Grigorios Loukides

ORCID

Publication Activity (10 Years)

Years Active: 2006-2023
Publications (10 Years): 49

Top Venues

CoRR

J. Biomed. Informatics

CPM

ICDM

Cardiff University, UK (PHD)

Education History

Cardiff University, UK

PHD

Publications

Huiping Chen, Grigorios Loukides, Robert Gwadera, Solon P. Pissis
Heavy Nodes in a Small Neighborhood: Algorithms and Applications. SDM (2023)
Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis, Hilde Verbeek
Sparse Suffix and LCP Array: Simple, Direct, Small, and Fast. CoRR (2023)
Giulia Bernardini, Alessio Conte, Garance Gourdel, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi, Leen Stougie, Michelle Sweering
Hide and Mine in Strings: Hardness, Algorithms, and Experiments. IEEE Trans. Knowl. Data Eng. 35 (6) (2023)
Lorraine A. K. Ayad, Grigorios Loukides, Solon P. Pissis
Text Indexing for Long Patterns: Anchors are All you Need. Proc. VLDB Endow. 16 (9) (2023)
Solon P. Pissis, Michael Shekelyan, Chang Liu, Grigorios Loukides
Frequency-Constrained Substring Complexity. SPIRE (2023)
Grigorios Loukides, Solon P. Pissis, Sharma V. Thankachan, Wiktor Zuba
Suffix-Prefix Queries on a Dictionary. CPM (2023)
Grigorios Loukides, Solon P. Pissis, Michelle Sweering
Bidirectional String Anchors for Improved Text Indexing and Top-$K$ Similarity Search. IEEE Trans. Knowl. Data Eng. 35 (11) (2023)
Haodi Zhong, Grigorios Loukides, Alessio Conte, Solon P. Pissis
Jaccard Median for Ego-network Segmentation. ICDM (2022)
Haodi Zhong, Grigorios Loukides, Solon P. Pissis
Clustering sequence graphs. Data Knowl. Eng. 138 (2022)
Michael Shekelyan, Grigorios Loukides
Differentially Private Top-k Selection via Canonical Lipschitz Mechanism. CoRR (2022)
Haodi Zhong, Grigorios Loukides, Solon P. Pissis
Clustering Demographics and Sequences of Diagnosis Codes. IEEE J. Biomed. Health Informatics 26 (5) (2022)
Giulia Bernardini, Alessio Conte, Estéban Gabory, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Giulia Punzi, Michelle Sweering
On Strings Having the Same Length- k Substrings. CPM (2022)
Giulia Bernardini, Huiping Chen, Grigorios Loukides, Solon P. Pissis, Leen Stougie, Michelle Sweering
Making de Bruijn Graphs Eulerian. CPM (2022)
Grigorios Loukides, Solon P. Pissis
All-pairs suffix/prefix in optimal time using Aho-Corasick space. Inf. Process. Lett. 178 (2022)
Grigorios Loukides, Solon P. Pissis, Michelle Sweering
String Sampling with Bidirectional String Anchors. CoRR (2021)
Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Solon P. Pissis, Michelle Sweering
On Breaking Truss-Based Communities. KDD (2021)
Panagiotis Charalampopoulos, Huiping Chen, Peter Christen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Jakub Radoszewski
Pattern Masking for Dictionary Matching. ISAAC (2021)
Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi
Beyond the BEST Theorem: Fast Assessment of Eulerian Trails. FCT (2021)
Giulia Bernardini, Huiping Chen, Gabriele Fici, Grigorios Loukides, Solon P. Pissis
Reverse-Safe Text Indexing. ACM J. Exp. Algorithmics 26 (2021)
Leqian Zheng, Hau Chan, Grigorios Loukides, Minming Li
Maximizing approximately k-submodular functions. CoRR (2021)
Changhui Hu, Jin Li, Zheli Liu, Xiaojie Guo, Yu Wei, Xuan Guang, Grigorios Loukides, Changyu Dong
How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free. USENIX Security Symposium (2021)
Huiping Chen, Changyu Dong, Liyue Fan, Grigorios Loukides, Solon P. Pissis, Leen Stougie
Differentially Private String Sanitization for Frequency-Based Mining Tasks. ICDM (2021)
Leqian Zheng, Hau Chan, Grigorios Loukides, Minming Li
-Submodular Functions. SDM (2021)
Huiping Chen, Grigorios Loukides, Solon P. Pissis, Hau Chan
Influence maximization in the presence of vulnerable nodes: A ratio perspective. Theor. Comput. Sci. 852 (2021)
Grigorios Loukides, Solon P. Pissis
Bidirectional String Anchors: A New String Sampling Mechanism. ESA (2021)
Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone, Michelle Sweering
Combinatorial Algorithms for String Sanitization. ACM Trans. Knowl. Discov. Data 15 (1) (2021)
Giulia Bernardini, Huiping Chen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Leen Stougie, Michelle Sweering
String Sanitization Under Edit Distance. CPM (2020)
Haodi Zhong, Grigorios Loukides, Robert Gwadera
Clustering datasets with demographics and diagnosis codes. J. Biomed. Informatics 102 (2020)
Changhui Hu, Jin Li, Zheli Liu, Xiaojie Guo, Yu Wei, Xuan Guang, Grigorios Loukides, Changyu Dong
How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free. IACR Cryptol. ePrint Arch. 2020 (2020)
Grigorios Loukides, Robert Gwadera, Shing-Wan Chang
Overexposure-Aware Influence Maximization. ACM Trans. Internet Techn. 20 (4) (2020)
Hayam Alamro, Costas S. Iliopoulos, Grigorios Loukides
Efficiently Detecting Web Spambots in a Temporally Annotated Sequence. AINA (2020)
Panagiotis Charalampopoulos, Huiping Chen, Peter Christen, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Jakub Radoszewski
Pattern Masking for Dictionary Matching. CoRR (2020)
Grigorios Loukides, George Theodorakopoulos
Location histogram privacy by Sensitive Location Hiding and Target Histogram Avoidance/Resemblance. Knowl. Inf. Syst. 62 (7) (2020)
Giulia Bernardini, Alessio Conte, Garance Gourdel, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giulia Punzi, Leen Stougie, Michelle Sweering
Hide and Mine in Strings: Hardness and Algorithms. ICDM (2020)
Hau Chan, Grigorios Loukides, Zhenghui Su
Algorithms for Optimizing the Ratio of Monotone k-Submodular Functions. ECML/PKDD (3) (2020)
Giulia Bernardini, Huiping Chen, Gabriele Fici, Grigorios Loukides, Solon P. Pissis
Reverse-Safe Data Structures for Text Indexing. ALENEX (2020)
Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone
String Sanitization: A Combinatorial Approach. ECML/PKDD (1) (2019)
Huiping Chen, Grigorios Loukides, Jiashi Fan, Hau Chan
Limiting the Influence to Vulnerable Users in Social Networks: A Ratio Perspective. AINA (2019)
Grigorios Loukides, George Theodorakopoulos
Location histogram privacy by sensitive location hiding and target histogram avoidance/resemblance (extended version). CoRR (2019)
Giulia Bernardini, Huiping Chen, Alessio Conte, Roberto Grossi, Grigorios Loukides, Nadia Pisanti, Solon P. Pissis, Giovanna Rosone
String Sanitization: A Combinatorial Approach. CoRR (2019)
Changyu Dong, Grigorios Loukides
Approximating Private Set Union/Intersection Cardinality with Logarithmic Complexity. IACR Cryptol. ePrint Arch. 2018 (2018)
Oluwole I. Ajala, Hayam Alamro, Costas S. Iliopoulos, Grigorios Loukides
Towards String Sanitization. AIAI (Workshops) (2018)
Grigorios Loukides, Robert Gwadera
Preventing the diffusion of information to vulnerable users while preserving PageRank. Int. J. Data Sci. Anal. 5 (1) (2018)
Changyu Dong, Grigorios Loukides
Approximating Private Set Union/Intersection Cardinality With Logarithmic Complexity. IEEE Trans. Inf. Forensics Secur. 12 (11) (2017)
Giorgos Poulis, Grigorios Loukides, Spiros Skiadopoulos, Aris Gkoulalas-Divanis
Anonymizing datasets with demographics and diagnosis codes in the presence of utility constraints. J. Biomed. Informatics 65 (2017)
Robert Gwadera, Grigorios Loukides
Cost-Effective Viral Marketing in the Latency Aware Independent Cascade Model. PAKDD (1) (2017)
Grigorios Loukides, Robert Gwadera
Limiting the Diffusion of Information by a Selective PageRank-Preserving Approach. DSAA (2016)
Grigorios Loukides, Robert Gwadera
Optimal event sequence sanitization. SDM (2015)
Neelam Memon, Grigorios Loukides, Jianhua Shao
A Parallel Method for Scalable Anonymization of Transaction Data. ISPDC (2015)
Aris Gkoulalas-Divanis, Grigorios Loukides, Jimeng Sun
Toward smarter healthcare: Anonymizing medical data to support research studies. IBM J. Res. Dev. 58 (1) (2014)
Aris Gkoulalas-Divanis, Grigorios Loukides, Li Xiong, Jimeng Sun
Informatics methods in medical privacy. J. Biomed. Informatics 50 (2014)
Aris Gkoulalas-Divanis, Grigorios Loukides, Jimeng Sun
Publishing data from electronic health records while preserving privacy: A survey of algorithms. J. Biomed. Informatics 50 (2014)
Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, Christos Tryfonopoulos
SECRETA: A System for Evaluating and Comparing RElational and Transaction Anonymization algorithms. EDBT (2014)
Grigorios Loukides, John Liagouris, Aris Gkoulalas-Divanis, Manolis Terrovitis
Disassociation for electronic health record privacy. J. Biomed. Informatics 50 (2014)
Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis
-anonymizing trajectory data. Trans. Data Priv. 7 (2) (2014)
Grigorios Loukides, Aris Gkoulalas-Divanis
Utility-Aware Anonymization of Diagnosis Codes. IEEE J. Biomed. Health Informatics 17 (1) (2013)
Robert Gwadera, Aris Gkoulalas-Divanis, Grigorios Loukides
Permutation-Based Sequential Pattern Hiding. ICDM (2013)
Grigorios Loukides, Aris Gkoulalas-Divanis
Hiding Sensitive Patterns from Sequence Databases: Research Challenges and Solutions. MDM (2) (2013)
Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis
Distance-Based k^m-Anonymization of Trajectory Data. MDM (2) (2013)
Giorgos Poulis, Spiros Skiadopoulos, Grigorios Loukides, Aris Gkoulalas-Divanis
Select-Organize-Anonymize: A Framework for Trajectory Data Anonymization. ICDM Workshops (2013)
Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao
Efficient and flexible anonymization of transaction data. Knowl. Inf. Syst. 36 (1) (2013)
Giorgos Poulis, Grigorios Loukides, Aris Gkoulalas-Divanis, Spiros Skiadopoulos
Anonymizing Data with Relational and Transaction Attributes. ECML/PKDD (3) (2013)
Grigorios Loukides, Aris Gkoulalas-Divanis
Utility-preserving transaction data anonymization with low information loss. Expert Syst. Appl. 39 (10) (2012)
Acar Tamersoy, Grigorios Loukides, Mehmet Ercan Nergiz, Yücel Saygin, Bradley A. Malin
Anonymization of Longitudinal Electronic Medical Records. IEEE Trans. Inf. Technol. Biomed. 16 (3) (2012)
Aris Gkoulalas-Divanis, Grigorios Loukides
Utility-guided Clustering-based Transaction Data Anonymization. Trans. Data Priv. 5 (1) (2012)
Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao
Assessing Disclosure Risk and Data Utility Trade-off in Transaction Data Anonymization. Int. J. Softw. Informatics 6 (3) (2012)
Achilles Tziatzios, Jianhua Shao, Grigorios Loukides
A heuristic method for deriving range-based classification rules. FSKD (2011)
Aris Gkoulalas-Divanis, Grigorios Loukides
PCTA: privacy-constrained clustering-based transaction data anonymization. PAIS (2011)
Grigorios Loukides, Jianhua Shao
Preventing range disclosure in k-anonymised data. Expert Syst. Appl. 38 (4) (2011)
Aris Gkoulalas-Divanis, Grigorios Loukides
Revisiting sequential pattern hiding to enhance utility. KDD (2011)
Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley A. Malin
COAT: COnstraint-based anonymization of transactions. Knowl. Inf. Syst. 28 (2) (2011)
Kathleen Benitez, Grigorios Loukides, Bradley A. Malin
Beyond safe harbor: automatic discovery of health information de-identification policy alternatives. IHI (2010)
Grigorios Loukides, Joshua C. Denny, Bradley A. Malin
The disclosure of diagnosis codes can breach research participants' privacy. J. Am. Medical Informatics Assoc. 17 (3) (2010)
Grigorios Loukides, Aris Gkoulalas-Divanis, Jianhua Shao
Anonymizing Transaction Data to Eliminate Sensitive Inferences. DEXA (1) (2010)
Grigorios Loukides, Aris Gkoulalas-Divanis
Privacy challenges and solutions in the social web. ACM Crossroads 16 (2) (2009)
Grigorios Loukides, Aris Gkoulalas-Divanis, Bradley A. Malin
COAT: COnstraint-based Anonymization of Transactions CoRR (2009)
Grigorios Loukides, Achilles Tziatzios, Jianhua Shao
-Anonymisation. DASFAA Workshops (2009)
Grigorios Loukides, Jianhua Shao
An Empirical Study of Utility Measures for k-Anonymisation. BNCOD (2008)
Grigorios Loukides, Jianhua Shao
-Anonymisation. J. Comput. Sci. Technol. 23 (2) (2008)
Grigorios Loukides, Jianhua Shao
Data utility and privacy protection trade-off in k-anonymisation. PAIS (2008)
Grigorios Loukides, Jianhua Shao
Capturing data usefulness and privacy protection in K-anonymisation. SAC (2007)
Grigorios Loukides, Jianhua Shao
-Anonymisation Algorithms with Pre-partitioning. BNCOD (2007)
Grigorios Loukides, Jianhua Shao
Clustering-Based K-Anonymisation Algorithms. DEXA (2007)
Grigorios Loukides, Jianhua Shao
Towards Balancing Data Usefulness and Privacy Protection in K-Anonymisation. CIT (2006)

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Publication Activity (10 Years)

Top Topics

Top Venues

Grigorios Loukides