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Sihan Yang

10 accepted papers

2026

MMSI-Bench: A Benchmark for Multi-Image Spatial Intelligence

ICLR 2026poster

Spatial intelligence is essential for multimodal large language models (MLLMs) operating in the complex physical world. Existing benchmarks, however, probe only single-image relations and thus fail to assess the multi-image spatial reasoning that real-world deployments demand. We introduce MMSI-Benc…

Cited by 0SourcecodeScholar
2026

Orthogonal Model Merging

ICML 2026poster

Merging finetuned Large Language Models (LLMs) has become increasingly important for integrating diverse capabilities into a single unified model. However, prevailing model merging methods rely on linear arithmetic in Euclidean space, which often destroys the intrinsic geometric properties of pretra…

Cited by 0SourceScholar
2026

The Unseen Bias: How Norm Discrepancy in Pre-Norm MLLMs Leads to Visual Information Loss

ICLR 2026poster

Multimodal Large Language Models (MLLMs), which couple pre-trained vision encoders and language models, have shown remarkable capabilities. However, their reliance on the ubiquitous Pre-Norm architecture introduces a subtle yet critical flaw: a severe norm disparity between the high-norm visual toke…

Cited by 0SourceScholar
2026

VidBridge-R1: Bridging QA and Captioning for RL-based Video Understanding Models with Intermediate Proxy Tasks

ICLR 2026poster

The "Reason-Then-Respond" paradigm, enhanced by Reinforcement Learning, has shown great promise in advancing Multimodal Large Language Models. However, its application to the video domain has led to specialized models that excel at either question answering (QA) or captioning tasks, but struggle to…

Cited by 0SourcecodeScholar
2025

Improving Alignment in LVLMs with Debiased Self-Judgment

EMNLP 2025

The rapid advancements in Large Language Models (LLMs) and Large Visual-Language Models (LVLMs) have opened up new opportunities for integrating visual and linguistic modalities. Yet, challenges remain in aligning these modalities effectively, causing issues such as hallucinations, where generated o

2025

MME-VideoOCR: Evaluating OCR-Based Capabilities of Multimodal LLMs in Video Scenarios

NeurIPS 2025poster

Multimodal Large Language Models (MLLMs) have achieved considerable accuracy in Optical Character Recognition (OCR) from static images. However, their efficacy in video OCR is significantly diminished due to factors such as motion blur, temporal variations, and visual effects inherent in video conte…

Cited by 0SourceScholar
2025

RICO: Improving Accuracy and Completeness in Image Recaptioning via Visual Reconstruction

EMNLP 2025

Image recaptioning is widely used to generate training datasets with enhanced quality for various multimodal tasks. Existing recaptioning methods typically rely on powerful multimodal large language models (MLLMs) to enhance textual descriptions, but often suffer from inaccuracies due to hallucinati

2025

UniCTokens: Boosting Personalized Understanding and Generation via Unified Concept Tokens

NeurIPS 2025poster

Personalized models have demonstrated remarkable success in understanding and generating concepts provided by users. However, existing methods use separate concept tokens for understanding and generation, treating these tasks in isolation. This may result in limitations for generating images with co…

Cited by 0SourcecodeScholar
2025

VFlowOpt: A Token Pruning Framework for LMMs with Visual Information Flow-Guided Optimization

ICCV 2025poster

Large Multimodal Models (LMMs) excel in visual-language tasks by leveraging numerous visual tokens for fine-grained visual information, but this token redundancy results in significant computational costs. Previous research aimed at reducing visual tokens during inference typically leverages importa…

Cited by 0SourcePDFScholar
2024

Calibrated Self-Rewarding Vision Language Models

NeurIPS 2024poster

Large Vision-Language Models (LVLMs) have made substantial progress by integrating pre-trained large language models (LLMs) and vision models through instruction tuning. Despite these advancements, LVLMs often exhibit the hallucination phenomenon, where generated text responses appear linguistically…