- Denis Teyssou (AFP): “A state of the art in journalism about fake image and video detection“
The presentation will review the tools currently used by the journalists community to detect fake images and videos, the current limits from a user point of view and will also introduce the work performed in the InVID (In Video Veritas) H2020 project.
Denis Teyssou is the head of Agence France Presse Medialab R&D since June 2007. Denis is a journalist with a background in informatics and innovation management (from CNAM institute in Paris). He has been participating in several FP7 and H2020 EU funded projects as well as French funded R&D projects, mainly from the National Research Agency (ANR). He is currently the innovation manager of the InVID European project about video verification on social networks. He is a member of the Global Alliance for Media Innovation launched by the World association of newspapers and publishers (WAN-IFRA).
- Emmanuelle Anceaume (CNRS/IRISA): “A primer on blockchain technology and the bitcoin cryptocurrency“
There is a lot of excitement about Bitcoin, the cryptocurrency system presented by Satoshi Nakamoto in 2008 in his white paper “Bitcoin: A Peer-to-Peer Electronic Cash System“, October 2008, http://nakamotoinstitute.org/bitcoin/“.
It seems that there is significant confusion about what Bitcoin is and how it works. During this talk, I will present the ingredients that makes Bitcoin what it is. How financial transactions are created ? How money is mint ? Why the blockchain is an immutable, unfalsifiable public ledger ? Why double spending attacks cannot happen in Bitcoin ? I will end this presentation by presenting some open problems. The blockchain is a shared object, and so far there is no agreement on the consistency properties and on the abstractions that fully capture the behavior of this shared object. Another still open question is whether one could replace computational puzzles by
some proof-of-useful work mechanisms without altering Bitcoin attractiveness.
Emmanuelle Anceaume received her PhD degree in Computer Science from the University (Paris XI) for her work on dependable systems. After that she spent one year at Cornell University (NY) to work on asynchronous algorithms. She then got a permanent position at CNRS / IRISA, and currently makes her research in the Cidre project team. Her main research interests focus on dependability, communication, reputation mechanisms, and more generaly on fault-tolerant distributed algorithms.