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cs.CL2025
Distributional Semantics Tracing: A Framework for Explaining Hallucinations in Large Language Models
Gagan Bhatia, Somayajulu G Sripada, Kevin Allan +1
Hallucinations in large language models (LLMs) produce fluent continuations that are not supported by the prompt, especially under minimal contextual cues and ambiguity. We introdu…
cs.CV2025
Leveraging Vision-Language Pre-training for Human Activity Recognition in Still Images
Cristina Mahanta, Gagan Bhatia
Recognising human activity in a single photo enables indexing, safety and assistive applications, yet lacks motion cues. Using 285 MSCOCO images labelled as walking, running, sitti…
cs.CL2025
Date Fragments: A Hidden Bottleneck of Tokenization for Temporal Reasoning
Gagan Bhatia, Maxime Peyrard, Wei Zhao
Modern BPE tokenizers often split calendar dates into meaningless fragments, e.g., 20250312 202, 503, 12, inflating token counts and obscuring the inherent structure…