Sebastian Sabry

sebastian.sabry@mila.quebec

Maîtrise recherche - McGill University

Alumni

Superviseur⋅e principal⋅e

Reihaneh Rabbany

Sujets de recherche

Apprentissage des graphes temporels

Réseaux de neurones en graphes

GitHub

Publications

CrediBench: Building Web-Scale Network Datasets for Information Integrity

James Zhou

Jean-François Godbout

Michael M. Bronstein

Reihaneh Rabbany

Shenyang Huang

Online misinformation poses an escalating threat, amplified by the Internet's open nature and increasingly capable LLMs that generate persua… (voir plus)sive yet deceptive content. Existing misinformation detection methods typically focus on either textual content or network structure in isolation, failing to leverage the rich, dynamic interplay between website content and hyperlink relationships that characterizes real-world misinformation ecosystems. We introduce CrediBench: a large-scale data processing pipeline for constructing temporal web graphs that jointly model textual content and hyperlink structure for misinformation detection. Unlike prior work, our approach captures the dynamic evolution of general misinformation domains, including changes in both content and inter-site references over time. Our processed one-month snapshot extracted from the Common Crawl archive in December 2024 contains 45 million nodes and 1 billion edges, representing the largest web graph dataset made publicly available for misinformation research to date. From our experiments on this graph snapshot, we demonstrate the strength of both structural and webpage content signals for learning credibility scores, which measure source reliability. The pipeline and experimentation code are all available here, and the dataset is in this folder.

2026-08-07

ACM SIGKDD Conference on Knowledge Discovery and Data Mining (publié)

doi.org

openreview.net

From Claims to Context: Holistic Information Verification Requires Contextual Signals

Michael Bronstein

Jean-François Godbout