G. Loukides

Informatics · King's College London

Grigorios Loukides

Associate Professor (Senior Lecturer) in Computer Science

Deputy Head of the Algorithms and Data Analysis Research Group

My research focuses on the design and analysis of algorithms for data mining, indexing, and privacy, with applications in biomedical informatics. My work has appeared in leading international journals and conferences, including PVLDB, The VLDB Journal, Algorithmica, ACM SIGKDD, IEEE ICDE, and IEEE ICDM. I have served on the PVLDB Review Board (2025–2026) and as an Associate Editor of IEEE Transactions on Information Forensics and Security. I previously held a Royal Academy of Engineering Research Fellowship (2011–2016).

Grigorios Loukides

Algorithms. Data. Discovery.
Department of Informatics
King's College London, UK

Research

From algorithmic foundations
to useful data analysis.

01 / ALGORITHMS & INDEXING

Making large data searchable

String algorithms, compact indexes, pattern matching, and graph problems. Recent work includes uncertain strings, string anchors, and subtree mode queries.

02 / DATA MINING

Discovering meaningful structure

Pattern discovery in strings and time series, dense subgraphs, and network analysis. Connecting efficient methods with applications in scientific and real-world data.

03 / PRIVACY & HEALTH

Learning while protecting people

Privacy-preserving data publishing, anonymization, and differential privacy, including methods for electronic health records and biomedical analysis.

Publication catalogue · 2006–2026

Publications

Download BibTeX ↓
2026

Contextual Pattern Mining and Counting

Ling Li, Daniel Gibney, Sharma V. Thankachan, Solon P. Pissis, Grigorios Loukides

ICDE 2026: 224-237

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdeLiGTPL26,
  title = {Contextual Pattern Mining and Counting},
  author = {Ling Li and Daniel Gibney and Sharma V. Thankachan and Solon P. Pissis and Grigorios Loukides},
  year = {2026},
  url = {https://dblp.org/rec/conf/icde/LiGTPL26},
  note = {ICDE 2026: 224-237}
}
2026

Fast Assessment of Eulerian Trails in Graphs with Applications

Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi

ACM Trans. Knowl. Discov. Data 20(1): 14:1-14:33 (2026)

Journal articleDBLP ↗
BibTeX
@article{journalstkddConteGLPPP26,
  title = {Fast Assessment of Eulerian Trails in Graphs with Applications},
  author = {Alessio Conte and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giulia Punzi},
  year = {2026},
  url = {https://dblp.org/rec/journals/tkdd/ConteGLPPP26},
  note = {ACM Trans. Knowl. Discov. Data 20(1): 14:1-14:33 (2026)}
}
2026

Minimizing the minimizers via alphabet reordering

Hilde Verbeek, Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

Theor. Comput. Sci. 1076: 115932 (2026)

Journal articleDBLP ↗
BibTeX
@article{journalstcsVerbeekALP26,
  title = {Minimizing the minimizers via alphabet reordering},
  author = {Hilde Verbeek and Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2026},
  url = {https://dblp.org/rec/journals/tcs/VerbeekALP26},
  note = {Theor. Comput. Sci. 1076: 115932 (2026)}
}
2026

On Strings Having the Same Length-k Substrings

Giulia Bernardini, Alessio Conte, Estéban Gabory, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Giulia Punzi, Michelle Sweering

Theory Comput. Syst. 70(2): 21 (2026)

Journal articleDBLP ↗
BibTeX
@article{journalsmstBernardiniCGGLPPS26,
  title = {On Strings Having the Same Length-k Substrings},
  author = {Giulia Bernardini and Alessio Conte and Estéban Gabory and Roberto Grossi and Grigorios Loukides and Solon P. Pissis and Giulia Punzi and Michelle Sweering},
  year = {2026},
  url = {https://dblp.org/rec/journals/mst/BernardiniCGGLPPS26},
  note = {Theory Comput. Syst. 70(2): 21 (2026)}
}
2026

Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis, Hilde Verbeek

Algorithmica 88(3): 44 (2026)

Journal articleDBLP ↗
BibTeX
@article{journalsalgorithmicaAyadLPV26,
  title = {Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis and Hilde Verbeek},
  year = {2026},
  url = {https://dblp.org/rec/journals/algorithmica/AyadLPV26},
  note = {Algorithmica 88(3): 44 (2026)}
}
2026

Subtree Mode and Applications

Jialong Zhou, Ben Bals, Matei Tinca, Ai Guan, Panagiotis Charalampopoulos, Grigorios Loukides, Solon P. Pissis

ICDE 2026: 3152-3167

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdeZhouBTGCLP26,
  title = {Subtree Mode and Applications},
  author = {Jialong Zhou and Ben Bals and Matei Tinca and Ai Guan and Panagiotis Charalampopoulos and Grigorios Loukides and Solon P. Pissis},
  year = {2026},
  url = {https://dblp.org/rec/conf/icde/ZhouBTGCLP26},
  note = {ICDE 2026: 3152-3167}
}
2026

ZigZag Trie: A Novel Index for Contextual Queries

Ling Li, Daniel Gibney, Sharma V. Thankachan, Rahul Shah, Grigorios Loukides, Solon P. Pissis

CoRR abs/2609.19914 (2026)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs260919914,
  title = {ZigZag Trie: A Novel Index for Contextual Queries},
  author = {Ling Li and Daniel Gibney and Sharma V. Thankachan and Rahul Shah and Grigorios Loukides and Solon P. Pissis},
  year = {2026},
  url = {https://dblp.org/rec/journals/corr/abs-2609-19914},
  note = {CoRR abs/2609.19914 (2026)}
}
2025

Heavy Nodes in a Small Neighborhood: Exact and Peeling Algorithms With Applications

Ling Li, Hilde Verbeek, Huiping Chen, Grigorios Loukides, Robert Gwadera, Leen Stougie, Solon P. Pissis

IEEE Trans. Knowl. Data Eng. 37(4): 1853-1870 (2025)

Journal articleDBLP ↗
BibTeX
@article{journalstkdeLiVCLGSP25,
  title = {Heavy Nodes in a Small Neighborhood: Exact and Peeling Algorithms With Applications},
  author = {Ling Li and Hilde Verbeek and Huiping Chen and Grigorios Loukides and Robert Gwadera and Leen Stougie and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/journals/tkde/LiVCLGSP25},
  note = {IEEE Trans. Knowl. Data Eng. 37(4): 1853-1870 (2025)}
}
2025

Indexing Strings with Utilities

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Veronica Guerrini, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis

ICDE 2025: 2782-2795

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdeBernardiniCCGGLPP25,
  title = {Indexing Strings with Utilities},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Veronica Guerrini and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/conf/icde/BernardiniCCGGLPP25},
  note = {ICDE 2025: 2782-2795}
}
2025

Missing value replacement in strings and applications

Giulia Bernardini, Chang Liu, Grigorios Loukides, Alberto Marchetti-Spaccamela, Solon P. Pissis, Leen Stougie, Michelle Sweering

Data Min. Knowl. Discov. 39(2): 12 (2025)

BibTeX
@article{journalsdatamineBernardiniLLMPSS25,
  title = {Missing value replacement in strings and applications},
  author = {Giulia Bernardini and Chang Liu and Grigorios Loukides and Alberto Marchetti-Spaccamela and Solon P. Pissis and Leen Stougie and Michelle Sweering},
  year = {2025},
  url = {https://doi.org/10.1007/s10618-024-01074-3},
  doi = {10.1007/s10618-024-01074-3},
  note = {Data Min. Knowl. Discov. 39(2): 12 (2025)}
}
2025

On String and Graph Sanitization

Giulia Bernardini, Huiping Chen, Grigorios Loukides, Solon P. Pissis

From Strings to Graphs, and Back Again 2025: 9:1-9:10

Conference paperDBLP ↗
BibTeX
@inproceedings{confbirthday0001CLP25,
  title = {On String and Graph Sanitization},
  author = {Giulia Bernardini and Huiping Chen and Grigorios Loukides and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/conf/birthday/0001CLP25},
  note = {From Strings to Graphs, and Back Again 2025: 9:1-9:10}
}
2025

Resilient Pattern Mining

Pengxin Bian, Panagiotis Charalampopoulos, Lorraine A. K. Ayad, Manal Mohamed, Solon P. Pissis, Grigorios Loukides

ICDM 2025: 81-89

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdmBianCAMPL25,
  title = {Resilient Pattern Mining},
  author = {Pengxin Bian and Panagiotis Charalampopoulos and Lorraine A. K. Ayad and Manal Mohamed and Solon P. Pissis and Grigorios Loukides},
  year = {2025},
  url = {https://dblp.org/rec/conf/icdm/BianCAMPL25},
  note = {ICDM 2025: 81-89}
}
2025

Text indexing for long patterns using locally consistent anchors

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

VLDB J. 34(5): 58 (2025)

Journal articleDBLP ↗
BibTeX
@article{journalsvldbAyadLP25,
  title = {Text indexing for long patterns using locally consistent anchors},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/journals/vldb/AyadLP25},
  note = {VLDB J. 34(5): 58 (2025)}
}
2025

U-Index: A Universal Indexing Framework for Matching Long Patterns

Lorraine A. K. Ayad, Gabriele Fici, Ragnar Groot Koerkamp, Grigorios Loukides, Rob Patro, Giulio Ermanno Pibiri, Solon P. Pissis

SEA 2025: 4:1-4:18

Conference paperDBLP ↗
BibTeX
@inproceedings{confweaAyadFKLPPP25,
  title = {U-Index: A Universal Indexing Framework for Matching Long Patterns},
  author = {Lorraine A. K. Ayad and Gabriele Fici and Ragnar Groot Koerkamp and Grigorios Loukides and Rob Patro and Giulio Ermanno Pibiri and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/conf/wea/AyadFKLPPP25},
  note = {SEA 2025: 4:1-4:18}
}
2025

Contextual Pattern Mining and Counting

Ling Li, Daniel Gibney, Sharma V. Thankachan, Solon P. Pissis, Grigorios Loukides

CoRR abs/2506.17613 (2025)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs250617613,
  title = {Contextual Pattern Mining and Counting},
  author = {Ling Li and Daniel Gibney and Sharma V. Thankachan and Solon P. Pissis and Grigorios Loukides},
  year = {2025},
  url = {https://dblp.org/rec/journals/corr/abs-2506-17613},
  note = {CoRR abs/2506.17613 (2025)}
}
2025

Indexing Strings with Utilities

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Veronica Guerrini, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis

CoRR abs/2504.05917 (2025)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs250405917,
  title = {Indexing Strings with Utilities},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Veronica Guerrini and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/journals/corr/abs-2504-05917},
  note = {CoRR abs/2504.05917 (2025)}
}
2025

Resilient Pattern Mining

Pengxin Bian, Panagiotis Charalampopoulos, Lorraine A. K. Ayad, Manal Mohamed, Solon P. Pissis, Grigorios Loukides

CoRR abs/2506.04935 (2025)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs250604935,
  title = {Resilient Pattern Mining},
  author = {Pengxin Bian and Panagiotis Charalampopoulos and Lorraine A. K. Ayad and Manal Mohamed and Solon P. Pissis and Grigorios Loukides},
  year = {2025},
  url = {https://dblp.org/rec/journals/corr/abs-2506-04935},
  note = {CoRR abs/2506.04935 (2025)}
}
2025

Subtree Mode and Applications

Jialong Zhou, Ben Bals, Matei Tinca, Ai Guan, Panagiotis Charalampopoulos, Grigorios Loukides, Solon P. Pissis

CoRR abs/2511.01376 (2025)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs251101376,
  title = {Subtree Mode and Applications},
  author = {Jialong Zhou and Ben Bals and Matei Tinca and Ai Guan and Panagiotis Charalampopoulos and Grigorios Loukides and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/journals/corr/abs-2511-01376},
  note = {CoRR abs/2511.01376 (2025)}
}
2025

U-index: A Universal Indexing Framework for Matching Long Patterns

Lorraine A. K. Ayad, Gabriele Fici, Ragnar Groot Koerkamp, Grigorios Loukides, Rob Patro, Giulio Ermanno Pibiri, Solon P. Pissis

CoRR abs/2502.14488 (2025)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs250214488,
  title = {U-index: A Universal Indexing Framework for Matching Long Patterns},
  author = {Lorraine A. K. Ayad and Gabriele Fici and Ragnar Groot Koerkamp and Grigorios Loukides and Rob Patro and Giulio Ermanno Pibiri and Solon P. Pissis},
  year = {2025},
  url = {https://dblp.org/rec/journals/corr/abs-2502-14488},
  note = {CoRR abs/2502.14488 (2025)}
}
2024

Approximate Suffix-Prefix Dictionary Queries

Wiktor Zuba, Grigorios Loukides, Solon P. Pissis, Sharma V. Thankachan

MFCS 2024: 85:1-85:18

Conference paperDBLP ↗
BibTeX
@inproceedings{confmfcsZubaLPT24,
  title = {Approximate Suffix-Prefix Dictionary Queries},
  author = {Wiktor Zuba and Grigorios Loukides and Solon P. Pissis and Sharma V. Thankachan},
  year = {2024},
  url = {https://dblp.org/rec/conf/mfcs/ZubaLPT24},
  note = {MFCS 2024: 85:1-85:18}
}
2024

Connecting de Bruijn Graphs

Giulia Bernardini, Huiping Chen, Inge Li Gørtz, Christoffer Krogh, Grigorios Loukides, Solon P. Pissis, Leen Stougie, Michelle Sweering

CPM 2024: 6:1-6:16

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpm0001CGKLPSS24,
  title = {Connecting de Bruijn Graphs},
  author = {Giulia Bernardini and Huiping Chen and Inge Li Gørtz and Christoffer Krogh and Grigorios Loukides and Solon P. Pissis and Leen Stougie and Michelle Sweering},
  year = {2024},
  url = {https://dblp.org/rec/conf/cpm/0001CGKLPSS24},
  note = {CPM 2024: 6:1-6:16}
}
2024

Ego-Network Segmentation via (Weighted) Jaccard Median

Haodi Zhong, Grigorios Loukides, Alessio Conte, Solon P. Pissis

IEEE Trans. Knowl. Data Eng. 36(9): 4646-4663 (2024)

Journal articleDBLP ↗
BibTeX
@article{journalstkdeZhongLCP24,
  title = {Ego-Network Segmentation via (Weighted) Jaccard Median},
  author = {Haodi Zhong and Grigorios Loukides and Alessio Conte and Solon P. Pissis},
  year = {2024},
  url = {https://dblp.org/rec/journals/tkde/ZhongLCP24},
  note = {IEEE Trans. Knowl. Data Eng. 36(9): 4646-4663 (2024)}
}
2024

Minimizing the Minimizers via Alphabet Reordering

Hilde Verbeek, Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

CPM 2024: 28:1-28:13

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpm0001ALP24,
  title = {Minimizing the Minimizers via Alphabet Reordering},
  author = {Hilde Verbeek and Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2024},
  url = {https://dblp.org/rec/conf/cpm/0001ALP24},
  note = {CPM 2024: 28:1-28:13}
}
2024

On Breaking Truss-based and Core-based Communities

Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Michelle Sweering

ACM Trans. Knowl. Discov. Data 18(6): 135:1-135:43 (2024)

Journal articleDBLP ↗
BibTeX
@article{journalstkddChenCGLPS24,
  title = {On Breaking Truss-based and Core-based Communities},
  author = {Huiping Chen and Alessio Conte and Roberto Grossi and Grigorios Loukides and Solon P. Pissis and Michelle Sweering},
  year = {2024},
  url = {https://dblp.org/rec/journals/tkdd/ChenCGLPS24},
  note = {ACM Trans. Knowl. Discov. Data 18(6): 135:1-135:43 (2024)}
}
2024

Pattern Masking for Dictionary Matching: Theory and Practice

Panagiotis Charalampopoulos, Huiping Chen, Peter Christen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Jakub Radoszewski

Algorithmica 86(6): 1948-1978 (2024)

Journal articleDBLP ↗
BibTeX
@article{journalsalgorithmicaCharalampopoulosCCLPPR24,
  title = {Pattern Masking for Dictionary Matching: Theory and Practice},
  author = {Panagiotis Charalampopoulos and Huiping Chen and Peter Christen and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Jakub Radoszewski},
  year = {2024},
  url = {https://dblp.org/rec/journals/algorithmica/CharalampopoulosCCLPPR24},
  note = {Algorithmica 86(6): 1948-1978 (2024)}
}
2024

Scalable Order-Preserving Pattern Mining

Ling Li, Wiktor Zuba, Grigorios Loukides, Solon P. Pissis, Maria Matsangidou

ICDM 2024: 211-220

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdm0012ZLPM24,
  title = {Scalable Order-Preserving Pattern Mining},
  author = {Ling Li and Wiktor Zuba and Grigorios Loukides and Solon P. Pissis and Maria Matsangidou},
  year = {2024},
  url = {https://dblp.org/rec/conf/icdm/0012ZLPM24},
  note = {ICDM 2024: 211-220}
}
2024

Space-Efficient Indexes for Uncertain Strings

Estéban Gabory, Chang Liu, Grigorios Loukides, Solon P. Pissis, Wiktor Zuba

ICDE 2024: 4828-4842

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdeGabory0LPZ24,
  title = {Space-Efficient Indexes for Uncertain Strings},
  author = {Estéban Gabory and Chang Liu and Grigorios Loukides and Solon P. Pissis and Wiktor Zuba},
  year = {2024},
  url = {https://dblp.org/rec/conf/icde/Gabory0LPZ24},
  note = {ICDE 2024: 4828-4842}
}
2024

Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis, Hilde Verbeek

LATIN (1) 2024: 162-177

Conference paperDBLP ↗
BibTeX
@inproceedings{conflatinAyadLPV24,
  title = {Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis and Hilde Verbeek},
  year = {2024},
  url = {https://dblp.org/rec/conf/latin/AyadLPV24},
  note = {LATIN (1) 2024: 162-177}
}
2024

Utility-Oriented String Mining

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Veronica Guerrini, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis

SDM 2024: 190-198

Conference paperDBLP ↗
BibTeX
@inproceedings{confsdm0001CCGGLPP24,
  title = {Utility-Oriented String Mining},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Veronica Guerrini and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis},
  year = {2024},
  url = {https://dblp.org/rec/conf/sdm/0001CCGGLPP24},
  note = {SDM 2024: 190-198}
}
2024

Minimizing the Minimizers via Alphabet Reordering

Hilde Verbeek, Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

CoRR abs/2405.04052 (2024)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs240504052,
  title = {Minimizing the Minimizers via Alphabet Reordering},
  author = {Hilde Verbeek and Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2024},
  url = {https://dblp.org/rec/journals/corr/abs-2405-04052},
  note = {CoRR abs/2405.04052 (2024)}
}
2024

Scalable Order-Preserving Pattern Mining

Ling Li, Wiktor Zuba, Grigorios Loukides, Solon P. Pissis, Maria Matsangidou

CoRR abs/2411.19511 (2024)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs241119511,
  title = {Scalable Order-Preserving Pattern Mining},
  author = {Ling Li and Wiktor Zuba and Grigorios Loukides and Solon P. Pissis and Maria Matsangidou},
  year = {2024},
  url = {https://dblp.org/rec/journals/corr/abs-2411-19511},
  note = {CoRR abs/2411.19511 (2024)}
}
2024

Space-Efficient Indexes for Uncertain Strings

Estéban Gabory, Chang Liu, Grigorios Loukides, Solon P. Pissis, Wiktor Zuba

CoRR abs/2403.14256 (2024)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs240314256,
  title = {Space-Efficient Indexes for Uncertain Strings},
  author = {Estéban Gabory and Chang Liu and Grigorios Loukides and Solon P. Pissis and Wiktor Zuba},
  year = {2024},
  url = {https://dblp.org/rec/journals/corr/abs-2403-14256},
  note = {CoRR abs/2403.14256 (2024)}
}
2024

Text Indexing for Long Patterns using Locally Consistent Anchors

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

CoRR abs/2407.11819 (2024)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs240711819,
  title = {Text Indexing for Long Patterns using Locally Consistent Anchors},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2024},
  url = {https://dblp.org/rec/journals/corr/abs-2407-11819},
  note = {CoRR abs/2407.11819 (2024)}
}
2023

Bidirectional String Anchors for Improved Text Indexing and Top-K Similarity Search

Grigorios Loukides, Solon P. Pissis, Michelle Sweering

IEEE Trans. Knowl. Data Eng. 35(11): 11093-11111 (2023)

Journal articleDBLP ↗
BibTeX
@article{journalstkdeLoukidesPS23,
  title = {Bidirectional String Anchors for Improved Text Indexing and Top-K Similarity Search},
  author = {Grigorios Loukides and Solon P. Pissis and Michelle Sweering},
  year = {2023},
  url = {https://dblp.org/rec/journals/tkde/LoukidesPS23},
  note = {IEEE Trans. Knowl. Data Eng. 35(11): 11093-11111 (2023)}
}
2023

Frequency-Constrained Substring Complexity

Solon P. Pissis, Michael Shekelyan, Chang Liu, Grigorios Loukides

SPIRE 2023: 345-352

Conference paperDBLP ↗
BibTeX
@inproceedings{confspirePissisSLL23,
  title = {Frequency-Constrained Substring Complexity},
  author = {Solon P. Pissis and Michael Shekelyan and Chang Liu and Grigorios Loukides},
  year = {2023},
  url = {https://dblp.org/rec/conf/spire/PissisSLL23},
  note = {SPIRE 2023: 345-352}
}
2023

Heavy Nodes in a Small Neighborhood: Algorithms and Applications

Huiping Chen, Grigorios Loukides, Robert Gwadera, Solon P. Pissis

SDM 2023: 307-315

Conference paperDBLP ↗
BibTeX
@inproceedings{confsdmChenLGP23,
  title = {Heavy Nodes in a Small Neighborhood: Algorithms and Applications},
  author = {Huiping Chen and Grigorios Loukides and Robert Gwadera and Solon P. Pissis},
  year = {2023},
  url = {https://dblp.org/rec/conf/sdm/ChenLGP23},
  note = {SDM 2023: 307-315}
}
2023

Hide and Mine in Strings: Hardness, Algorithms, and Experiments

Giulia Bernardini, Alessio Conte, Garance Gourdel, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi, Leen Stougie, Michelle Sweering

IEEE Trans. Knowl. Data Eng. 35(6): 5948-5963 (2023)

Journal articleDBLP ↗
BibTeX
@article{journalstkdeBernardiniCGGLPPPSS23,
  title = {Hide and Mine in Strings: Hardness, Algorithms, and Experiments},
  author = {Giulia Bernardini and Alessio Conte and Garance Gourdel and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giulia Punzi and Leen Stougie and Michelle Sweering},
  year = {2023},
  url = {https://dblp.org/rec/journals/tkde/BernardiniCGGLPPPSS23},
  note = {IEEE Trans. Knowl. Data Eng. 35(6): 5948-5963 (2023)}
}
2023

Suffix-Prefix Queries on a Dictionary

Grigorios Loukides, Solon P. Pissis, Sharma V. Thankachan, Wiktor Zuba

CPM 2023: 21:1-21:20

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpmLoukidesPTZ23,
  title = {Suffix-Prefix Queries on a Dictionary},
  author = {Grigorios Loukides and Solon P. Pissis and Sharma V. Thankachan and Wiktor Zuba},
  year = {2023},
  url = {https://dblp.org/rec/conf/cpm/LoukidesPTZ23},
  note = {CPM 2023: 21:1-21:20}
}
2023

Text Indexing for Long Patterns: Anchors are All you Need

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis

Proc. VLDB Endow. 16(9): 2117-2131 (2023)

Journal articleDBLP ↗
BibTeX
@article{journalspvldbAyadLP23,
  title = {Text Indexing for Long Patterns: Anchors are All you Need},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis},
  year = {2023},
  url = {https://dblp.org/rec/journals/pvldb/AyadLP23},
  note = {Proc. VLDB Endow. 16(9): 2117-2131 (2023)}
}
2023

Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast

Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis, Hilde Verbeek

CoRR abs/2310.09023 (2023)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs231009023,
  title = {Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast},
  author = {Lorraine A. K. Ayad and Grigorios Loukides and Solon P. Pissis and Hilde Verbeek},
  year = {2023},
  url = {https://dblp.org/rec/journals/corr/abs-2310-09023},
  note = {CoRR abs/2310.09023 (2023)}
}
2022

All-pairs suffix/prefix in optimal time using Aho-Corasick space

Grigorios Loukides, Solon P. Pissis

Inf. Process. Lett. 178: 106275 (2022)

Journal articleDBLP ↗
BibTeX
@article{journalsiplLoukidesP22,
  title = {All-pairs suffix/prefix in optimal time using Aho-Corasick space},
  author = {Grigorios Loukides and Solon P. Pissis},
  year = {2022},
  url = {https://dblp.org/rec/journals/ipl/LoukidesP22},
  note = {Inf. Process. Lett. 178: 106275 (2022)}
}
2022

Clustering Demographics and Sequences of Diagnosis Codes

Haodi Zhong, Grigorios Loukides, Solon P. Pissis

IEEE J. Biomed. Health Informatics 26(5): 2351-2359 (2022)

BibTeX
@article{journalstitbZhongLP22,
  title = {Clustering Demographics and Sequences of Diagnosis Codes},
  author = {Haodi Zhong and Grigorios Loukides and Solon P. Pissis},
  year = {2022},
  url = {https://doi.org/10.1109/JBHI.2021.3129461},
  doi = {10.1109/JBHI.2021.3129461},
  note = {IEEE J. Biomed. Health Informatics 26(5): 2351-2359 (2022)}
}
2022

Clustering sequence graphs

Haodi Zhong, Grigorios Loukides, Solon P. Pissis

Data Knowl. Eng. 138: 101981 (2022)

Journal articleDBLP ↗
BibTeX
@article{journalsdkeZhongLP22,
  title = {Clustering sequence graphs},
  author = {Haodi Zhong and Grigorios Loukides and Solon P. Pissis},
  year = {2022},
  url = {https://dblp.org/rec/journals/dke/ZhongLP22},
  note = {Data Knowl. Eng. 138: 101981 (2022)}
}
2022

Jaccard Median for Ego-network Segmentation

Haodi Zhong, Grigorios Loukides, Alessio Conte, Solon P. Pissis

ICDM 2022: 1353-1358

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdmZhongLCP22,
  title = {Jaccard Median for Ego-network Segmentation},
  author = {Haodi Zhong and Grigorios Loukides and Alessio Conte and Solon P. Pissis},
  year = {2022},
  url = {https://dblp.org/rec/conf/icdm/ZhongLCP22},
  note = {ICDM 2022: 1353-1358}
}
2022

Making de Bruijn Graphs Eulerian

Giulia Bernardini, Huiping Chen, Grigorios Loukides, Solon P. Pissis, Leen Stougie, Michelle Sweering

CPM 2022: 12:1-12:18

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpm0001CLPSS22,
  title = {Making de Bruijn Graphs Eulerian},
  author = {Giulia Bernardini and Huiping Chen and Grigorios Loukides and Solon P. Pissis and Leen Stougie and Michelle Sweering},
  year = {2022},
  url = {https://dblp.org/rec/conf/cpm/0001CLPSS22},
  note = {CPM 2022: 12:1-12:18}
}
2022

On Strings Having the Same Length- k Substrings

Giulia Bernardini, Alessio Conte, Estéban Gabory, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Giulia Punzi, Michelle Sweering

CPM 2022: 16:1-16:17

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpm0001CGGLPPS22,
  title = {On Strings Having the Same Length- k Substrings},
  author = {Giulia Bernardini and Alessio Conte and Estéban Gabory and Roberto Grossi and Grigorios Loukides and Solon P. Pissis and Giulia Punzi and Michelle Sweering},
  year = {2022},
  url = {https://dblp.org/rec/conf/cpm/0001CGGLPPS22},
  note = {CPM 2022: 16:1-16:17}
}
2022

Differentially Private Top-k Selection via Canonical Lipschitz Mechanism

Michael Shekelyan, Grigorios Loukides

CoRR abs/2201.13376 (2022)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs220113376,
  title = {Differentially Private Top-k Selection via Canonical Lipschitz Mechanism},
  author = {Michael Shekelyan and Grigorios Loukides},
  year = {2022},
  url = {https://dblp.org/rec/journals/corr/abs-2201-13376},
  note = {CoRR abs/2201.13376 (2022)}
}
2021

Beyond the BEST Theorem: Fast Assessment of Eulerian Trails

Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi

FCT 2021: 162-175

Conference paperDBLP ↗
BibTeX
@inproceedings{conffctConteGLPPP21,
  title = {Beyond the BEST Theorem: Fast Assessment of Eulerian Trails},
  author = {Alessio Conte and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giulia Punzi},
  year = {2021},
  url = {https://dblp.org/rec/conf/fct/ConteGLPPP21},
  note = {FCT 2021: 162-175}
}
2021

Bidirectional String Anchors: A New String Sampling Mechanism

Grigorios Loukides, Solon P. Pissis

ESA 2021: 64:1-64:21

Conference paperDBLP ↗
BibTeX
@inproceedings{confesaLoukidesP21,
  title = {Bidirectional String Anchors: A New String Sampling Mechanism},
  author = {Grigorios Loukides and Solon P. Pissis},
  year = {2021},
  url = {https://dblp.org/rec/conf/esa/LoukidesP21},
  note = {ESA 2021: 64:1-64:21}
}
2021

Combinatorial Algorithms for String Sanitization

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone, Michelle Sweering

ACM Trans. Knowl. Discov. Data 15(1): 8:1-8:34 (2021)

Journal articleDBLP ↗
BibTeX
@article{journalstkddBernardiniCCGLP21,
  title = {Combinatorial Algorithms for String Sanitization},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giovanna Rosone and Michelle Sweering},
  year = {2021},
  url = {https://dblp.org/rec/journals/tkdd/BernardiniCCGLP21},
  note = {ACM Trans. Knowl. Discov. Data 15(1): 8:1-8:34 (2021)}
}
2021

Differentially Private String Sanitization for Frequency-Based Mining Tasks

Huiping Chen, Changyu Dong, Liyue Fan, Grigorios Loukides, Solon P. Pissis, Leen Stougie

ICDM 2021: 41-50

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdmChenDFLPS21,
  title = {Differentially Private String Sanitization for Frequency-Based Mining Tasks},
  author = {Huiping Chen and Changyu Dong and Liyue Fan and Grigorios Loukides and Solon P. Pissis and Leen Stougie},
  year = {2021},
  url = {https://dblp.org/rec/conf/icdm/ChenDFLPS21},
  note = {ICDM 2021: 41-50}
}
2021

How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free

Changhui Hu, Jin Li, Zheli Liu, Xiaojie Guo, Yu Wei, Xuan Guang, Grigorios Loukides, Changyu Dong

USENIX Security Symposium 2021: 965-982

Conference paperDBLP ↗
BibTeX
@inproceedings{confussHu0LGWGLD21,
  title = {How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free},
  author = {Changhui Hu and Jin Li and Zheli Liu and Xiaojie Guo and Yu Wei and Xuan Guang and Grigorios Loukides and Changyu Dong},
  year = {2021},
  url = {https://dblp.org/rec/conf/uss/Hu0LGWGLD21},
  note = {USENIX Security Symposium 2021: 965-982}
}
2021

Influence maximization in the presence of vulnerable nodes: A ratio perspective

Huiping Chen, Grigorios Loukides, Solon P. Pissis, Hau Chan

Theor. Comput. Sci. 852: 84-103 (2021)

Journal articleDBLP ↗
BibTeX
@article{journalstcsChenLPC21,
  title = {Influence maximization in the presence of vulnerable nodes: A ratio perspective},
  author = {Huiping Chen and Grigorios Loukides and Solon P. Pissis and Hau Chan},
  year = {2021},
  url = {https://dblp.org/rec/journals/tcs/ChenLPC21},
  note = {Theor. Comput. Sci. 852: 84-103 (2021)}
}
2021

Maximizing Approximately k-Submodular Functions

Leqian Zheng, Hau Chan, Grigorios Loukides, Minming Li

SDM 2021: 414-422

Conference paperDBLP ↗
BibTeX
@inproceedings{confsdmZhengCLL21,
  title = {Maximizing Approximately k-Submodular Functions},
  author = {Leqian Zheng and Hau Chan and Grigorios Loukides and Minming Li},
  year = {2021},
  url = {https://dblp.org/rec/conf/sdm/ZhengCLL21},
  note = {SDM 2021: 414-422}
}
2021

On Breaking Truss-Based Communities

Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Michelle Sweering

KDD 2021: 117-126

Conference paperDBLP ↗
BibTeX
@inproceedings{confkddChenCGLPS21,
  title = {On Breaking Truss-Based Communities},
  author = {Huiping Chen and Alessio Conte and Roberto Grossi and Grigorios Loukides and Solon P. Pissis and Michelle Sweering},
  year = {2021},
  url = {https://dblp.org/rec/conf/kdd/ChenCGLPS21},
  note = {KDD 2021: 117-126}
}
2021

Pattern Masking for Dictionary Matching

Panagiotis Charalampopoulos, Huiping Chen, Peter Christen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Jakub Radoszewski

ISAAC 2021: 65:1-65:19

Conference paperDBLP ↗
BibTeX
@inproceedings{confisaacCharalampopoulos21,
  title = {Pattern Masking for Dictionary Matching},
  author = {Panagiotis Charalampopoulos and Huiping Chen and Peter Christen and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Jakub Radoszewski},
  year = {2021},
  url = {https://dblp.org/rec/conf/isaac/Charalampopoulos21},
  note = {ISAAC 2021: 65:1-65:19}
}
2021

Reverse-Safe Text Indexing

Giulia Bernardini, Huiping Chen, Gabriele Fici, Grigorios Loukides, Solon P. Pissis

ACM J. Exp. Algorithmics 26: 1.10:1-1.10:26 (2021)

Journal articleDBLP ↗
BibTeX
@article{journalsjeaBernardiniCFLP21,
  title = {Reverse-Safe Text Indexing},
  author = {Giulia Bernardini and Huiping Chen and Gabriele Fici and Grigorios Loukides and Solon P. Pissis},
  year = {2021},
  url = {https://dblp.org/rec/journals/jea/BernardiniCFLP21},
  note = {ACM J. Exp. Algorithmics 26: 1.10:1-1.10:26 (2021)}
}
2021

Maximizing approximately k-submodular functions

Leqian Zheng, Hau Chan, Grigorios Loukides, Minming Li

CoRR abs/2101.07157 (2021)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs210107157,
  title = {Maximizing approximately k-submodular functions},
  author = {Leqian Zheng and Hau Chan and Grigorios Loukides and Minming Li},
  year = {2021},
  url = {https://dblp.org/rec/journals/corr/abs-2101-07157},
  note = {CoRR abs/2101.07157 (2021)}
}
2021

String Sampling with Bidirectional String Anchors

Grigorios Loukides, Solon P. Pissis, Michelle Sweering

CoRR abs/2112.10376 (2021)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs211210376,
  title = {String Sampling with Bidirectional String Anchors},
  author = {Grigorios Loukides and Solon P. Pissis and Michelle Sweering},
  year = {2021},
  url = {https://dblp.org/rec/journals/corr/abs-2112-10376},
  note = {CoRR abs/2112.10376 (2021)}
}
2020

Algorithms for Optimizing the Ratio of Monotone k-Submodular Functions

Hau Chan, Grigorios Loukides, Zhenghui Su

ECML/PKDD (3) 2020: 3-19

Conference paperDBLP ↗
BibTeX
@inproceedings{confpkddChanLS20,
  title = {Algorithms for Optimizing the Ratio of Monotone k-Submodular Functions},
  author = {Hau Chan and Grigorios Loukides and Zhenghui Su},
  year = {2020},
  url = {https://dblp.org/rec/conf/pkdd/ChanLS20},
  note = {ECML/PKDD (3) 2020: 3-19}
}
2020

Clustering datasets with demographics and diagnosis codes

Haodi Zhong, Grigorios Loukides, Robert Gwadera

J. Biomed. Informatics 102: 103360 (2020)

BibTeX
@article{journalsjbiZhongLG20,
  title = {Clustering datasets with demographics and diagnosis codes},
  author = {Haodi Zhong and Grigorios Loukides and Robert Gwadera},
  year = {2020},
  url = {https://doi.org/10.1016/j.jbi.2019.103360},
  doi = {10.1016/j.jbi.2019.103360},
  note = {J. Biomed. Informatics 102: 103360 (2020)}
}
2020

Efficiently Detecting Web Spambots in a Temporally Annotated Sequence

Hayam Alamro, Costas S. Iliopoulos, Grigorios Loukides

AINA 2020: 1007-1019

Conference paperDBLP ↗
BibTeX
@inproceedings{confainaAlamroIL20,
  title = {Efficiently Detecting Web Spambots in a Temporally Annotated Sequence},
  author = {Hayam Alamro and Costas S. Iliopoulos and Grigorios Loukides},
  year = {2020},
  url = {https://dblp.org/rec/conf/aina/AlamroIL20},
  note = {AINA 2020: 1007-1019}
}
2020

Hide and Mine in Strings: Hardness and Algorithms

Giulia Bernardini, Alessio Conte, Garance Gourdel, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi, Leen Stougie, Michelle Sweering

ICDM 2020: 924-929

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdm0001CGGLPPPSS20,
  title = {Hide and Mine in Strings: Hardness and Algorithms},
  author = {Giulia Bernardini and Alessio Conte and Garance Gourdel and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giulia Punzi and Leen Stougie and Michelle Sweering},
  year = {2020},
  url = {https://dblp.org/rec/conf/icdm/0001CGGLPPPSS20},
  note = {ICDM 2020: 924-929}
}
2020

Location histogram privacy by Sensitive Location Hiding and Target Histogram Avoidance/Resemblance

Grigorios Loukides, George Theodorakopoulos

Knowl. Inf. Syst. 62(7): 2613-2651 (2020)

Journal articleDBLP ↗
BibTeX
@article{journalskaisLoukidesT20,
  title = {Location histogram privacy by Sensitive Location Hiding and Target Histogram Avoidance/Resemblance},
  author = {Grigorios Loukides and George Theodorakopoulos},
  year = {2020},
  url = {https://dblp.org/rec/journals/kais/LoukidesT20},
  note = {Knowl. Inf. Syst. 62(7): 2613-2651 (2020)}
}
2020

Overexposure-Aware Influence Maximization

Grigorios Loukides, Robert Gwadera, Shing-Wan Chang

ACM Trans. Internet Techn. 20(4): 39:1-39:31 (2020)

Journal articleDBLP ↗
BibTeX
@article{journalstoitLoukidesGC20,
  title = {Overexposure-Aware Influence Maximization},
  author = {Grigorios Loukides and Robert Gwadera and Shing-Wan Chang},
  year = {2020},
  url = {https://dblp.org/rec/journals/toit/LoukidesGC20},
  note = {ACM Trans. Internet Techn. 20(4): 39:1-39:31 (2020)}
}
2020

Reverse-Safe Data Structures for Text Indexing

Giulia Bernardini, Huiping Chen, Gabriele Fici, Grigorios Loukides, Solon P. Pissis

ALENEX 2020: 199-213

Conference paperDBLP ↗
BibTeX
@inproceedings{confalenex0001CFLP20,
  title = {Reverse-Safe Data Structures for Text Indexing},
  author = {Giulia Bernardini and Huiping Chen and Gabriele Fici and Grigorios Loukides and Solon P. Pissis},
  year = {2020},
  url = {https://dblp.org/rec/conf/alenex/0001CFLP20},
  note = {ALENEX 2020: 199-213}
}
2020

String Sanitization Under Edit Distance

Giulia Bernardini, Huiping Chen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Leen Stougie, Michelle Sweering

CPM 2020: 7:1-7:14

Conference paperDBLP ↗
BibTeX
@inproceedings{confcpm0001CLPPSS20,
  title = {String Sanitization Under Edit Distance},
  author = {Giulia Bernardini and Huiping Chen and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Leen Stougie and Michelle Sweering},
  year = {2020},
  url = {https://dblp.org/rec/conf/cpm/0001CLPPSS20},
  note = {CPM 2020: 7:1-7:14}
}
2020

How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free

Changhui Hu, Jin Li, Zheli Liu, Xiaojie Guo, Yu Wei, Xuan Guang, Grigorios Loukides, Changyu Dong

IACR Cryptol. ePrint Arch. 2020: 1576 (2020)

PreprintDBLP ↗
BibTeX
@misc{journalsiacrHuLLGWGLD20,
  title = {How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free},
  author = {Changhui Hu and Jin Li and Zheli Liu and Xiaojie Guo and Yu Wei and Xuan Guang and Grigorios Loukides and Changyu Dong},
  year = {2020},
  url = {https://dblp.org/rec/journals/iacr/HuLLGWGLD20},
  note = {IACR Cryptol. ePrint Arch. 2020: 1576 (2020)}
}
2020

Pattern Masking for Dictionary Matching

Panagiotis Charalampopoulos, Huiping Chen, Peter Christen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Jakub Radoszewski

CoRR abs/2006.16137 (2020)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs200616137,
  title = {Pattern Masking for Dictionary Matching},
  author = {Panagiotis Charalampopoulos and Huiping Chen and Peter Christen and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Jakub Radoszewski},
  year = {2020},
  url = {https://dblp.org/rec/journals/corr/abs-2006-16137},
  note = {CoRR abs/2006.16137 (2020)}
}
2019

Limiting the Influence to Vulnerable Users in Social Networks: A Ratio Perspective

Huiping Chen, Grigorios Loukides, Jiashi Fan, Hau Chan

AINA 2019: 1106-1122

Conference paperDBLP ↗
BibTeX
@inproceedings{confainaChenLFC19,
  title = {Limiting the Influence to Vulnerable Users in Social Networks: A Ratio Perspective},
  author = {Huiping Chen and Grigorios Loukides and Jiashi Fan and Hau Chan},
  year = {2019},
  url = {https://dblp.org/rec/conf/aina/ChenLFC19},
  note = {AINA 2019: 1106-1122}
}
2019

String Sanitization: A Combinatorial Approach

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone

ECML/PKDD (1) 2019: 627-644

Conference paperDBLP ↗
BibTeX
@inproceedings{confpkdd0001CCGLPPR19,
  title = {String Sanitization: A Combinatorial Approach},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giovanna Rosone},
  year = {2019},
  url = {https://dblp.org/rec/conf/pkdd/0001CCGLPPR19},
  note = {ECML/PKDD (1) 2019: 627-644}
}
2019

Location histogram privacy by sensitive location hiding and target histogram avoidance/resemblance (extended version)

Grigorios Loukides, George Theodorakopoulos

CoRR abs/1912.00055 (2019)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs191200055,
  title = {Location histogram privacy by sensitive location hiding and target histogram avoidance/resemblance (extended version)},
  author = {Grigorios Loukides and George Theodorakopoulos},
  year = {2019},
  url = {https://dblp.org/rec/journals/corr/abs-1912-00055},
  note = {CoRR abs/1912.00055 (2019)}
}
2019

String Sanitization: A Combinatorial Approach

Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone

CoRR abs/1906.11030 (2019)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs190611030,
  title = {String Sanitization: A Combinatorial Approach},
  author = {Giulia Bernardini and Huiping Chen and Alessio Conte and Roberto Grossi and Grigorios Loukides and Nadia Pisanti and Solon P. Pissis and Giovanna Rosone},
  year = {2019},
  url = {https://dblp.org/rec/journals/corr/abs-1906-11030},
  note = {CoRR abs/1906.11030 (2019)}
}
2018

Preventing the diffusion of information to vulnerable users while preserving PageRank

Grigorios Loukides, Robert Gwadera

Int. J. Data Sci. Anal. 5(1): 19-39 (2018)

Journal articleDBLP ↗
BibTeX
@article{journalsijdsaLoukidesG18,
  title = {Preventing the diffusion of information to vulnerable users while preserving PageRank},
  author = {Grigorios Loukides and Robert Gwadera},
  year = {2018},
  url = {https://dblp.org/rec/journals/ijdsa/LoukidesG18},
  note = {Int. J. Data Sci. Anal. 5(1): 19-39 (2018)}
}
2018

Towards String Sanitization

Oluwole I. Ajala, Hayam Alamro, Costas S. Iliopoulos, Grigorios Loukides

AIAI (Workshops) 2018: 200-210

Conference paperDBLP ↗
BibTeX
@inproceedings{confifip12AjalaAIL18,
  title = {Towards String Sanitization},
  author = {Oluwole I. Ajala and Hayam Alamro and Costas S. Iliopoulos and Grigorios Loukides},
  year = {2018},
  url = {https://dblp.org/rec/conf/ifip12/AjalaAIL18},
  note = {AIAI (Workshops) 2018: 200-210}
}
2018

Approximating Private Set Union/Intersection Cardinality with Logarithmic Complexity

Changyu Dong, Grigorios Loukides

IACR Cryptol. ePrint Arch. 2018: 495 (2018)

PreprintDBLP ↗
BibTeX
@misc{journalsiacrDongL18,
  title = {Approximating Private Set Union/Intersection Cardinality with Logarithmic Complexity},
  author = {Changyu Dong and Grigorios Loukides},
  year = {2018},
  url = {https://dblp.org/rec/journals/iacr/DongL18},
  note = {IACR Cryptol. ePrint Arch. 2018: 495 (2018)}
}
2017

Anonymizing datasets with demographics and diagnosis codes in the presence of utility constraints

Giorgos Poulis, Grigorios Loukides, Spiros Skiadopoulos, Aris Gkoulalas-Divanis

J. Biomed. Informatics 65: 76-96 (2017)

BibTeX
@article{journalsjbiPoulisLSG17,
  title = {Anonymizing datasets with demographics and diagnosis codes in the presence of utility constraints},
  author = {Giorgos Poulis and Grigorios Loukides and Spiros Skiadopoulos and Aris Gkoulalas-Divanis},
  year = {2017},
  url = {https://doi.org/10.1016/j.jbi.2016.11.001},
  doi = {10.1016/j.jbi.2016.11.001},
  note = {J. Biomed. Informatics 65: 76-96 (2017)}
}
2017

Approximating Private Set Union/Intersection Cardinality With Logarithmic Complexity

Changyu Dong, Grigorios Loukides

IEEE Trans. Inf. Forensics Secur. 12(11): 2792-2806 (2017)

BibTeX
@article{journalstifsDongL17,
  title = {Approximating Private Set Union/Intersection Cardinality With Logarithmic Complexity},
  author = {Changyu Dong and Grigorios Loukides},
  year = {2017},
  url = {https://dblp.org/rec/journals/tifs/DongL17},
  note = {IEEE Trans. Inf. Forensics Secur. 12(11): 2792-2806 (2017)}
}
2017

Cost-Effective Viral Marketing in the Latency Aware Independent Cascade Model

Robert Gwadera, Grigorios Loukides

PAKDD (1) 2017: 251-265

Conference paperDBLP ↗
BibTeX
@inproceedings{confpakddGwaderaL17,
  title = {Cost-Effective Viral Marketing in the Latency Aware Independent Cascade Model},
  author = {Robert Gwadera and Grigorios Loukides},
  year = {2017},
  url = {https://dblp.org/rec/conf/pakdd/GwaderaL17},
  note = {PAKDD (1) 2017: 251-265}
}
2015

A Parallel Method for Scalable Anonymization of Transaction Data

Neelam Memon, Grigorios Loukides, Jianhua Shao

ISPDC 2015: 235-241

Conference paperDBLP ↗
BibTeX
@inproceedings{confispdcMemonLS15,
  title = {A Parallel Method for Scalable Anonymization of Transaction Data},
  author = {Neelam Memon and Grigorios Loukides and Jianhua Shao},
  year = {2015},
  url = {https://dblp.org/rec/conf/ispdc/MemonLS15},
  note = {ISPDC 2015: 235-241}
}
2015

A Survey of Anonymization Algorithms for Electronic Health Records

Aris Gkoulalas-Divanis, Grigorios Loukides

Medical Data Privacy Handbook 2015: 17-34

Book / chapterDBLP ↗
BibTeX
@misc{bookssp15GkoulalasDivanisL15a,
  title = {A Survey of Anonymization Algorithms for Electronic Health Records},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/15/Gkoulalas-DivanisL15a},
  note = {Medical Data Privacy Handbook 2015: 17-34}
}
2015

Epilogue

Aris Gkoulalas-Divanis, Grigorios Loukides

Medical Data Privacy Handbook 2015: 765-773

Book / chapterDBLP ↗
BibTeX
@misc{bookssp15GkoulalasDivanisL15b,
  title = {Epilogue},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/15/Gkoulalas-DivanisL15b},
  note = {Medical Data Privacy Handbook 2015: 765-773}
}
2015

Introduction to Medical Data Privacy

Aris Gkoulalas-Divanis, Grigorios Loukides

Medical Data Privacy Handbook 2015: 1-14

Book / chapterDBLP ↗
BibTeX
@misc{bookssp15GkoulalasDivanisL15,
  title = {Introduction to Medical Data Privacy},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/15/Gkoulalas-DivanisL15},
  note = {Medical Data Privacy Handbook 2015: 1-14}
}
2015

Medical Data Privacy Handbook

Aris Gkoulalas-Divanis, Grigorios Loukides

Springer 2015, ISBN 978-3-319-23632-2 [contents]

BibTeX
@misc{booksspGL2015,
  title = {Medical Data Privacy Handbook},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/GL2015},
  note = {Springer 2015, ISBN 978-3-319-23632-2 [contents]}
}
2015

Optimal event sequence sanitization

Grigorios Loukides, Robert Gwadera

SDM 2015: 775-783

Conference paperDBLP ↗
BibTeX
@inproceedings{confsdmLoukidesG15,
  title = {Optimal event sequence sanitization},
  author = {Grigorios Loukides and Robert Gwadera},
  year = {2015},
  url = {https://dblp.org/rec/conf/sdm/LoukidesG15},
  note = {SDM 2015: 775-783}
}
2015

SECRETA: A Tool for Anonymizing Relational, Transaction and RT-Datasets

Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, Christos Tryfonopoulos

Medical Data Privacy Handbook 2015: 83-109

Book / chapterDBLP ↗
BibTeX
@misc{bookssp15PoulisGLST15,
  title = {SECRETA: A Tool for Anonymizing Relational, Transaction and RT-Datasets},
  author = {Giorgos Poulis and Aris Gkoulalas-Divanis and Grigorios Loukides and Spiros Skiadopoulos and Christos Tryfonopoulos},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/15/PoulisGLST15},
  note = {Medical Data Privacy Handbook 2015: 83-109}
}
2015

Utility-Constrained Electronic Health Record Data Publishing Through Generalization and Disassociation

Grigorios Loukides, John Liagouris, Aris Gkoulalas-Divanis, Manolis Terrovitis

Medical Data Privacy Handbook 2015: 149-177

Book / chapterDBLP ↗
BibTeX
@misc{bookssp15LoukidesLGT15,
  title = {Utility-Constrained Electronic Health Record Data Publishing Through Generalization and Disassociation},
  author = {Grigorios Loukides and John Liagouris and Aris Gkoulalas-Divanis and Manolis Terrovitis},
  year = {2015},
  url = {https://dblp.org/rec/books/sp/15/LoukidesLGT15},
  note = {Medical Data Privacy Handbook 2015: 149-177}
}
2014

Apriori-based algorithms for kᵐ-anonymizing trajectory data

Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis

Trans. Data Priv. 7(2): 165-194 (2014)

BibTeX
@article{journalstdpPoulisSLG14,
  title = {Apriori-based algorithms for kᵐ-anonymizing trajectory data},
  author = {Giorgos Poulis and Spiros Skiadopoulos and Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2014},
  url = {https://dblp.org/rec/journals/tdp/PoulisSLG14},
  note = {Trans. Data Priv. 7(2): 165-194 (2014)}
}
2014

Disassociation for electronic health record privacy

Grigorios Loukides, John Liagouris, Aris Gkoulalas-Divanis, Manolis Terrovitis

J. Biomed. Informatics 50: 46-61 (2014)

BibTeX
@article{journalsjbiLoukidesLGT14,
  title = {Disassociation for electronic health record privacy},
  author = {Grigorios Loukides and John Liagouris and Aris Gkoulalas-Divanis and Manolis Terrovitis},
  year = {2014},
  url = {https://doi.org/10.1016/j.jbi.2014.05.009},
  doi = {10.1016/j.jbi.2014.05.009},
  note = {J. Biomed. Informatics 50: 46-61 (2014)}
}
2014

Informatics methods in medical privacy

Aris Gkoulalas-Divanis, Grigorios Loukides, Li Xiong, Jimeng Sun

J. Biomed. Informatics 50: 1-3 (2014)

BibTeX
@article{journalsjbiGkoulalasDivanisLXS14,
  title = {Informatics methods in medical privacy},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides and Li Xiong and Jimeng Sun},
  year = {2014},
  url = {https://doi.org/10.1016/j.jbi.2014.07.010},
  doi = {10.1016/j.jbi.2014.07.010},
  note = {J. Biomed. Informatics 50: 1-3 (2014)}
}
2014

Publishing data from electronic health records while preserving privacy: A survey of algorithms

Aris Gkoulalas-Divanis, Grigorios Loukides, Jimeng Sun

J. Biomed. Informatics 50: 4-19 (2014)

BibTeX
@article{journalsjbiGkoulalasDivanisLS14,
  title = {Publishing data from electronic health records while preserving privacy: A survey of algorithms},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides and Jimeng Sun},
  year = {2014},
  url = {https://doi.org/10.1016/j.jbi.2014.06.002},
  doi = {10.1016/j.jbi.2014.06.002},
  note = {J. Biomed. Informatics 50: 4-19 (2014)}
}
2014

SECRETA: A System for Evaluating and Comparing RElational and Transaction Anonymization algorithms

Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, Christos Tryfonopoulos

EDBT 2014: 620-623

Conference paperDBLP ↗
BibTeX
@inproceedings{confedbtPoulisGLST14,
  title = {SECRETA: A System for Evaluating and Comparing RElational and Transaction Anonymization algorithms},
  author = {Giorgos Poulis and Aris Gkoulalas-Divanis and Grigorios Loukides and Spiros Skiadopoulos and Christos Tryfonopoulos},
  year = {2014},
  url = {https://dblp.org/rec/conf/edbt/PoulisGLST14},
  note = {EDBT 2014: 620-623}
}
2014

Toward smarter healthcare: Anonymizing medical data to support research studies

Aris Gkoulalas-Divanis, Grigorios Loukides, Jimeng Sun

IBM J. Res. Dev. 58(1) (2014)

Journal articleDBLP ↗
BibTeX
@article{journalsibmrdGkoulalasDivanisLS14,
  title = {Toward smarter healthcare: Anonymizing medical data to support research studies},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides and Jimeng Sun},
  year = {2014},
  url = {https://dblp.org/rec/journals/ibmrd/Gkoulalas-DivanisLS14},
  note = {IBM J. Res. Dev. 58(1) (2014)}
}
2013

Anonymization of Electronic Medical Records to Support Clinical Analysis

Aris Gkoulalas-Divanis, Grigorios Loukides

Springer Briefs in Electrical and Computer Engineering, Springer 2013, ISBN 978-1-4614-5667-4, pp. i-xv, 1-72

Book / chapterDBLP ↗
BibTeX
@misc{seriessbeceGkoulalasDivanisL13,
  title = {Anonymization of Electronic Medical Records to Support Clinical Analysis},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2013},
  url = {https://dblp.org/rec/series/sbece/Gkoulalas-DivanisL13},
  note = {Springer Briefs in Electrical and Computer Engineering, Springer 2013, ISBN 978-1-4614-5667-4, pp. i-xv, 1-72}
}
2013

Anonymizing Data with Relational and Transaction Attributes

Giorgos Poulis, Grigorios Loukides, Aris Gkoulalas-Divanis, Spiros Skiadopoulos

ECML/PKDD (3) 2013: 353-369

BibTeX
@inproceedings{confpkddPoulisLGS13,
  title = {Anonymizing Data with Relational and Transaction Attributes},
  author = {Giorgos Poulis and Grigorios Loukides and Aris Gkoulalas-Divanis and Spiros Skiadopoulos},
  year = {2013},
  url = {https://dblp.org/rec/conf/pkdd/PoulisLGS13},
  note = {ECML/PKDD (3) 2013: 353-369}
}
2013

Correction: Enabling Genomic-Phenomic Association Discovery without Sacrificing Anonymity

Raymond D Heatherly, Grigorios Loukides, Joshua C Denny, Jonathan L Haines, Dan M Roden, Bradley A Malin

PloS one 8(6)

BibTeX
@misc{pubmed23825513,
  title = {Correction: Enabling Genomic-Phenomic Association Discovery without Sacrificing Anonymity},
  author = {Raymond D Heatherly and Grigorios Loukides and Joshua C Denny and Jonathan L Haines and Dan M Roden and Bradley A Malin},
  year = {2013},
  url = {https://doi.org/10.1371/annotation/db45627a-50ec-4c52-8b5f-95dec75b1c80},
  doi = {10.1371/annotation/db45627a-50ec-4c52-8b5f-95dec75b1c80},
  note = {PloS one 8(6)}
}
2013

Distance-Based kᵐ-Anonymization of Trajectory Data

Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis

MDM (2) 2013: 57-62

BibTeX
@inproceedings{confmdmPoulisSLG13,
  title = {Distance-Based kᵐ-Anonymization of Trajectory Data},
  author = {Giorgos Poulis and Spiros Skiadopoulos and Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2013},
  url = {https://dblp.org/rec/conf/mdm/PoulisSLG13},
  note = {MDM (2) 2013: 57-62}
}
2013

Efficient and flexible anonymization of transaction data

Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao

Knowl. Inf. Syst. 36(1): 153-210 (2013)

BibTeX
@article{journalskaisLoukidesGS13,
  title = {Efficient and flexible anonymization of transaction data},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Jianhua Shao},
  year = {2013},
  url = {https://dblp.org/rec/journals/kais/LoukidesGS13},
  note = {Knowl. Inf. Syst. 36(1): 153-210 (2013)}
}
2013

Enabling genomic-phenomic association discovery without sacrificing anonymity

Raymond D Heatherly, Grigorios Loukides, Joshua C Denny, Jonathan L Haines, Dan M Roden, Bradley A Malin

PloS one 8(2): e53875

Journal articlePubMed ↗DOI ↗
BibTeX
@article{pubmed23405076,
  title = {Enabling genomic-phenomic association discovery without sacrificing anonymity},
  author = {Raymond D Heatherly and Grigorios Loukides and Joshua C Denny and Jonathan L Haines and Dan M Roden and Bradley A Malin},
  year = {2013},
  url = {https://doi.org/10.1371/journal.pone.0053875},
  doi = {10.1371/journal.pone.0053875},
  note = {PloS one 8(2): e53875}
}
2013

Hiding Sensitive Patterns from Sequence Databases: Research Challenges and Solutions

Grigorios Loukides, Aris Gkoulalas-Divanis

MDM (2) 2013: 45-50

Conference paperDBLP ↗
BibTeX
@inproceedings{confmdmLoukidesG13,
  title = {Hiding Sensitive Patterns from Sequence Databases: Research Challenges and Solutions},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2013},
  url = {https://dblp.org/rec/conf/mdm/LoukidesG13},
  note = {MDM (2) 2013: 45-50}
}
2013

Permutation-Based Sequential Pattern Hiding

Robert Gwadera, Aris Gkoulalas-Divanis, Grigorios Loukides

ICDM 2013: 241-250

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdmGwaderaGL13,
  title = {Permutation-Based Sequential Pattern Hiding},
  author = {Robert Gwadera and Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2013},
  url = {https://dblp.org/rec/conf/icdm/GwaderaGL13},
  note = {ICDM 2013: 241-250}
}
2013

Select-Organize-Anonymize: A Framework for Trajectory Data Anonymization

Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis

ICDM Workshops 2013: 867-874

Conference paperDBLP ↗
BibTeX
@inproceedings{conficdmPoulisSLG13,
  title = {Select-Organize-Anonymize: A Framework for Trajectory Data Anonymization},
  author = {Giorgos Poulis and Spiros Skiadopoulos and Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2013},
  url = {https://dblp.org/rec/conf/icdm/PoulisSLG13},
  note = {ICDM Workshops 2013: 867-874}
}
2013

Utility-Aware Anonymization of Diagnosis Codes

Grigorios Loukides, Aris Gkoulalas-Divanis

IEEE J. Biomed. Health Informatics 17(1): 60-70 (2013)

BibTeX
@article{journalstitbLoukidesG13,
  title = {Utility-Aware Anonymization of Diagnosis Codes},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2013},
  url = {https://doi.org/10.1109/TITB.2012.2212281},
  doi = {10.1109/TITB.2012.2212281},
  note = {IEEE J. Biomed. Health Informatics 17(1): 60-70 (2013)}
}
2012

Anonymization of Longitudinal Electronic Medical Records

Acar Tamersoy, Grigorios Loukides, Mehmet Ercan Nergiz, Yücel Saygin, Bradley A. Malin

IEEE Trans. Inf. Technol. Biomed. 16(3): 413-423 (2012)

BibTeX
@article{journalstitbTamersoyLNSM12,
  title = {Anonymization of Longitudinal Electronic Medical Records},
  author = {Acar Tamersoy and Grigorios Loukides and Mehmet Ercan Nergiz and Yücel Saygin and Bradley A. Malin},
  year = {2012},
  url = {https://doi.org/10.1109/TITB.2012.2185850},
  doi = {10.1109/TITB.2012.2185850},
  note = {IEEE Trans. Inf. Technol. Biomed. 16(3): 413-423 (2012)}
}
2012

Assessing Disclosure Risk and Data Utility Trade-off in Transaction Data Anonymization

Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao

Int. J. Softw. Informatics 6(3): 399-417 (2012)

Journal articleDBLP ↗
BibTeX
@article{journalsijsiLoukidesGS12,
  title = {Assessing Disclosure Risk and Data Utility Trade-off in Transaction Data Anonymization},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Jianhua Shao},
  year = {2012},
  url = {https://dblp.org/rec/journals/ijsi/LoukidesGS12},
  note = {Int. J. Softw. Informatics 6(3): 399-417 (2012)}
}
2012

Utility-guided Clustering-based Transaction Data Anonymization

Aris Gkoulalas-Divanis, Grigorios Loukides

Trans. Data Priv. 5(1): 223-251 (2012)

Journal articleDBLP ↗
BibTeX
@article{journalstdpGkoulalasDivanisL12,
  title = {Utility-guided Clustering-based Transaction Data Anonymization},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2012},
  url = {https://dblp.org/rec/journals/tdp/Gkoulalas-DivanisL12},
  note = {Trans. Data Priv. 5(1): 223-251 (2012)}
}
2012

Utility-preserving transaction data anonymization with low information loss

Grigorios Loukides, Aris Gkoulalas-Divanis

Expert Syst. Appl. 39(10): 9764-9777 (2012)

BibTeX
@article{journalseswaLoukidesG12,
  title = {Utility-preserving transaction data anonymization with low information loss},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2012},
  url = {https://doi.org/10.1016/j.eswa.2012.02.179},
  doi = {10.1016/j.eswa.2012.02.179},
  note = {Expert Syst. Appl. 39(10): 9764-9777 (2012)}
}
2011

A heuristic method for deriving range-based classification rules

Achilles Tziatzios, Jianhua Shao, Grigorios Loukides

FSKD 2011: 925-929

Conference paperDBLP ↗
BibTeX
@inproceedings{conffskdTziatziosSL11,
  title = {A heuristic method for deriving range-based classification rules},
  author = {Achilles Tziatzios and Jianhua Shao and Grigorios Loukides},
  year = {2011},
  url = {https://dblp.org/rec/conf/fskd/TziatziosSL11},
  note = {FSKD 2011: 925-929}
}
2011

COAT: COnstraint-based anonymization of transactions

Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley A. Malin

Knowl. Inf. Syst. 28(2): 251-282 (2011)

BibTeX
@article{journalskaisLoukidesGM11,
  title = {COAT: COnstraint-based anonymization of transactions},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Bradley A. Malin},
  year = {2011},
  url = {https://dblp.org/rec/journals/kais/LoukidesGM11},
  note = {Knowl. Inf. Syst. 28(2): 251-282 (2011)}
}
2011

Identifiability in biobanks: models, measures, and mitigation strategies

Bradley Malin, Grigorios Loukides, Kathleen Benitez, Ellen Wright Clayton

Human genetics 130(3): 383

BibTeX
@article{pubmed21739176,
  title = {Identifiability in biobanks: models, measures, and mitigation strategies},
  author = {Bradley Malin and Grigorios Loukides and Kathleen Benitez and Ellen Wright Clayton},
  year = {2011},
  url = {https://doi.org/10.1007/s00439-011-1042-5},
  doi = {10.1007/s00439-011-1042-5},
  note = {Human genetics 130(3): 383}
}
2011

PCTA: privacy-constrained clustering-based transaction data anonymization

Aris Gkoulalas-Divanis, Grigorios Loukides

PAIS 2011: 5

Conference paperDBLP ↗
BibTeX
@inproceedings{confedbtGkoulalasDivanisL11,
  title = {PCTA: privacy-constrained clustering-based transaction data anonymization},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2011},
  url = {https://dblp.org/rec/conf/edbt/Gkoulalas-DivanisL11},
  note = {PAIS 2011: 5}
}
2011

Preventing range disclosure in k-anonymised data

Grigorios Loukides, Jianhua Shao

Expert Syst. Appl. 38(4): 4559-4574 (2011)

Journal articleDBLP ↗
BibTeX
@article{journalseswaLoukidesS11,
  title = {Preventing range disclosure in k-anonymised data},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2011},
  url = {https://dblp.org/rec/journals/eswa/LoukidesS11},
  note = {Expert Syst. Appl. 38(4): 4559-4574 (2011)}
}
2011

Revisiting sequential pattern hiding to enhance utility

Aris Gkoulalas-Divanis, Grigorios Loukides

KDD 2011: 1316-1324

BibTeX
@inproceedings{confkddGkoulalasDivanisL11,
  title = {Revisiting sequential pattern hiding to enhance utility},
  author = {Aris Gkoulalas-Divanis and Grigorios Loukides},
  year = {2011},
  url = {https://dblp.org/rec/conf/kdd/Gkoulalas-DivanisL11},
  note = {KDD 2011: 1316-1324}
}
2010

Anonymization of administrative billing codes with repeated diagnoses through censoring

Acar Tamersoy, Grigorios Loukides, Joshua C Denny, Bradley Malin

AMIA ... Annual Symposium proceedings. AMIA Symposium 2010: 782

Conference paperPubMed ↗
BibTeX
@inproceedings{pubmed21347085,
  title = {Anonymization of administrative billing codes with repeated diagnoses through censoring},
  author = {Acar Tamersoy and Grigorios Loukides and Joshua C Denny and Bradley Malin},
  year = {2010},
  url = {https://pubmed.ncbi.nlm.nih.gov/21347085/},
  note = {AMIA ... Annual Symposium proceedings. AMIA Symposium 2010: 782}
}
2010

Anonymization of electronic medical records for validating genome-wide association studies

Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley Malin

Proceedings of the National Academy of Sciences of the United States of America 107(17): 7898

BibTeX
@article{pubmed20385806,
  title = {Anonymization of electronic medical records for validating genome-wide association studies},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Bradley Malin},
  year = {2010},
  url = {https://doi.org/10.1073/pnas.0911686107},
  doi = {10.1073/pnas.0911686107},
  note = {Proceedings of the National Academy of Sciences of the United States of America 107(17): 7898}
}
2010

Anonymizing Transaction Data to Eliminate Sensitive Inferences

Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao

DEXA (1) 2010: 400-415

BibTeX
@inproceedings{confdexaLoukidesGS10,
  title = {Anonymizing Transaction Data to Eliminate Sensitive Inferences},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Jianhua Shao},
  year = {2010},
  url = {https://dblp.org/rec/conf/dexa/LoukidesGS10},
  note = {DEXA (1) 2010: 400-415}
}
2010

Beyond safe harbor: automatic discovery of health information de-identification policy alternatives

Kathleen Benitez, Grigorios Loukides, Bradley A. Malin

IHI 2010: 163-172

BibTeX
@inproceedings{confihiBenitezLM10,
  title = {Beyond safe harbor: automatic discovery of health information de-identification policy alternatives},
  author = {Kathleen Benitez and Grigorios Loukides and Bradley A. Malin},
  year = {2010},
  url = {https://doi.org/10.1145/1882992.1883017},
  doi = {10.1145/1882992.1883017},
  note = {IHI 2010: 163-172}
}
2010

Privacy-Preserving Publication of Diagnosis Codes for Effective Biomedical Analysis

Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley Malin

ITAB 2010 Corfu, Greece : 10th International Conference on Information Technology and Applications in Biomedicine : Emerging Technologies for Patient Specific Healthcare : 2-5 November 2010, Aquis Corfu Holiday Palace Hotel, Greece. Int... 2010: 1

Conference paperPubMed ↗DOI ↗
BibTeX
@inproceedings{pubmed25580471,
  title = {Privacy-Preserving Publication of Diagnosis Codes for Effective Biomedical Analysis},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Bradley Malin},
  year = {2010},
  url = {https://doi.org/10.1109/ITAB.2010.5687720},
  doi = {10.1109/ITAB.2010.5687720},
  note = {ITAB 2010 Corfu, Greece : 10th International Conference on Information Technology and Applications in Biomedicine : Emerging Technologies for Patient Specific Healthcare : 2-5 November 2010, Aquis Corfu Holiday Palace Hotel, Greece. Int... 2010: 1}
}
2010

The disclosure of diagnosis codes can breach research participants' privacy

Grigorios Loukides, Joshua C. Denny, Bradley A. Malin

J. Am. Medical Informatics Assoc. 17(3): 322-327 (2010)

BibTeX
@article{journalsjamiaLoukidesDM10,
  title = {The disclosure of diagnosis codes can breach research participants' privacy},
  author = {Grigorios Loukides and Joshua C. Denny and Bradley A. Malin},
  year = {2010},
  url = {https://doi.org/10.1136/jamia.2009.002725},
  doi = {10.1136/jamia.2009.002725},
  note = {J. Am. Medical Informatics Assoc. 17(3): 322-327 (2010)}
}
2009

Privacy challenges and solutions in the social web

Grigorios Loukides, Aris Gkoulalas-Divanis

ACM Crossroads 16(2): 14-18 (2009)

Journal articleDBLP ↗
BibTeX
@article{journalscrossroadsLoukidesG09,
  title = {Privacy challenges and solutions in the social web},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis},
  year = {2009},
  url = {https://dblp.org/rec/journals/crossroads/LoukidesG09},
  note = {ACM Crossroads 16(2): 14-18 (2009)}
}
2009

Towards Preference-Constrained k-Anonymisation

Grigorios Loukides, Achilles Tziatzios, Jianhua Shao

DASFAA Workshops 2009: 231-245

Conference paperDBLP ↗
BibTeX
@inproceedings{confdasfaaLoukidesTS09,
  title = {Towards Preference-Constrained k-Anonymisation},
  author = {Grigorios Loukides and Achilles Tziatzios and Jianhua Shao},
  year = {2009},
  url = {https://dblp.org/rec/conf/dasfaa/LoukidesTS09},
  note = {DASFAA Workshops 2009: 231-245}
}
2009

COAT: COnstraint-based Anonymization of Transactions

Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley A. Malin

CoRR abs/0912.2548 (2009)

PreprintDBLP ↗
BibTeX
@misc{journalscorrabs09122548,
  title = {COAT: COnstraint-based Anonymization of Transactions},
  author = {Grigorios Loukides and Aris Gkoulalas-Divanis and Bradley A. Malin},
  year = {2009},
  url = {https://dblp.org/rec/journals/corr/abs-0912-2548},
  note = {CoRR abs/0912.2548 (2009)}
}
2008

An Efficient Clustering Algorithm for k -Anonymisation

Grigorios Loukides, Jianhua Shao

J. Comput. Sci. Technol. 23(2): 188-202 (2008)

BibTeX
@article{journalsjcstLoukidesS08,
  title = {An Efficient Clustering Algorithm for k -Anonymisation},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2008},
  url = {https://dblp.org/rec/journals/jcst/LoukidesS08},
  note = {J. Comput. Sci. Technol. 23(2): 188-202 (2008)}
}
2008

An Empirical Study of Utility Measures for k-Anonymisation

Grigorios Loukides, Jianhua Shao

BNCOD 2008: 15-27

Conference paperDBLP ↗
BibTeX
@inproceedings{confbncodLoukidesS07a,
  title = {An Empirical Study of Utility Measures for k-Anonymisation},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2008},
  url = {https://dblp.org/rec/conf/bncod/LoukidesS07a},
  note = {BNCOD 2008: 15-27}
}
2007

Clustering-Based K-Anonymisation Algorithms

Grigorios Loukides, Jianhua Shao

DEXA 2007: 761-771

Conference paperDBLP ↗
BibTeX
@inproceedings{confdexaLoukidesS07,
  title = {Clustering-Based K-Anonymisation Algorithms},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2007},
  url = {https://dblp.org/rec/conf/dexa/LoukidesS07},
  note = {DEXA 2007: 761-771}
}
2007

Speeding Up Clustering-Based k -Anonymisation Algorithms with Pre-partitioning

Grigorios Loukides, Jianhua Shao

BNCOD 2007: 203-214

Conference paperDBLP ↗
BibTeX
@inproceedings{confbncodLoukidesS07,
  title = {Speeding Up Clustering-Based k -Anonymisation Algorithms with Pre-partitioning},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2007},
  url = {https://dblp.org/rec/conf/bncod/LoukidesS07},
  note = {BNCOD 2007: 203-214}
}
2006

Towards Balancing Data Usefulness and Privacy Protection in K-Anonymisation

Grigorios Loukides, Jianhua Shao

CIT 2006: 15

Conference paperDBLP ↗
BibTeX
@inproceedings{confIEEEcitLoukidesS06,
  title = {Towards Balancing Data Usefulness and Privacy Protection in K-Anonymisation},
  author = {Grigorios Loukides and Jianhua Shao},
  year = {2006},
  url = {https://dblp.org/rec/conf/IEEEcit/LoukidesS06},
  note = {CIT 2006: 15}
}
Sources, coverage & version policy

Compiled on 20 October 2026. The source union contains 126 DBLP records and 18 PubMed records, with 12 overlaps. The thesis is excluded from the displayed catalogue and BibTeX export, leaving 131 records. Twenty entries visible in an older indexed Google Scholar profile snapshot were checked and matched to existing entries. Scholar restricted further retrieval, so this is not a verified complete Google Scholar bibliography. Citation counts and h-index are deliberately omitted.

Records are reconciled using normalized titles, compatible years, and publication type. Separate publication versions and corrections are retained. The total is a count of bibliographic records, not a count of unique research contributions. Google Scholar badges mean an entry was observed in that snapshot; their absence does not mean a paper is absent from Scholar.

Academic service

Editorial work & committees

Editorial work, programme committees and conference organisation.

Programme committees & reviewing

About

Background

I am an Associate Professor (Senior Lecturer) in the Department of Informatics at King's College London. My interests span data mining, data privacy, biomedical informatics, and data science.

Before joining King's, I held an Assistant Professor position at Cardiff University and a Royal Academy of Engineering Research Fellowship (2011–2016). Earlier, I was a postdoctoral researcher in Biomedical Informatics at Vanderbilt University.

I earned my PhD in Computer Science at Cardiff University and my Diploma in Computer Science at the University of Crete. I am a Fellow of the Higher Education Academy and a member of ACM.

Biography at King's ↗