BEGIN:VCALENDAR VERSION:2.0 PRODID:-//wp-events-plugin.com//7.4.0.1//EN TZID:Europe/Paris X-WR-TIMEZONE:Europe/Paris BEGIN:VEVENT UID:354@isdm.umontpellier.fr DTSTART;TZID=Europe/Paris:20250516T140000 DTEND;TZID=Europe/Paris:20250516T140000 DTSTAMP:20260828T093800Z URL:https://isdm.umontpellier.fr/events/unified-breakdown-analysis-for-byz antine-robust-gossip-3/ SUMMARY:Unified Breakdown Analysis for Byzantine Robust Gossip DESCRIPTION:Room 02.249\, Building 5\, St Priest campus\n\nMachine Learning in Montpellier\, Theory &\; Practice - Hadrien Hendrikx (Inria)\n\nIn decentralized machine learning\, different devices communicate in a peer-t o-peer manner to collaboratively learn from each other'\;s data. Such approaches are vulnerable to misbehaving (or Byzantine) devices. We introd uce F-RG\, a general framework for building robust decentralized algorithm s with guarantees arising from robust-sum-like aggregation rules F. We the n investigate the notion of breakdown point\, and show an upper bound on t he number of adversaries that decentralized algorithms can tolerate. We in troduce a practical robust aggregation rule\, coined CSours\, such that CS ours-RG has a near-optimal breakdown. Other choices of aggregation rules l ead to existing algorithms such as ClippedGossip or NNA. We give experimen tal evidence to validate the effectiveness of CSours-RG and highlight the gap with NNA\, in particular against a novel attack tailored to decentrali zed communications\n\nMachine Learning in Montpellier\, Theory &\; Prac tice ATTACH;FMTTYPE=image/jpeg:https://isdm.umontpellier.fr/wp-content/uploads/ 2026/06/ml-mtp-gC78d5.png CATEGORIES:ML MTP LOCATION:Room 02.249 Building 5\, St Priest campus\, Montpellier\, 34000\, France X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=St Priest campus\, Montpell ier\, 34000\, France;X-APPLE-RADIUS=100;X-TITLE=Room 02.249 Building 5:geo :0,0 END:VEVENT BEGIN:VTIMEZONE TZID:Europe/Paris X-LIC-LOCATION:Europe/Paris BEGIN:DAYLIGHT DTSTART:20250330T030000 TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST END:DAYLIGHT END:VTIMEZONE END:VCALENDAR