4 papers
Language Models Show Conformity Bias in RAG: When the Majority Endorses a Poisoned Claim
Mehrdad Ghassabi, Audrina Ebrahimi, Zahra Zojaji +1
Retrieval-augmented generation (RAG) can expose language models to misleading evidence in retrieved documents. We investigate whether increasing the number of mutually agreeing poi…
Single-Pass Uncertainty Heads for Claim-Level Hallucination Detection in Persian Medical Language Models
Mehrdad Ghassabi, Pedram Rostami, Hamidreza Baradaran Kashani +2
Hallucination detection is particularly important for medical language models, but repeated-sampling approaches are computationally expensive. A faster alternative is a single-pass…
Gaokerena: A Small Persian Medical Language Model Family
Mehrdad Ghassabi, Hamidreza Baradaran Kashani, Pedram Rostami +5
Persian medical natural language processing remains limited by the scarcity of domain-specific resources and insufficient public characterization of their coverage and quality. We…
PrismSSL: One Interface, Many Modalities; A Single-Interface Library for Multimodal Self-Supervised Learning
Melika Shirian, Kianoosh Vadaei, Kian Majlessi +4
We present PrismSSL, a Python library that unifies state-of-the-art self-supervised learning (SSL) methods across audio, vision, graphs, and cross-modal settings in a single, modul…