George H. L. Fletcher

Publication Activity (10 Years)

Years Active: 2004-2023
Publications (10 Years): 46

Top Topics

Relation Algebra

Expressive Power

Top Venues

SIGMOD Conference

Publications

Daphne Miedema, Michael Liut, George H. L. Fletcher, Efthimia Aivaloglou
"There is no ambiguity on what to return": Investigating the Prevalence of SQL Misconceptions. Koli Calling (2023)
Larissa Capobianco Shimomura, George H. L. Fletcher, Nikolay Yakovets
ProGGD - Data Profiling on Knowledge Graphs using Graph Generating Dependencies. ISWC (Posters/Demos/Industry) (2023)
Stanley Clark, Nikolay Yakovets, George H. L. Fletcher, Nicola Zannone
Poster: A Flexible Relationship-Based Access Control Policy Generator. SACMAT (2022)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Comparing the expressiveness of downward fragments of the relation algebra with transitive closure on trees. Inf. Syst. 89 (2020)
Anil Yaman, Giovanni Iacca, Decebal Constantin Mocanu, George H. L. Fletcher, Mykola Pechenizkiy
Novelty Producing Synaptic Plasticity. CoRR (2020)
Thomas Mulder, Nikolay Yakovets, George H. L. Fletcher
Towards Planning of Regular Queries with Memory. EDBT (2020)
Akhil Arora, Arnab Bhattacharya, George H. L. Fletcher
GRADES-NDA 2019: Joint International Workshop on Graph Data Management Experiences & Systems and Network Data Analytics. SIGMOD Conference (2019)
Anil Yaman, Giovanni Iacca, Decebal Constantin Mocanu, George H. L. Fletcher, Mykola Pechenizkiy
Learning with Delayed Synaptic Plasticity. CoRR (2019)
Jianpeng Zhang, Kaijie Zhu, Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
Cluster-preserving sampling from fully-dynamic streaming graphs. Inf. Sci. 482 (2019)
George H. L. Fletcher, Alexandra Poulovassilis, Petra Selmer, Peter T. Wood
Approximate Querying for the Property Graph Language Cypher. IEEE BigData (2019)
Yulong Pei, Jianpeng Zhang, George H. L. Fletcher, Mykola Pechenizkiy
Infinite motif stochastic blockmodel for role discovery in networks. ASONAM (2019)
Kaijie Zhu, George H. L. Fletcher, Nikolay Yakovets, Odysseas Papapetrou, Yuqing Wu
Scalable temporal clique enumeration. SSTD (2019)
Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
norm regularized nonnegative matrix tri-factorization. ASONAM (2019)
Radu Stoica, George H. L. Fletcher, Juan F. Sequeda
On Directly Mapping Relational Databases to Property Graphs. AMW (2019)
Jochem Kuijpers, George H. L. Fletcher, Nikolay Yakovets, Tobias Lindaaker
An Experimental Study of Context-Free Path Query Evaluation Methods. SSDBM (2019)
Anil Yaman, Decebal Constantin Mocanu, Giovanni Iacca, Matt Coler, George H. L. Fletcher, Mykola Pechenizkiy
Evolving Plasticity for Autonomous Learning under Changing Environmental Conditions. CoRR (2019)
Anil Yaman, Giovanni Iacca, Decebal Constantin Mocanu, George H. L. Fletcher, Mykola Pechenizkiy
Learning with delayed synaptic plasticity. GECCO (2019)
Anil Yaman, Giovanni Iacca, Matt Coler, George H. L. Fletcher, Mykola Pechenizkiy
Multi-strategy Differential Evolution. EvoApplications (2018)
Wouter Ligtenberg, Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
Tink: A Temporal Graph Analytics Library for Apache Flink. WWW (Companion Volume) (2018)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Comparing Downward Fragments of the Relational Calculus with Transitive Closure on Trees. CoRR (2018)
Anil Yaman, Decebal Constantin Mocanu, Giovanni Iacca, George H. L. Fletcher, Mykola Pechenizkiy
Limited Evaluation Cooperative Co-evolutionary Differential Evolution for Large-scale Neuroevolution. CoRR (2018)
Renzo Angles, Marcelo Arenas, Pablo Barceló, Peter A. Boncz, George H. L. Fletcher, Claudio Gutiérrez, Tobias Lindaaker, Marcus Paradies, Stefan Plantikow, Juan F. Sequeda, Oskar van Rest, Hannes Voigt
G-CORE: A Core for Future Graph Query Languages. SIGMOD Conference (2018)
Yulong Pei, Xin Du, Jianpeng Zhang, George H. L. Fletcher, Mykola Pechenizkiy
struc2gauss: Structure Preserving Network Embedding via Gaussian Embedding. CoRR (2018)
Nikolay Yakovets, Li Wang, George H. L. Fletcher, B. Craig Taverner, Alexandra Poulovassilis
Histogram Domain Ordering for Path Selectivity Estimation. EDBT (2018)
Jianpeng Zhang, Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
A bounded-size clustering algorithm on fully-dynamic streaming graphs. Intell. Data Anal. 22 (5) (2018)
Yulong Pei, Jianpeng Zhang, George H. L. Fletcher, Mykola Pechenizkiy
DyNMF: Role Analytics in Dynamic Social Networks. IJCAI (2018)
Anil Yaman, Decebal Constantin Mocanu, Giovanni Iacca, George H. L. Fletcher, Mykola Pechenizkiy
Limited evaluation cooperative co-evolutionary differential evolution for large-scale neuroevolution. GECCO (2018)
George H. L. Fletcher, Hannes Voigt, Nikolay Yakovets
Declarative Graph Querying in Practice and Theory. EDBT (2017)
Renzo Angles, Marcelo Arenas, Pablo Barceló, Peter A. Boncz, George H. L. Fletcher, Claudio Gutiérrez, Tobias Lindaaker, Marcus Paradies, Stefan Plantikow, Juan F. Sequeda, Oskar van Rest, Hannes Voigt
G-CORE: A Core for Future Graph Query Languages. CoRR (2017)
Guillaume Bagan, Angela Bonifati, Radu Ciucanu, George H. L. Fletcher, Aurélien Lemay, Nicky Advokaat
gMark: Schema-Driven Generation of Graphs and Queries. ICDE (2017)
Guillaume Bagan, Angela Bonifati, Radu Ciucanu, George H. L. Fletcher, Aurélien Lemay, Nicky Advokaat
gMark: Schema-Driven Generation of Graphs and Queries. IEEE Trans. Knowl. Data Eng. 29 (4) (2017)
Jianpeng Zhang, Kaijie Zhu, Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
Clustering-Structure Representative Sampling from Graph Streams. COMPLEX NETWORKS (2017)
Wilco van Leeuwen, Angela Bonifati, George H. L. Fletcher, Nikolay Yakovets
Stability notions in synthetic graph generation: a preliminary study. EDBT (2017)
Laurent Daynès, George H. L. Fletcher, Wook-Shin Han
Language integrated queries: towards standard logics for big data analytics (NII Shonan Meeting 2017-6). NII Shonan Meet. Rep. 2017 (2017)
Lucien D. J. Valstar, George H. L. Fletcher, Yuichi Yoshida
Landmark Indexing for Evaluation of Label-Constrained Reachability Queries. SIGMOD Conference (2017)
Wouter van Heeswijk, George H. L. Fletcher, Mykola Pechenizkiy
On structure preserving sampling and approximate partitioning of graphs. SAC (2016)
George H. L. Fletcher, Taro Takaguchi, Yuichi Yoshida
Analytics on complex networks: scalable solutions for empirical questions (NII Shonan Meeting 2016-1). NII Shonan Meet. Rep. 2016 (2016)
George H. L. Fletcher, Marc Gyssens, Jan Paredaens, Dirk Van Gucht, Yuqing Wu
Structural characterizations of the navigational expressiveness of relation algebras on a tree. J. Comput. Syst. Sci. 82 (2) (2016)
Guillaume Bagan, Angela Bonifati, Radu Ciucanu, George H. L. Fletcher, Aurélien Lemay, Nicky Advokaat
Generating Flexible Workloads for Graph Databases. Proc. VLDB Endow. 9 (13) (2016)
Jonathan M. Sumrall, George H. L. Fletcher, Alexandra Poulovassilis, Johan Svensson, Magnus Vejlstrup, Chris Vest, Jim Webber
Investigations on Path Indexing for Graph Databases. Euro-Par Workshops (2016)
Alejandro Montes García, Natalia Stash, Marc Fabri, Paul De Bra, George H. L. Fletcher, Mykola Pechenizkiy
WiBAF into a CMS: Personalization in Learning Environments Made Easy. UMAP (Extended Proceedings) (2016)
Jianpeng Zhang, Yulong Pei, George H. L. Fletcher, Mykola Pechenizkiy
Structural measures of clustering quality on graph samples. ASONAM (2016)
George H. L. Fletcher, Federica Mandreoli
No users no dataspaces! Query-driven dataspace orchestration? SEBD (2016)
George H. L. Fletcher, Jeroen Peters, Alexandra Poulovassilis
Efficient regular path query evaluation using path indexes. EDBT (2016)
Alejandro Montes García, Natalia Stash, Marc Fabri, Paul De Bra, George H. L. Fletcher, Mykola Pechenizkiy
Adaptive web-based educational application for autistic students. HT (Extended Proceedings) (2016)
Erik Agterdenbos, George H. L. Fletcher, Chee-Yong Chan, Stijn Vansummeren
Empirical evaluation of guarded structural indexing. EDBT (2016)
Guillaume Bagan, Angela Bonifati, Radu Ciucanu, George H. L. Fletcher, Aurélien Lemay, Nicky Advokaat
Controlling Diversity in Benchmarking Graph Databases. CoRR (2015)
George H. L. Fletcher, Marc Gyssens, Jan Paredaens, Dirk Van Gucht, Yuqing Wu
Structural characterizations of the navigational expressiveness of relation algebras on a tree. CoRR (2015)
Dimitri Surinx, George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
Relative expressive power of navigational querying on graphs using transitive closure. Log. J. IGPL 23 (5) (2015)
Yongming Luo, George H. L. Fletcher, Jan Hidders, Paul De Bra
Efficient and scalable trie-based algorithms for computing set containment relations. ICDE (2015)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
The impact of transitive closure on the expressiveness of navigational query languages on unlabeled graphs. Ann. Math. Artif. Intell. 73 (1-2) (2015)
Jelle Hellings, Marc Gyssens, Yuqing Wu, Dirk Van Gucht, Jan Van den Bussche, Stijn Vansummeren, George H. L. Fletcher
Relative expressive power of downward fragments of navigational query languages on trees and chains. DBPL (2015)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Dimitri Surinx, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
Relative expressive power of navigational querying on graphs. Inf. Sci. 298 (2015)
Bart G. J. Wolff, George H. L. Fletcher, James J. Lu
An Extensible Framework for Query Optimization on TripleT-based RDF Stores. EDBT/ICDT Workshops (2015)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren
Similarity and bisimilarity notions appropriate for characterizing indistinguishability in fragments of the calculus of relations. J. Log. Comput. 25 (3) (2015)
Alejandro Montes García, Paul De Bra, George H. L. Fletcher, Mykola Pechenizkiy
A DSL based on CSS for hypertext adaptation. HT (2014)
François Picalausa, George H. L. Fletcher, Jan Hidders, Stijn Vansummeren
Principles of Guarded Structural Indexing. ICDT (2014)
George H. L. Fletcher
On reflection in Linked Data management. ICDE Workshops (2014)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Dimitri Surinx, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
Relative Expressive Power of Navigational Querying on Graphs. CoRR (2014)
Yongming Luo, Yannick de Lange, George H. L. Fletcher, Paul De Bra, Jan Hidders, Yuqing Wu
Bisimulation Reduction of Big Graphs on MapReduce. BNCOD (2013)
Yongming Luo, George H. L. Fletcher, Jan Hidders, Paul De Bra, Yuqing Wu
Regularities and dynamics in bisimulation reductions of big graphs. GRADES (2013)
Yuqing Wu, George H. L. Fletcher
Search on Graphs: Theory Meets Engineering. APWeb (2013)
George H. L. Fletcher
What we talk about when we talk about graphs. EDBT/ICDT Workshops (2013)
Ahmed Ibrahim, George H. L. Fletcher
Efficient processing of containment queries on nested sets. EDBT (2013)
Yongming Luo, George H. L. Fletcher, Jan Hidders, Yuqing Wu, Paul De Bra
External memory K-bisimulation reduction of big graphs. CIKM (2013)
John Roijackers, George H. L. Fletcher
On Bridging Relational and Document-Centric Data Stores. BNCOD (2013)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
The Impact of Transitive Closure on the Boolean Expressiveness of Navigational Query Languages on Graphs. FoIKS (2012)
Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort
Efficient external-memory bisimulation on DAGs. SIGMOD Conference (2012)
Yongming Luo, George H. L. Fletcher, Jan Hidders, Yuqing Wu, Paul De Bra
I/O-efficient algorithms for localized bisimulation partition construction and maintenance on massive graphs CoRR (2012)
George H. L. Fletcher, Prasenjit Mitra
WIDM 2012: the 12th international workshop on web information and data management. CIKM (2012)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren
Similarity and bisimilarity notions appropriate for characterizing indistinguishability in fragments of the calculus of relations. CoRR (2012)
François Picalausa, Yongming Luo, George H. L. Fletcher, Jan Hidders, Stijn Vansummeren
A Structural Approach to Indexing Triples. ESWC (2012)
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu
Relative expressive power of navigational querying on graphs. ICDT (2011)
George H. L. Fletcher, Jan Hidders, Stijn Vansummeren, Yongming Luo, François Picalausa, Paul De Bra
On guarded simulations and acyclic first-order languages. DBPL (2011)
Wouter J. Haffmans, George H. L. Fletcher
Efficient RDFS Entailment in External Memory. OTM Workshops (2011)
Jelle Hellings, George H. L. Fletcher, Herman J. Haverkort
I/O efficient bisimulation partitioning on very large directed acyclic graphs CoRR (2011)
James J. Lu, Sebastien Siva, Ojas Parekh, George H. L. Fletcher, Hantao Zhang
Constraint processing in relational database systems: from theory to implementation. SAC (2010)
George H. L. Fletcher, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren
Towards a theory of search queries. ACM Trans. Database Syst. 35 (4) (2010)
George H. L. Fletcher, Dirk Van Gucht, Yuqing Wu, Marc Gyssens, Sofia Brenes, Jan Paredaens
A methodology for coupling fragments of XPath with structural indexes for XML documents. Inf. Syst. 34 (7) (2009)
James J. Lu, George H. L. Fletcher
Thinking about computational thinking. SIGCSE (2009)
George H. L. Fletcher, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren
Towards a theory of search queries. ICDT (2009)
George H. L. Fletcher, James J. Lu
Education - Human computing skills: rethinking the K-12 experience. Commun. ACM 52 (2) (2009)
George H. L. Fletcher, Marc Gyssens, Jan Paredaens, Dirk Van Gucht
On the Expressive Power of the Relational Algebra on Finite Sets of Relation Pairs. IEEE Trans. Knowl. Data Eng. 21 (6) (2009)
George H. L. Fletcher, Catharine M. Wyss
Towards a General Framework for Effective Solutions to the Data Mapping Problem. J. Data Semant. 14 (2009)
George H. L. Fletcher, Peter W. Beck
Scalable indexing of RDF graphs for efficient join processing. CIKM (2009)
Rada Chirkova, George H. L. Fletcher
Towards Well-Behaved Schema Evolution. WebDB (2009)
George H. L. Fletcher, Peter W. Beck
A role-free approach to indexing large RDF data sets in secondary memory for efficient SPARQL evaluation CoRR (2008)
George H. L. Fletcher, Peter W. Beck
Indexing Social Semantic Data. ISWC (Posters & Demos) (2008)
George H. L. Fletcher, Dirk Van Gucht, Yuqing Wu, Marc Gyssens, Jan Paredaens
Coupling Fragments of XPath with XML Indexing and Query Decomposition. EROW (2007)
George H. L. Fletcher, Dirk Van Gucht, Yuqing Wu, Marc Gyssens, Sofia Brenes, Jan Paredaens
A Methodology for Coupling Fragments of XPath with Structural Indexes for XML Documents. DBPL (2007)
Marc Gyssens, Jan Paredaens, Dirk Van Gucht, George H. L. Fletcher
Structural characterizations of the semantics of XPath as navigation tool on a document. PODS (2006)
George H. L. Fletcher, Catharine M. Wyss
Data Mapping as Search. EDBT (2006)
George H. L. Fletcher, Catharine M. Wyss, Edward L. Robertson, Dirk Van Gucht
A Calculus for Data Mapping. Electron. Notes Theor. Comput. Sci. 150 (2) (2006)
George H. L. Fletcher, Catharine M. Wyss
Discovering complex mapping expressions with the TUPELO data mapping system. IHIS (2005)
George H. L. Fletcher, Catharine M. Wyss
Relational data mapping in MIQIS. SIGMOD Conference (2005)
George H. L. Fletcher, Catharine M. Wyss
Mapping Between Data Sources on the Web. WIRI (2005)
George H. L. Fletcher
The Data Mapping Problem: Algorithmic and Logical Characterizations. ICDE Workshops (2005)
George H. L. Fletcher, Hardik A. Sheth, Katy Börner
Unstructured Peer-to-Peer Networks: Topological Properties and Search Performance. AP2PC (2004)