I am Associate Professor of Computer Science and Director of International Relations at the École Nationale Supérieure d'Informatique pour l'Industrie et l'Entreprise (ENSIIE). I am part of the ACMES team at the SAMOVAR laboratory, Télécom SudParis/Institut Polytechnique de Paris and Guest Lecturer at Université de Versailles Saint-Quentin-en-Yvelines.
My research focuses on formal methods for the design, analysis, and verification of (graph) database algorithms and applications.
I am Principal Investigator of the ANR VERDI project (2025–2029), Verified Foundations of Large-Scale Distributed Graph Systems, aiming to develop formally verified graph data structures for distributed systems, with collaborators from RPTU Kaiserslautern, Vrije Universiteit Brussel, Delft University of Technology, and NOVA University Lisbon.
In 2025, I was a Visiting Fellow at Inria Paris, as part of an ongoing collaboration in the ERC Synergy MALINCA project, which aims to bridge informal mathematical reasoning and machine-checked proofs.
Earlier in my academic career, I held postdoctoral research positions at Inria Rennes and at Université Claude Bernard Lyon 1, after completing my PhD at Université Paris-Saclay.
I have also contributed to the Property Graph Schema Working Group and the European Research Network on Formal Proofs.
🗓️ For online meetings, you can schedule a slot. Please email first if we do not know each other.
News
- Happy to be an invited participant at the Prospects of Formal Mathematics: New Directions workshop, Hausdorff Research Institute for Mathematics, in Bonn.
- Program co-chair of the 20th International Conference on Graph Transformation (ICGT 2027), part of Software Technologies: Applications and Foundations (STAF 2027) in Pisa, July 2027.
- Invited participant: Dagstuhl Seminar 27232 Abstractions for Composable Data-Intensive Cloud Systems, June 2027.
- Ravie d'être vice-présidente des Journées Francophones des Langages Applicatifs (JFLA 2027), à Dinard, Janvier 2027.
- Happy to be an invited speaker at AI for Future Energy Systems - 22nd IEEE ICCP International Conference on Intelligent Computer Communication and Processing in Cluj-Napoca, October 2026.
- Co-Chair of the VLDB 2026 Demonstration Track in Boston, September 2026.
- Very excited to give a keynote talk at Declarative AI 2026 Rules, Reasoning, Decisions, and Explanations, hosted in Vilnius, 24-30 August 2026. Ačiū!
- As of July 2026, I have been promoted Associate Editor of the Transactions on Graph Data and Knowledge journal.
- Co-Chair the 9th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) & Network Data Analytics (NDA) @ SIGMOD/PODS 2026 in Bengaluru, June 2026.
- Co-Chair of the 17th International Workshop on Graph Computation Models (GCM) co-located with STAF 2026 and ICGT 2026 in Rennes, June 2026.
- Co-Chair of the ICWE 2026 Workshop Track in Lyon, June 2026.
- Delighted to be an invited speaker at the 14th Logic Mentoring Workshop co-located with the 33rd EACSL Computer Science Logic Conference in Paris, February 2026.
- Had a lot of fun giving a guest lecture at TU Wien on Perspectives on Reliable Collaboration over Graph Data at Scale and visiting the DMKI lab, 9-14 February 2026.
- The Transforming Graph Data Workshop will be co-located with EDBT/ICDT 2026!
Submission deadline: January 30th, 2026. - Property Graph Standards: State of the Art & Open Challenges tutorial at VLDB 2025.
- Excited to be an invited lecturer at the ACM Europe Summer School on Data Science
- 🏆 EASST Best Software Science Paper Award at ICGT 2025: "Fuzzing Graph Database Applications with Graph Transformations" together with Melchior Oudemans and Burcu Kulahcioglu Ozkan.
- 🏆 SIGMOD 2025 Distinguished Reviewer.
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- Presenting Fuzzing Graph Database Applications with Graph Transformations at ICGT 2025, 11-12 June.
- 🏆 ICDE 2025 Best Program Committee Member Award.
- Member of the Review Board of the ACM Transactions on Database Systems (TODS).
- Invited participant: Dagstuhl Seminar 25171 "Holistic Graph-Processing Systems: Enabling Real-World Scale and Societal Impact", 21-25 April 2025.
- Guest Editor of the TGDK Special Issue on Data Management for (Knowledge) Graphs.
Submission deadline: July 1st, 2025. - Looking forward to giving a keynote talk at the 30th edition of the FAC days (Journées Formalisation des Activités Concurrentes) in Toulouse, on Reliable Graph Data Processing at Scale: Challenges and Opportunities, April 2nd, 2025.
- Presenting Progressive Querying on Property Graphs at EDBT/ICDT 2025, on March 26th, 2025.
- 🏆 EDBT 2025 Honorable Mention Reviewer.
- 🚀 The ANR JCJC VERDI "Verified Foundations of Large-Scale Distributed Graph Systems" (2025-2029) is funded!
Interested in a Ph.D. on this topic @ IP Paris' doctoral school? You can email me! - Co-organizing the VLDB Summer School 2025 in Wroclaw, Poland! Registration is open until April 21st, 2025.
- Co-organising the 8th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA) @ SIGMOD/PODS 2025!
- Co-organising the 1st Workshop on Transforming Graph Data (TGD) - recently accepted @ EDBT 2025!
- Publicity Chair for EDBT/ICDT 2026! Follow us on LinkedIn, BlueSky, and X and submit your best works!
- Publicity Chair for ICDE 2025! Follow us on LinkedIn and X and consider contributing! Deadlines: 25/11/24 (research, industry, application papers) - 06/12/24 (Data Engineering Future Technologies).
- Co-organising the VLDB Summer School in Cluj, Romania, 23-26th July 2024. Previous edition: here.
- Thrilled to join the Prospects of Formal Mathematics Trimester at HIM Bonn, June-July 2024.
- Happy to be invited speaker at the MaDICS Symposium, 30 May 2024.
- Invited participant: Dagstuhl Seminar 24102 "Shapes in Graph Data: Theory and Implementation".
- Invited participant: Dagstuhl Seminar 23441 "Ensuring the Reliability and Robustness of DBMSs".
- Invited participant: Dagstuhl Seminar 23401
"Automated mathematics: integrating proofs, algorithms & data". - 🏆 SIGMOD Best Paper Award 2023: PG-Schema: Schemas for Property Graphs.
- 🏆 SIGMOD Research Highlight Award 2023: Threshold Queries.
- 🏆 VLDB 2022: Best Regular Research Paper Runner-Up for Threshold Queries in Theory and in the Wild.
- As of 2023, I'm a member of the editoral board of the Transactions on Graph Data and Knowledge journal.
- In 2026, I'm in the PC of VLDB, SIGMOD, and EDBT.
- In 2025, I'm in the PC of VLDB, SIGMOD, ICDE, EDBT, DBTest, DOLAP, and RuleML+RR.
- In 2024, I was in the PC of VLDB, SIGMOD, WWW (Graph Algorithm and Modeling for the Web Track), ICDE (Demo Track), DOLAP, SEA Graph, CIKM, and DEBS PhD Workshop Co-chair.
- In 2023, I was in the PC of NeurIPS GLFrontiers, VLDB, ICDE, WWW, EDBT, CIKM, WSDM, JFLA, BDA, FRCCS.
- In 2022, I was in the PC of ICDE, WWW, CIKM, SIGMOD, MEDI, JFLA, DBTest, SBLP.
- In 2021, I was in the PC of: EDBT (CfP), SIGMOD Demo (CfP), MEDI (CfP), POPL AE (CfP), PLDI AE (CfP), GRADES-NDA@SIGMOD (CfP), PxTP-7@CADE (CfP), PPDP (CfP), SBLP (CfP), SFDI@VLDB (CfP). Previously.
- 🏆 D4Gen Hackathon: 3rd prize as expert accompanying the PANORAMA project.
- Invited participant: Dagstuhl Seminar 21442 "Ensuring the Reliability and Robustness of DBMSs".
- [23/06/21] Presentation of the PG-Keys article at SIGMOD 2021.
- The vision article on the future of graph processing systems, written together with fellow Dagstuhl Seminar 19491 participants, got accepted to the Communications of the ACM Journal!
You can read it here. - Invited seminar at the IMDEA Institute on the mechanically verified VerDILog graph query engine.
- Presentation of the GRASP tool for approximate querying on graph summaries at SUM.
- Invited participant: Dagstuhl Seminar 19491 "Big Graph Processing Systems".
Research Topics
- Graph data models and constraints.
Property graph modeling, schema inference and evolution, constraint processing. - Graph query languages.
Declarative query languages, progressive and approximate query evaluation, and graph summarization. - Database correctness and formal methods.
Formal specification and verification of database algorithms, engines, and applications. - Distributed and collaborative data.
Replicated graph data structures, consistency, and concurrency.
Publications
- Book Chapters
- Graph Summarization ,
with A.Bonifati, H.Kondylakis, Encyclopedia of Big Data Technologies'23
- Graph Summarization ,
- International Journals
- Data Management for (Knowledge) Graphs,
with G. Fletcher, M. Lissandrini, R. Tommasini, TGDK 4(2): 1:1–1:2 (2026). BibTeX ↓ - How Human-Centric Are Our Graph Data Abstractions?,
with A. Bonifati, A. Dimou, G. Fletcher, K. Hose, G. Konstantinidis, J. E. Labra Gayo, W. Martens, N. Pardal, L. Peterfreund, K. Thornton, M.-E. Vidal, H. Voigt, TGDK 4(2): 2:1–2:31 (2026). BibTeX ↓ - Property Graph Standards: State of the Art & Open Challenges,
with H. Kondylakis, M. Lissandrini, N. Yakovets, A. Bonifati, V. Efthymiou, G. Fletcher, D. Plexousakis, R. Tommasini, G. Troullinou, E. Ymeralli, Proc. VLDB Endow. 18(12): 5477–5481 (2025). BibTeX ↓ - Technical Perspective: Implementing Views for Property Graphs,
by S. Dumbrava, SIGMOD Record 54(1): 58 (2025). BibTeX ↓ - Understanding Student Errors in Graph Query Formulation,
with A. Pachera, A. Bonifati, A. Mauri, ACM Trans. Comput. Educ. 25(3): 1–35 (2025). BibTeX ↓ - Threshold queries in theory and in the wild,
with A. Bonifati, G. Fletcher, J. Hidders, M. Hofer, W. Martens, F. Murlak, J. Shinavier, S. Staworko, D. Tomaszuk, VLDB Journal 34(4): article 49 (2025). BibTeX ↓ - PG-Schema: Schemas for Property Graphs ,
with R. Angles, A. Bonifati, G. Fletcher, A. Green, J. Hidders, B. Li, L. Libkin, V. Marsault, W. Martens, F. Murlak, S. Plantikow, O. Savkovic, M. Schmidt, J. Sequeda, S. Staworko, D. Tomaszuk, H. Voigt, D. Vrgoc, M. Wu, and D. Zivkovic, Proc. ACM Manag. Data 1(2): 198:1-198:25 (2023) - How Does Knowledge Evolve in Open Knowledge Graphs?,
with A. Polleres, R. Pernisch, A. Bonifati, D. Dell'Aglio, D. Dobriy, L. Etcheverry, N. Ferranti, K. Hose, E. Jiménez-Ruiz, M. Lissandrini, A. Scherp, R. Tommasini, J. Wachs
TGDK 1(1): 11:1-11:59, 2023 - Knowledge Graph Embeddings: Open Challenges and Opportunities,
with R. Biswas, L. Kaffee, M. Cochez, T. Jendal, M. Lissandrini, V. López, E. Mencía, H. Paulheim, H. Sack, E. Vakaj, G. Melo, TGDK 1(1): 4:1-4:32, 2023 - Threshold Queries,
with A.Bonifati, G.Fletcher, J.Hidders, M.Hofer, W.Martens, F.Murlak, J.Shinavier, S.Staworko, D.Tomaszuk,
Sigmod Record '23 (Invited Paper) - Threshold Queries in Theory and in the Wild,
with A.Bonifati, G.Fletcher, J.Hidders, M.Hofer, W.Martens, F.Murlak, J.Shinavier, S.Staworko, D.Tomaszuk,
Proc. of VLDB Endowment'22 - The Future is Big Graphs! A Community View on Graph Processing Systems,
with S.Sakr, A.Bonifati, A.Iosup, H.Voigt, and participants of the Dagstuhl Seminar 19491,
Communications of the ACM'21 - Graph Queries: From Theory to Practice ,
with A.Bonifati, ACM Sigmod Record'18, vol. 47, Nº 4: 5-16.
DB Principles Column (Invited Paper) - Certified Graph View Maintenance with Regular Datalog ,
with A.Bonifati and E.J.Gallego Arias,
Theory and Practice of Logic Programming Journal, TPLP'18, vol. 18, Nº 3-4: 372-389;
presented at the 34th International Conference on Logic Programming, ICLP@FLoC'18, Oxford, UK. BibTeX ↓Code
- Data Management for (Knowledge) Graphs,
- International Conferences (Regular Papers)
- Fuzzing Graph Database Applications with Graph Transformations,
with M. W. M. Oudemans, B. Kulahcioglu Ozkan, ICGT 2025: 135–156. BibTeX ↓ - Progressive Querying on Knowledge Graphs,
with A.Bonifati, H.Kondylakis, G.Troullinou, G. Vassiliou, EDBT'25, Barcelona, Spain. BibTeX ↓ - Checking Transaction Isolation Violations Using Graph Queries,
with Z.Jin, B.K. Ozkan, J. Qiu, ICGT'24, Twente, Netherlands. - PG-Keys: Keys for Property Graphs ,
with members of the Property Graph Schema Working Group, SIGMOD'21, Xi'an, Shaanxi, China. - Approximate Querying on Property Graphs,
with A.Bonifati, A. Nazabal and R. Vuillemot,
Scalable Uncertainty Management, SUM'19, Compiègne, France. - Certifying Standard and Stratified Datalog Inference Engines in SSReflect,
with V.Benzaken and E.Contejean,
Interactive Theorem Proving, ITP'17, Brasilia, Brazil: 171 - 188, LNCS 10499.
DatalogCert Code - A Coq Formalization of the Relational Data Model ,
with V.Benzaken and E.Contejean,
European Symposium on Programming, ESOP'14, Grenoble, France: 189 - 208, LNCS 8410. BibTeX ↓
- Fuzzing Graph Database Applications with Graph Transformations,
- International Conferences (Short Papers)
- A Flexible GraphQL Northbound API for Intent-based SDN Applications,
with F.Bannour, D.Lu,
IEEE/IFIP Network Operations and Management Symposium, NOMS'22, Budapest, Hungary. - Hierarchical Clustering for Property Graph Schema Discovery,
with A.Bonifati, N.Mir,
Extending Database Technology, EDBT'22, Edinburgh/Virtual, UK.
- A Flexible GraphQL Northbound API for Intent-based SDN Applications,
- International Workshops
- Towards Local-First Distributed Property Graphs,
with A. Pandey, M. Shapiro, C. Ferreira, M. Pereira, N. M. Preguiça, PaPoC@EuroSys 2025: 22–29. BibTeX ↓ - Eighth Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA),
with A. Arora, SIGMOD Conference Companion 2025: 864–865. BibTeX ↓ - Ninth Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA),
with A. Arora, SIGMOD Companion 2026: 588–589. BibTeX ↓ - Integrating Complex Pangenome Graphs,
with J. Arnoux, A. Bonifati, A.Calteau, G.Gautreau,
SEAGraph@ICDE'24, Enschede, NL: 350-354. BibTeX ↓ - A graph-database approach to assess the impact of demand-responsive services on public transit accessibility,
with C. Le Hasif, A. Araldo, D. Watel,
IWCTS@SIGSPATIAL'22, Seattle, US: 2:1-2:4. BibTeX ↓ - A Case Study on Formalizing Algebra in a Module System ,
with F.Horozal and K.Sojakova,
Modules and Libraries for Proof Assistants, MLPA'09, Montreal, Canada: 11 - 18, ACM 429.
- Towards Local-First Distributed Property Graphs,
- Demo Papers
- GRAIL: Checking Transaction Isolation Violations with Graph Queries,
with Z. Jin, B.K. Ozkan, J. Qiu
International Conference on Software Engineering, ICSE'24, Lisbon, Portugal - PING: Progressive Querying on RDF Graphs,
with A. Bonifati, H. Kondylakis, G. Troullinou, G. Vassiliou,
International Semantic Web Conference, ISWC'23, Athens, Greece - DiscoPG: Property Graph Schema Discovery and Exploration,
with A.Bonifati, E.Martinez, F.Ghasemi, M.Jaffre, P.Luton, T.Pickles,
International Conference on Very Large Databases, VLDB'22, Sydney, Australia - GOX: Towards a Scalable Graph Database-Driven SDN Controller,
with F.Bannour and Alex Danduran-Lembezat,
International Conference on Network Softwarization, NetSoft'22, Milan, Italy
- GRAIL: Checking Transaction Isolation Violations with Graph Queries,
- Data and Research Artifacts
- Threshold queries in Python,
with A. Bonifati, G. Fletcher, J. Hidders, M. Hofer, W. Martens, F. Murlak, J. Shinavier, S. Staworko, D. Tomaszuk, Zenodo (2021). BibTeX ↓
- Threshold queries in Python,
- Edited Proceedings
- Proceedings of the 8th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA),
with A. Arora (editors), ACM (2025), ISBN 979-8-4007-1923-3. BibTeX ↓
- Proceedings of the 8th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA),
- Teaching Materials (Published)
- Graph Databases: Foundations and Data Science Applications: Course 1,
by S. Dumbrava, ACM Europe Summer School 2025: 2. BibTeX ↓ - Graph Databases: Foundations and Data Science Applications: Course 2,
by S. Dumbrava, ACM Europe Summer School 2025: 3. BibTeX ↓ - Hands on Session: Lab Session 1,
by S. Dumbrava, ACM Europe Summer School 2025: 4. BibTeX ↓ - Hands on Session: Lab Session 2,
by S. Dumbrava, ACM Europe Summer School 2025: 5. BibTeX ↓
- Graph Databases: Foundations and Data Science Applications: Course 1,
- National Conferences
- Une formalisation en Coq du modèle relationnel de données ,
with V.Benzaken and E.Contejean,
Actes des Septièmes Journées Nationales GDR-GPL'15 (Invited Paper), Bordeaux, France: 83 - 86.
- Une formalisation en Coq du modèle relationnel de données ,
- Preprints
- Expressive Power of Property Graph Constraint Languages,
with N. Francis, V. Marsault, S. Sailly, CoRR abs-2603-09806 (2026). BibTeX ↓ - Edge-Oriented Orchestration of Energy Services Using Graph-Driven Swarm Intelligence,
with L. Toderean, D. Lazea, V. Ofrim, A. Hangan, T. Cioara, CoRR abs-2604-04645 (2026). BibTeX ↓ - A Datalog Framework for Conflict-Free Replicated Data Types,
with E. Yanakieva, A. Bieniusa, CoRR abs-2605-31569 (2026). BibTeX ↓ - Transformations for Evolving Property Graph Schemas,
with G. Devillez, A. Bonifati, CoRR abs-2609-34789 (2026). BibTeX ↓ - Approximate Evaluation of Label-Constrained Reachability Queries,
with A.Bonifati, A. Nazabal Ruiz-Diaz, and R.Vuillemont.
- Expressive Power of Property Graph Constraint Languages,
- Manuscripts
- A Coq Formalization of Relational and Deductive Databases - and Mechanization of Datalog,
PhD Thesis, Université Paris-Sud, Defended: 02/12/2016 - A Type Theory with Reflection,
MSc Thesis, Jacobs University Bremen, 2012 - Structured Specification with Hiding in the Edinburgh Logical Framework LF,
BSc Thesis, Jacobs University Bremen, 2010
- A Coq Formalization of Relational and Deductive Databases - and Mechanization of Datalog,
- Software
- GRASP (with A. Bonifati, A. Nazabal, R. Vuillemot):
approximate evaluation of count queries on summaries of property graphs - VerDILog (with A. Bonifati and E. J. Gallego Arias):
certified, incremental graph view evaluation & maintenance for regular Datalog - DatalogCert (PhD supervisors: V. Benzaken and E. Contejean):
certified evaluation engines for standard and stratified Datalog
- GRASP (with A. Bonifati, A. Nazabal, R. Vuillemot):
Student Supervision
- PhD students
- Liam Graslin.
Université de Lorraine.
Decentralized Data Sharing with Hybrid Graph-Relational Views.
With Claudia Ignat (LORIA). - Oscar Cornejo Guillen.
Université Paris-Saclay.
Vers un méta-modèle unificateur pour le liage conceptuel des DataFrames.
With Zoubida Kedad (UVSQ) and Francesca Bugiotti (Centrale Supéléc). - Gabriele Pedroni.
Institut Polytechnique de Paris.
Neuro-symbolic reasoning over knowledge graphs for anomaly detection and fault diagnosis in the automotive domain.
With Amel Mammar (Télécom SudParis) and Saina Harssand (Renault Group). - Steven Sailly.
Institut Polytechnique de Paris.
Formal foundations and techniques for reliable graph data processing at scale.
With Nadime Francis and Victor Marsault (Université Gustave Eiffel). - Elisjana Ymeralli.
University of Crete.
Reliability-preserving graph partitioning.
With Haridimos Kondylakis and Dimitris Plexousakis (FORTH-ICS). - Nicolás Van Sint Jan.
Université Paris Cité.
Languages for property graph analytics.
With Cristina Sirangelo and Leonid Libkin (Université Paris Cité). - Elena Yanakieva.
RPTU University of Kaiserslautern-Landau.
With Annette Bieniusa (RPTU University of Kaiserslautern-Landau).
- Liam Graslin.
- Master's theses
- Michael Landgraf (2025–2026), RPTU Kaiserslautern.
With Annette Bieniusa. - Daniel Goossens (2025–2026), Eindhoven University of Technology.
With Nikolay Yakovets. - Melchior Oudemans (2024-2025), Delft University of Technology. Coverage-Guided Testing of Graph Processing Applications.
With Burcu Kulahcioglu Ozkan. - Jingxuan (Jason) Qiu (2023-2024), Delft University of Technology. Checking Distributed Database Isolation.
With Burcu Kulahcioglu Ozkan. - Luis Almas (2023-2024), NOVA University Lisbon. Replicated Data Types for Graph Databases.
With Carla Ferreira and Mário Pereira.
- Michael Landgraf (2025–2026), RPTU Kaiserslautern.
- Research internships
- Zhao Jin (2024), UVSQ. Reliable Graph Query Processing.
With Zoubida Kedad (UVSQ). - Abdellah Oumida (2024), CentraleSupélec. Intégration de données hétérogènes.
With Francesca Bugiotti (LISN). - Hugo Pereira (2024), ENSIIE. Declarative Replicated Data Types for Distributed Property Graphs.
- Léo Capes (2024-2025), ENSIIE. Analyzing Collaboration Patterns with Graph Databases (M1) and Efficient State-Based Replicated Data Types for Distributed Property Graphs (L3).
- Titouan Choaler (2024), ENSIIE. Efficient Operation-Based Replicated Data Types for Distributed Property Graphs.
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- Nathan Pollart (2023), ENSIIE. A Verified CRDT Structure for Property Graphs.
- Matthias Moyon (2023), ENSIIE. An OCaml Library for Hypergraphs.
- Loïc Lefée-Fauvel (2023), ENSIIE. A Graph Database of Formalized Algebra Libraries.
- Cathia Le Hasif (2022), Université d'Évry. A graph-database approach to assess the impact of demand-responsive services on public transit accessibility.
With Andrea Araldo (Télécom SudParis) and Dimitri Watel (ENSIIE). - Zhao Jin (2022), ENSIIE. Checking Transaction Isolation Violations with Graph Queries.
With Burcu Kulahcioglu Ozkan (TU Delft). - Quelen Cartellier (2022), ENSIIE. Towards the Automated Verification of a Subgraph Isomorphism Algorithm.
With Catherine Dubois (ENSIIE). - Aurélien Coreau (2022), ENSIIE. An OCaml Replicated Data Type for Distributed Property Graphs.
- Julie Eymery (2022), ENSIIE. Analyse de Graphes de Données Génomiques.
- Houda Aiboud-Benchekroun (2022), ENSIIE. A Network Slicing Application for the GOX Controller.
With Fetia Bannour (ENSIIE). - Ikrame Boulif (2022), ENSIIE. Scalable graph database abstractions for adaptive inter-controller communication in distributed SDN.
With Fetia Bannour (ENSIIE). - Alex Danduran-Lembezat (2021), ENSIIE. GOX: Towards a Scalable Graph Database-Driven SDN Controller.
With Fetia Bannour (ENSIIE). - Damien Lu (2021), ENSIIE. A Flexible GraphQL Northbound API for Intent-based SDN Applications.
With Fetia Bannour (ENSIIE). - Nicolas Mir (2021), ENSIIE. Hierarchical Clustering for Property Graph Schema Discovery.
With Angela Bonifati (Université Lyon 1). - Junah Le Piouff (2021), ENSIIE. Benchmarking the Energy Consumption of Graph Query Languages.
With Anne-Laure Ligozat (ENSIIE). - Mathis Martin (2021), ENSIIE. Benchmarking the Energy Consumption of Graph Database Systems.
With Anne-Laure Ligozat (ENSIIE). - Amaia Nazábal Ruiz Díaz (2018), Université Lyon 1. Approximate Query Processing on Property Graph Summaries.
With Angela Bonifati (Université Lyon 1).
- Zhao Jin (2024), UVSQ. Reliable Graph Query Processing.
Teaching
Taught courses at both undergraduate (L) and master's (M) level, as well as tutorials (TD) and practical sessions (TP). Teaching is in French unless otherwise indicated.
- ENSIIE - Associate Professor, since 2019
- Formal Languages and Software Verification (VVL) - M1 - course lead since 2019 - restarting October 2026. ✦Course materials✦
- Graph Databases (GDA) - M1 - course lead since 2022 - restarting February 2027.
- Functional Programming (IPF) - L3/M1, course lead until September 2025.
- Introduction to Databases (CBDR) - L3 - SQL tutorials and practicals, until September 2025.
- Imperative Programming (IPI) - L3 - C/C++ practicals, until September 2025.
- Web Programming (PWR) - L3 - PHP practicals, 2019-2020.
- Université Paris-Saclay - Guest Lecturer, 2021-2027
- Foundations of Query Languages - M2 DataScale (UVSQ), course lead since 2024 - restarting November 2026.
- Database Reliability and Safety - M2 DataScale (UVSQ), course lead until September 2024.
- Advanced Topics in Databases - M2 Data Science (Université d’Évry) - course lead until September 2025.
- Clustering Algorithms for Graph Data - M2 DataScale (UVSQ) - project course until September 2025.
- ENS de Lyon - Guest Lecturer, 2021-2022
- Schema Inference for Property Graphs - M1 - project course.
- Université Rennes 1 - Guest Lecturer, 2018-2019 (40 h)
- Introduction to Software Engineering (GEN) - L2 - Scala practicals.
- Université Claude Bernard Lyon 1 - Guest Lecturer - 2016-2018 (71 h)
- Université Paris-Saclay - ATER, 2015-2016 (95 h)
- Mathematics for Computer Science - L2 - C/C++ and Coq practicals (40 h).
- Introduction to Functional Programming - L2 - OCaml practicals (16 h).
- Advanced Functional Programming - L3 - OCaml practicals (39 h).
- IUT d’Orsay - Teaching Assistant, 2013-2015 (128 h)
- Database Programming and Administration - L1 - tutorials (63 h) and Oracle SQL practicals (32 h).
- Advanced Databases - L2 - Java/Oracle SQL practicals (32 h).
- Jacobs University Bremen - Teaching Assistant, 2008-2010
- Mathematics Support Center - L1-L3.
- General Mathematics and Computational Science - L1.
Activities
- Admission Exams:
- Concours Mines-Télécom: Examiner in the 2022-2025 editions.
- Thesis Committees:
- 2026: Gerard Pons Recasens.
Evolving knowledge graphs: continuous knowledge acquisition, adaptation, and exploitation.
Ph.D. Universitat Politècnica de Catalunya. 11/11/2026. Examiner. - 2026: Shwetha Salimath.
Cadres d’apprentissage profond conscients du domaine et efficients pour l'inférence stratigraphique automatisée.
Ph.D. Université Paris-Saclay. 10/09/2026. Examiner. - 2026: Sonia-Florina Horchidan.
Foundations of Trustworthy AI-Native Data Systems.
Ph.D. KTH Royal Institute of Technology. 15/06/2026. Examiner. - 2025: Ayush Pandey.
CALock: verrouillage topologique à granularité multiple de données hiérarchiques.
Ph.D. Sorbonne Université. 17/03/2025. Examiner. - 2025: Muhammad Ghufran Khan.
Interrogation efficace de graphes dynamiques provenant de sources multiples.
Ph.D. Institut Polytechnique de Paris. 18/09/2025. Examiner. - 2024: Luisa Werner.
Intégration neuro-symbolique de l'extraction de connaissances et du raisonnement sur les graphs.
Ph.D. Grenoble Alpes University. 11/12/2024. Examiner. - 2023: Amela Fejza.
Sur l'optimisation de l'énumération de plans récursifs avec une application aux requêtes de graphes de propriétés.
Ph.D. Grenoble Alpes University. 11/01/2023. Examiner. - 2022: Donato Tiano.
Learning Models on Healthcare Data with Quality Indicators.
Ph.D. Université Claude Bernard Lyon 1. 08/12/2022. Examiner. - 2022: Ousmane Issa.
Les réponses aux requêtes dirigées par la qualité et leur raffinement.
Ph.D. Clermont Ferrand University. 21/02/2022. Examiner. - 2021: Pierre-Léo Bégay.
Développement et certification en Coq/MathComp d'optimisations Datalog pour la vérification réseau.
Ph.D. Grenoble Alpes University. 23/11/2021. Examiner. - Award Committees:
- 2026 : Comité du Prix de thèse BDA (Bases de Données – Principes, Technologies et Applications).
Best PhD Thesis Award Committee of the BDA (French-speaking Data Management) Association. - Session Chairmanship:
- 2022: [29/04] Structured Learning Session @ The Web Conference
- 2021: [08/09] Applications Session 9 @ PPDP, [26/03] Graph Management Session 13 @ EDBT
- PC Member (before 2023):
- 2023
- VLDB International Conference (PVLDB Review Board Member Volume 16: April 2022 - March 2023)
- ICDE International Conference on Data Engineering
- The Web Conference
- EDBT International Conference - Regular Research Papers Track
- JFLA Journées Francophones des Langages Applicatifs
- WSDM International Conference
- 2022
- MEDI International Conference
- CIKM International Conference
- SIGMOD International Conference
- DBTest @ SIGMOD International Workshop
- ICDE International Conference on Data Engineering
- The Web Conference
- JFLA Journées Francophones des Langages Applicatifs
- BSPL Brasilian Symposium on Programming Languages
- 2021
- EDBT International Conference - Regular Research Papers Track
- PPDP International Symposium on Principles and Practice of Declarative Programming
- MEDI International Conference - Regular Research Papers Track
- PxTP International Workshop on Proof eXchange for Theorem Proving
- BSPL Brasilian Symposium on Programming Languages
- SIGMOD International Conference - Demo Track
- POPL International Conference - Artifact Evaluation Track
- PLDI International Conference - Artifact Evaluation Track
- GRADES-NDA @ SIGMOD International Workshop
- SFDI @ VLDB International Workshop
- 2020
- EDBT International Conference - Regular & Short Research Papers Tracks
- The Coq Workshop
- POPL International Conference - Artifact Evaluation Track
- Subreviewer:
PODS 2022, IJCAR 2020, TYPES 2019 , PODS 2019 , VLDB 2019 , VLDB 2018 , PODS 2017 , VLDB 2017 - Journal Review:
- Administrative Duties:
- DataScale Master (Univ. Paris-Saclay) Liaison Responsability.
- With Evelyne Contejean, I have coordinated the TransForm working group (Labex DigiCosme, 2019-2020).
- Scientific Board Membership (Commissions Consultatives de Spécialistes @Universite Paris-Saclay).
- Scientific Board Membership (Conseil Scientifique @ENSIIE, 2021 - 2026).
- Recruiting Committee Membership (Comité de Sélection) for Assistant Professor positions:
- 2025: Université Paris-Saclay (MCF 252332)
- 2025: INP Toulouse (MCF 250925)
- 2024: IRIT/Université Toulouse III Paul Sabatier (MCF 4880)
- 2023: IRIF/Université Paris Cité (MCF 334/335/336).
- 2023: IUT Bourg-en-Bresse/Université Lyon 1 (MCF 4708).
- 2023: LISN/Université Paris-Saclay (MCF 420).
- 2021: SAMOVAR/ENSIIE (MCF 522).
- Course Responsability: Advanced Databases (GDA) & Blockchain (BLK) courses @ENSIIE
- Elected member of the LRI laboratory council: 2014-2015
- Elected representative of the EDIPS Computer Science PhD Students: 2012-2014
- Student Member of the Organizing Committee: CICM 2012 , NWERC 2010 , ESSLLI 2009
- Outreach Involvement:
- Programme Mentorat Paris-Saclay "Women & Science" 2022
- SIGPLAN-M (Long-Term Mentor)
- Declics (Popularising CS topics to high-school students)
- Gender Parity in Academia (CGE Working Group).
- Mini Curriculum Vitae
- 2018 - 2019
I was a postdoctoral researcher in the INRIA team Celtique, at the IRISA laboratory, working with David Pichardie, in the context of his ERC Consolidator Grant VESTA (Verified Static Analysis Platform). - 2017 - 2018
I was a postdoctoral researcher at Université Lyon 1, where I collaborated with Angela Bonifati, in the context of the ANR DataCert project. - 2012 - 2016
I earned a PhD in Computer Science, at Université Paris-Sud, in the VALS team, at the LRI research laboratory, supervised by Véronique Benzaken and Evelyne Contejean. - 2007 - 2012
I studied at Jacobs University Bremen, where I obtained a BSc in Mathematics and a MSc in Computer Science. I was part of the KWARC team, working in the LATIN project, supervised by Florian Rabe and Michael Kohlhase . - I was born and grew up in Iași, Romania. During my junior and senior secondary education, I attended the Costache Negruzzi and, respectively, the Emil Racoviță National Colleges.
- 2018 - 2019
Talks
- 10/07/2024, Towards a Knowledge Graph of Formalized Mathematics,
Hausdorff Research Institute for Mathematics, Bonn, Germany - 30/05/2024, Property Graph Schema: Specification & Discovery,
MaDICS Symposium, Blois, France - 20/07/2022, Graph Query Processing Techniques,
NOVA University of Lisbon, Lisbon, Portugal - 09/06/2020, Mechanically Verified Graph Query Processing ,
IMDEA Software Institute , Madrid, Spain - 17/12/2019, Approximate Querying on Property Graphs , SUM International Conference , Compiègne, France
- 02/12/2019, Graph Query Processing Techniques , Dagstuhl Seminar: Big Graph Processing Systems , Dagstuhl, Germany
- 23/02/2019, Certified Graph Query Processing , EUTypes Workshop @ Lambda Days , Krakow, Poland
- 31/01/2019, Foundational Approaches to Graph Query Processing , LIMOS Seminar , University of Auvergne, Clermont-Ferrand, France
- 15/07/2018, Certified Graph View Maintenance with Regular Datalog , 34th International Conference on Logic Programming (ICLP) @ Federated Logic Conference (FLoC), University of Oxford, UK
- 18/06/2018, Certified Graph View Maintenance with Regular Datalog , Plume Seminar , Ecole Normale Supérieure Lyon, Lyon, France
- 14/11/2017, Certifying Deductive Database Engines with Coq/SSReflect , LFCS Seminar , University of Edinburgh, Edinburgh, United Kingdom
- 26/09/2017, Certifying Standard and Stratified Datalog Inference Engines in SSReflect , 8th International Conference on Interactive Theorem Proving (ITP) , University of Brasilia, Brasilia, Brazil
- 02/07/2014, Toward Data Intensive System Certification , DigiCosme Paris-Saclay Research Day , Orsay, France
- 22/01/2013, Certifying Data-Centric Languages and Systems , Programming Languages Mentoring Workshop (PLMW) @ Symposium on Principles of Programming Languages (POPL), Rome, Italy
- 01/07/2010, Structuring Theories with Partial Morphisms , 20th International Workshop on Algebraic Development Techniques (WADT), Schloss Etelsen, Germany
A Defense of Joy
by Mario Benedetti, translated by Maria Popova (The Marginalian)Defend joy like a trench
defend it from scandal and routine
from misery and misers
from truancies passing
and permanent
defend joy as a principle
defend it from bewilderments and bad dreams
from the neutral and the neutron
from sweet infamies
and grave diagnoses
defend joy like a flag
defend it from lightning and melancholy
from the fools and the frauds
from rhetoric and ruptures of the heart
from the endemic and the academic
defend joy as a destiny
defend it from fire and firefighters
from suicides and homicides
from vacations and ruts
from the obligation to be joyful
defend joy as a certainty
defend it from rust and smut
from the famous patina of time
from dew and exploitation
by the pimps of laughter
defend joy as a right
defend it from God and winter
from uppercase and the casket
from surnames and the pity
of chance
and of joy too.
