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Guohao Sun

8 accepted papers

2026

IF-Prune: Information-Flow Guided Token Pruning for Efficient Vision-Language Models

CVPR 2026

Vision-language models (VLMs) with dynamic resolution vision encoders achieve strong performance, but face significant efficiency challenges due to long input sequences. A common approach is to assess the importance of tokens and prune those that are less informative. Recent methods utilizing a smal

Cited by 0SourcecodeScholar
2026

Unsupervised Graph-Level Anomaly Detection via Multi-granular Graph Structure Learning

IJCAI 2026

Graph-level anomaly detection (GLAD) aims to identify graphs that deviate from the majority in a dataset of graphs. Existing methods typically adopt either a global aggregation perspective that summarizes nodes within a graph into a representation vector, or a subgraph-oriented perspective which reg

Cited by 0Scholar
2025

Latent Chain-of-Thought for Visual Reasoning

NeurIPS 2025poster

Chain-of-thought (CoT) reasoning is critical for improving the interpretability and reliability of Large Vision-Language Models (LVLMs). However, existing training algorithms such as SFT, PPO, and GRPO may not generalize well across unseen reasoning tasks and heavily rely on a biased reward model. T…

Cited by 0SourceScholar
2025

Structured Policy Optimization: Enhance Large Vision-Language Model via Self-referenced Dialogue

ICCV 2025poster

Preference optimization algorithms typically enhance LLM response quality by leveraging human feedback on multiple answers given a fixed instruction. However, these methods often lack capturing the dynamic nature of conversational exchanges. For large vision-language models (LVLMs), direct preferenc…

Cited by 0SourcePDFScholar
2024

Prototypical Transformer As Unified Motion Learners

ICML 2024poster

In this work, we introduce the Prototypical Transformer (ProtoFormer), a general and unified framework that approaches various motion tasks from a prototype perspective. ProtoFormer seamlessly integrates prototype learning with Transformer by thoughtfully considering motion dynamics, introducing two…

Cited by 17SourcePDFScholar
2024

Self-Training Large Language and Vision Assistant for Medical Question Answering

EMNLP 2024main

Large Vision-Language Models (LVLMs) have shown significant potential in assisting medical diagnosis by leveraging extensive biomedical datasets. However, the advancement of medical image understanding and reasoning critically depends on building high-quality visual instruction data, which is costly…

2024

Text Is MASS: Modeling as Stochastic Embedding for Text-Video Retrieval

CVPR 2024highlight

The increasing prevalence of video clips has sparked growing interest in text-video retrieval. Recent advances focus on establishing a joint embedding space for text and video relying on consistent embedding representations to compute similarity. However the text content in existing datasets is gene…

Cited by 40SourcePDFScholar
2022

Modeling Spatio-temporal Neighbourhood for Personalized Point-of-interest Recommendation

IJCAI 2022poster

Point-of-interest (POI) recommendations can help users explore attractive locations, which is playing an important role in location-based social networks (LBSNs). In POI recommendations, the results are largely impacted by users' preferences. However, the existing POI methods model user and location…