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Biplab Sikdar

3 accepted papers

2026

FED-GAME: PERSONALIZED FEDERATED LEARNING WITH GRAPH ATTENTION MIXTURE-OF-EXPERTS FOR TIME-SERIES FORECASTING

ICASSP 2026oral

Federated learning (FL) on graphs shows promise for distributed time-series forecasting. Yet, existing methods rely on static topologies and struggle with client heterogeneity. We propose Fed-GAME, a framework that models personalized aggregation as message passing over a learnable dynamic implicit…

Cited by 0SourcePDFScholar
2026

When Smiley Turns Hostile: Interpreting How Emojis Trigger LLMs’ Toxicity

AAAI 2026technical

Emojis are globally used non-verbal cues in digital communication, and extensive research has examined how large language models (LLMs) understand and utilize emojis across contexts. While usually associated with friendliness or playfulness, it is observed that emojis may trigger toxic content gener

Cited by 0SourcePDFScholar
2025

UIBDiffusion: Universal Imperceptible Backdoor Attack for Diffusion Models

CVPR 2025highlight

Recent studies show that diffusion models (DMs) are vulnerable to backdoor attacks. Existing backdoor attacks impose unconcealed triggers (e.g., a gray box and eyeglasses) that contain evident patterns, rendering remarkable attack effects yet easy detection upon human inspection and defensive algori…