Presentation JRC Workshop on Disinformation - Dec 2019
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This document summarizes tools and algorithms developed by the WeVerify project for verifying online content, including rumour analysis, meme and advert optical character recognition, disinformation spread analysis, and a database of known fakes. It describes the WeVerify content verification plugin for browsers, which includes image and video verification algorithms. The document also demonstrates social network analysis and visualization tools for mapping how disinformation spreads within social networks and specific communities over time.
Presentation JRC Workshop on Disinformation - Dec 2019
- 1. Wider and Enhanced Verification for You Carolina Scarton, Kalina Bontcheva University of Sheffield C.Scarton@sheffield.ac.uk, K.Bontcheva@sheffield.ac.uk @carolscarton, @kbontcheva JRC Workshop, Varese Italy, 8th December 2019 1
- 2. WeVerify Tools and Algorithms ➢ Rumour Analysis ➢ Meme and advert OCR ➢ TrulyMedia & TruthNest • The following SOMA presentation ➢ WeVerify/InVid content verification plugin • Includes image and video verification algorithms ➢ Disinformation Spread Analysis ➢ Database of “Known Fakes” 2
- 3. Verifying Rumours and Analysing Conversational Threads ➢ Rumour is “a circulating story of questionable veracity, which is apparently credible but hard to verify, and produces sufficient skepticism and/or anxiety” ➢ Key is not only whether it is true or false, but also: • Who is spreading it? • Are people believing it? • Rumour stance: support, deny, question, comment • Do we need to debunk it or not? ➢ Assist journalists through automated analysis embedded in a user-friendly tool ➢ The tool is undergoing testing, to be integrated within the Browser Plugin 3
- 4. Verifying Rumours and Analysing Conversational Threads 4 https://twitter.com/emmanuelmacron/status/1164617008962527232
- 5. Verifying Rumours and Analysing Conversational Threads 5 Try it with: 1. https://twitter.com/emmanuelmacron/status/1164617008962527232 2. https://twitter.com/DavidJHarrisJr/status/1059908006043967492 https://tweetveracity.gate.ac.uk/
- 6. Verifying Rumours: Demo Example 6
- 7. Verifying Rumours and Analysing Conversational Threads (1) 7
- 8. Verifying Rumours and Analysing Conversational Threads (2) 8
- 9. Analysing Memes and Adverts: Example Ad 9 Settings: Convert to grayscale and Invert; Post-processing: rmgarbage plus http://demos.gate.ac.uk/weverify/ocr/
- 10. Rumour Veracity and Stance as a Service 10 https://cloud.gate.ac.uk
- 12. Chrome/Firefox Verification Plugin: Demo videos ➢ Analyse Facebook, Twitter, or YouTube Videos (demo): https://www.youtube.com/watch?v=eEVTYq1LMxM ➢ Analysing keyframes in videos (demo): https://youtu.be/iNs8y5DoxP8 ➢ Analyse YouTube video thumbnails (demo): https://youtu.be/Vn0XGlOkSRQ ➢ Searching for past tweets and other advanced features (demo): https://youtu.be/wzMCtpENuHA ➢ Image Magnifier: https://youtu.be/JljRs8p4aK4 ➢ Image Metadata Analyzer + Geolocation (demo): https://youtu.be/Mg6Z-Jc54yo ➢ Image and Video Forensics (demo): https://youtu.be/de862rAPne4 ➢ Other demos and tutorials: See Tutorial tab in the plugin 12
- 13. New: Twitter Social Network Analysis 13
- 14. New: Twitter Social Network Analysis (2) 14
- 15. New: Twitter Social Network Analysis (3) 15
- 16. Analysing Disinformation Spread with SNA ➢ Social Network analysis investigates how information spreads into information systems ➢ Social Network Analysis is used to: • Understand how misinformation is spreading within particular groups • Combined with other digital verification techniques, Social Network analysis can supply evidence: • Existence of astroturfing operations; • Influence of particular social groups • Support decision to proceed to fact-checking • if disinfo only spread by a small groups with no influence, no need to debunk? • Currently requires use of highly complex, general tools like Gephi 16
- 17. Suavelos: WeVerify SNA Visualisation Tool The SNA demo: http://networkx.iti.gr/network/ results/646e2023fbacfb2943267 792d6c313ed00dab114/ Suavelos Study (Le Monde) https://www.disinfo.eu/2019/0 9/11/suavelos-white-supremaci sts-funded-through-facebook/ 17
- 18. Suavelos: Focusing on a Specific Community 18
- 19. Suavelos: Mapping Interactions over Time 19
- 20. 20 Disinformation Repurposes Content Credit: Denis Teyssou (AFP)
- 21. 21 Google getting confused Database of Known Fakes can help!
- 22. Database of Known Fakes: Overview 22
- 24. DBKF: Decontextualised Image - the AFP debunk 24
- 25. Project Contacts 25 • Dr. Milena Yankova-Doseva Project Coordinator, Ontotext AD email:milena.yankova@ontotext.com • Zlatina Marinova Administrative Coordinator, Ontotext AD email: zlatina.marinova@ontotext.com • Prof. Kalina Bontcheva Scientific Director, University of Sheffield email: k.bontcheva@sheffield.ac.uk • • Nikos Sarris Exploitation Director, ATC email: n.sarris@atc.gr • Denis Teyssou Innovation Manager, AFP email: denis.teyssou@afp.com • Jochen Spangenberg Dissemination Lead, DW email: jochen.spangenberg@dw.com •
- 26. Thank you for your attention! 26 www.weverify.eu https://twitter.com/WeVerify