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Mehrab Tanjim

9 accepted papers

2026

GT-SVJ: Generative-Transformer-Based Self-Supervised Video Judge For Efficient Video Reward Modeling

CVPR 2026

Aligning video generative models with human preferences remains challenging: current approaches rely on Vision-Language Models (VLMs) for reward modeling, but these models struggle to capture subtle temporal dynamics. We propose a fundamentally different approach: repurposing video generative models

Cited by 0SourceScholar
2025

Calibrating MLLM-as-a-judge via Multimodal Bayesian Prompt Ensembles

ICCV 2025poster

Multimodal large language models (MLLMs) are increasingly used to evaluate text-to-image (TTI) generation systems, providing automated judgments based on visual and textual context. However, these "judge" models often suffer from biases, overconfidence, and inconsistent performance across diverse im…

Cited by 0SourcePDFScholar
2025

Disambiguation in Conversational Question Answering in the Era of LLMs and Agents: A Survey

EMNLP 2025

Ambiguity remains a fundamental challenge in Natural Language Processing (NLP) due to the inherent complexity and flexibility of human language. With the advent of Large Language Models (LLMs), addressing ambiguity has become even more critical due to their expanded capabilities and applications. In

2025

Diversify-verify-adapt: Efficient and Robust Retrieval-Augmented Ambiguous Question Answering

NAACL 2025long

The retrieval augmented generation (RAG) framework addresses an ambiguity in user queries in QA systems by retrieving passages that cover all plausible interpretations and generating comprehensive responses based on the passages. However, our preliminary studies reveal that a single retrieval proces…

Cited by 2SourcePDFScholar
2025

Is Safety Standard Same for Everyone? User-Specific Safety Evaluation of Large Language Models

EMNLP 2025

As the use of large language model (LLM) agents continues to grow, their safety vulnerabilities have become increasingly evident. Extensive benchmarks evaluate various aspects of LLM safety by defining the safety relying heavily on general standards, overlooking user-specific standards. However, saf

2025

Self-Debiasing Large Language Models: Zero-Shot Recognition and Reduction of Stereotypes

NAACL 2025short

Large language models (LLMs) have shown remarkable advances in language generation and understanding but are also prone to exhibiting harmful social biases. While recognition of these behaviors has generated an abundance of bias mitigation techniques, most require modifications to the training data,…

2025

VISIAR: Empower MLLM for Visual Story Ideation

ACL 2025finding

Ideation, the process of forming ideas from concepts, is a big part of the content creation process. However, the noble goal of helping visual content creators by suggesting meaningful sequences of visual assets from a limited collection is challenging. It requires a nuanced understanding of visual…