I am currently working at Univ. Paris Saclay, in the LahDAK (Data and Knowledge) team of the LRI. Before that, I began working on CrowdSourcing as a Postdoc in the Data Management group at Tel-Aviv University, under the direction of Tova Milo. I have previously worked as a PhD student in the MOSTRARE team, at Lille1 University. My thesis dealt with database security, especially access control in XML documents. This PhD has been supervised by S.Tison and co-advised by S.Staworko, in a work with Y.Roos, AC.Caron, and I.Boneva.

CV

Journal article:

• A trichotomy for regular simple path queries on graphs. [Bibtex]
  In Journal of Computer and System Sciences (2020).
  Guillaume Bagan, Angela Bonifati, Benoît Groz
• Hypervolume Subset Selection with Small Subsets.
  In Evolutionary Computation (2019) [lien éditeur]
  B.Groz, S.Maniu.
• Efficient testing and matching of deterministic regular expressions. [editor version] [Bibtex]
  In Journal of Computer and System Sciences (2017).
  B.Groz, S.Maneth.
• On the Complexity of Evaluating Order Queries with the Crowd. [Bibtex]
  In IEEE Data Engineering Bulletin (2015).
  B.Groz, S.Maneth.
• Static Analysis of XML Security Views and Query Rewriting. [Bibtex]
  In Information and Computation, special issue on Security and Rewriting Techniques (2014).
  B.Groz, S.Staworko, A.-C. Caron, Y.Roos, and S.Tison.

International Conferences:

• Static Analysis of Graph Database Transformations
  to appear In 42nd Symposium on Principles of Database Systems (PODS), June 18-23, 2023, Seattle, USA.
  Iovka Boneva, Benoît Groz, Jan Hidders, Filip Murlak, Slawomir Staworko.
• Skyline computation with noisy comparisons [Bibtex]
  In Combinatorial Algorithms - 31st International Workshop, IWOCA 2020, Bordeaux, France, June 8-10, 2020.
  Benoît Groz, Frederik Mallmann-Trenn, Claire Mathieu, Victor Verdugo.
• Filtering With the Crowd: CrowdScreen Revisited [Bibtex] [slides]
  In 19th International Conference on Database Theory (ICDT), March 15-18, 2016, Bordeaux, France.
  B.Groz, E.Levin, I.Meilijson, and T.Milo.
• Skyline Queries with Noisy Comparisons [Bibtex] [slides]
  In 34st Symposium on Principles of Database Systems (PODS), May 31-June 4, 2015, Melbourne, Australia.
  B.Groz and T.Milo.
• A Trichotomy for Regular Simple Path Queries on Graphs [Bibtex]
  In 32st Symposium on Principles of Database Systems (PODS), June 22-27, 2013, NY, USA.
  G.Bagan, A.Bonifati, and B.Groz.
• Deterministic Regular Expressions in Linear Time [Bibtex] [slides]
  In 31st Symposium on Principles of Database Systems (PODS), May 20-24, 2012, Scottsdale, AZ, USA.
  B.Groz, S.Maneth, and S.Staworko.
• View update translation for XML [Bibtex] [slides]
  In 14th International Conference on Database Theory (ICDT), March 21-24, 2011, Uppsala, Sweden.
  I.Boneva, B.Groz, S.Tison, A.-C. Caron, Y. Roos, and S.Staworko.
• XML Security Views Revisited [Bibtex]
  In 12th International Symposium on Database Programming Languages (DBPL), August 2009, Lyon, France.
  S.Staworko, B.Groz, A.-C. Caron, Y. Roos, and S. Tison.

Workshop talks:

• The View Update Problem for XML [Bibtex]
  In EDBT Workshops (Updates in XML), March 2010, Lausanne.
  S.Staworko, I.Boneva, and B.Groz.
• Query Rewriting for XML Access Control [slides] SecReT'09, with S.Staworko, A.-C. Caron, Y. Roos, and S. Tison.
• Talk on concurrent games at GAMES'07, with L.Doyen and JF.Raskin.

PhD thesis

Previous work during school years at the ENS CACHAN:

• Inclusion and Equivalence of Conjunctive Queries
  under supervision from Luc Segoufin M2report (in french)
• Counting with Presburger Constraints over Unranked Trees
  under supervision from Wolfgang Thomas Licence report
• Optimal Strategies for Reachability in Concurent Games
  under supervision from JF.Raskin

Scientific Interests :

I am mainly interested in formal methods for computer science : algorithmics, graphs, logics, automata, game theory, complexity, querying uncertain data, crowdSourcing...

Teaching :

These years I am mostly teaching:

• Datawarehouses (focusing on ROLAP technology, but also on NoSQL systems):
  Multi-dimensional model, OLAP, logical schemas, SQL analytical queries, partitioning, indexes, ETL processes, architectures, column stores, in-memory DB, NoSQL and distributed DB (MongoDB, Hadoop, Spark...) and a (limited) introduction about Data Wrangling in Python.
• Introduction to Databases
  Relational Model, SQL, normalization, E-R, Concurrency, PL/SQL, Interactions between DBMS and applications.

Université Paris-Saclay
Bâtiment 650 (PCRI/S)
1, rue Raimond Castaing
91190 GIF-SUR-YVETTE
France

Office: PCRI/S 42
Tel: +33 169156402
email: