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Xinyu Fang

12 accepted papers

2026

ARM-Thinker: Reinforcing Multimodal Generative Reward Models with Agentic Tool Use and Visual Reasoning

CVPR 2026

Reward models are critical for aligning vision-language systems with human preferences, yet current approaches suffer from hallucination, weak visual grounding, and an inability to use tools for verification, limiting their reliability on complex multimodal reasoning tasks.We present **ARM-Thinker**

Cited by 0SourcecodeScholar
2026

Beyond Mode Collapse: Distribution Matching for Diverse Reasoning

ICML 2026poster

On-policy reinforcement learning methods like GRPO suffer from \emph{mode collapse}: they exhibit reduced solution diversity, concentrating probability mass on a single solution once discovered and ceasing exploration of alternative strategies. We show this stems from reverse KL minimization's mode-…

Cited by 0SourceScholar
2026

IWR-Bench: Can LVLMs reconstruct interactive webpage from a user interaction video?

ICLR 2026poster

The webpage-to-code task requires models to understand visual representations of webpages and generate corresponding code. However, existing benchmarks primarily focus on static screenshot-to-code tasks, thereby overlooking the dynamic interactions fundamental to real-world web applications. To addr…

Cited by 0SourcecodeScholar
2025

Creation-MMBench: Assessing Context-Aware Creative Intelligence in MLLMs

ICCV 2025poster

Creativity is a fundamental aspect of intelligence, involving the ability to generate novel and appropriate solutions across diverse contexts. While Large Language Models (LLMs) have been extensively evaluated for their creative capabilities, the assessment of Multimodal Large Language Models (MLLMs…

Cited by 0SourcePDFScholar
2025

Do Vision-Language Models Have Internal World Models? Towards an Atomic Evaluation

ACL 2025finding

Internal world models (WMs) enable agents to understand the world’s state and predict transitions, serving as the basis for advanced deliberative reasoning.Recent large Vision-Language Models (VLMs), such as GPT-4o and Gemini, exhibit potential as general-purpose WMs. While the latest studies have e…

Cited by 0SourcePDFScholar
2025

MuMA-ToM: Multi-modal Multi-Agent Theory of Mind

AAAI 2025technical

Understanding people's social interactions in complex real-world scenarios often relies on intricate mental reasoning. To truly understand how and why people interact with one another, we must infer the underlying mental states that give rise to the social interactions, i.e., Theory of Mind reasonin…

2025

OmniAlign-V: Towards Enhanced Alignment of MLLMs with Human Preference

ACL 2025long

Recent advancements in open-source multi-modal large language models (MLLMs) have primarily focused on enhancing foundational capabilities, leaving a significant gap in human preference alignment. This paper introduces OmniAlign-V, a comprehensive dataset of 200K high-quality training samples featur…

2025

Redundancy Principles for MLLMs Benchmarks

ACL 2025long

With the rapid iteration of Multi-modality Large Language Models (MLLMs) and the evolving demands of the field, the number of benchmarks produced annually has surged into the hundreds. The rapid growth has inevitably led to significant redundancy among benchmarks. Therefore, it is crucial to take a…

Cited by 0SourcePDFScholar
2024

MMBench-Video: A Long-Form Multi-Shot Benchmark for Holistic Video Understanding

NeurIPS 2024poster

The advent of large vision-language models (LVLMs) has spurred research into their applications in multi-modal contexts, particularly in video understanding. Traditional VideoQA benchmarks, despite providing quantitative metrics, often fail to encompass the full spectrum of video content and inadequ…

2024

Prism: A Framework for Decoupling and Assessing the Capabilities of VLMs

NeurIPS 2024poster

Vision Language Models (VLMs) demonstrate remarkable proficiency in addressing a wide array of visual questions, which requires strong perception and reasoning faculties. Assessing these two competencies independently is crucial for model refinement, despite the inherent difficulty due to the intert…

2024

ProSA: Assessing and Understanding the Prompt Sensitivity of LLMs

EMNLP 2024finding

Large language models (LLMs) have demonstrated impressive capabilities across various tasks, but their performance is highly sensitive to the prompts utilized. This variability poses challenges for accurate assessment and user satisfaction. Current research frequently overlooks instance-level prompt…

2023

Open Visual Knowledge Extraction via Relation-Oriented Multimodality Model Prompting

NeurIPS 2023poster

Images contain rich relational knowledge that can help machines understand the world. Existing methods on visual knowledge extraction often rely on the pre-defined format (e.g., sub-verb-obj tuples) or vocabulary (e.g., relation types), restricting the expressiveness of the extracted knowledge. In t…

Cited by 6SourcePDFScholar