Selected talks and tutorials :

• "Retrieve (and Leverage) the Inner Graph Behind the Data", keynote at ISWC 2024
• "Full-Power Graph Querying: State of the Art and Challenges", tutorial with Madhulika Mohanty, at the VLDB Conference 2023
• "Data for the (Press) People: Helping Journalists Make Sense of Interesting Data", keynote at the Journées Annuelles du GDR CNRS RADIA (Reasoning, Data and AI) 2023
• "Understanding and Querying Data Regardless of the Data Model", tutorial at the first VLDB Summer School in Data Management, 2023
• "Teasing journalistic findings out of heterogeneous data soures: a data/AI journey", keynote at DEBS (Distributed Event-Based Systems) 2022
• "What do the Sources Say? Exploring Heterogeneous Journalistic Data As a Graph", keynote at DOLAP 2021
• "Integrating (Very) Heterogeneous Data Sources: A Structured and an Unstructured Perspective", keynote at ADBIS 2020
• Exploring RDF Graphs through Summarization and Analytic Query Discovery", keynote at DOLAP 2020
• "Journalistic Dataspaces: Data Management for Journalism and Fact-Checking", keynote talk at EDBT 2019.
• "Summarization of Semantic Graphs" keynote at ESWC 2018
• "Computational fact-checking: problems, state of the art and perspectives", keynote at BDA 2018 and EGC 2019.
• "Discovery in RDF Graphs", keynote at the DEXA Conference, Lyon, 2017.
• "Toward Analytics for RDF Graphs", invited talk at the Big Graph Analysis Systems workshop, Copenhagen, 2017.
• Reasoning on Web Data: Algorithms and Performance, tutorial at the ICDE 2015 (with D. Bursztyn, F. Goasdoué and A. Roatiș) (slides)
• "Cloud-based RDF Data Management", tutorial at the SIGMOD Conference 2014 (slides)
• "Fact-Checking the Web: Content Management Technologies for a Democratic Decision Process", tutorial at the Workshop on Open Data 2013 (slides: part 1, slides: part 2)