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Zhenbang Sun

6 accepted papers

2026

OmniSparse: Training-Aware Fine-Grained Sparse Attention for Long-Video MLLMs

AAAI 2026technical

Existing sparse attention methods primarily target inference-time acceleration by selecting critical tokens under predefined sparsity patterns. However, they often fail to bridge the training–inference gap and lack the capacity for fine-grained token selection across multiple dimensions—such as quer

Cited by 0SourcePDFScholar
2025

ACT as Human: Multimodal Large Language Model Data Annotation with Critical Thinking

NeurIPS 2025poster

Supervised learning relies on high-quality labeled data, but obtaining such data through human annotation is both expensive and time-consuming. Recent work explores using large language models (LLMs) for annotation, but LLM-generated labels still fall short of human-level quality. To address this pr…

Cited by 0SourceScholar
2025

Frame-Voyager: Learning to Query Frames for Video Large Language Models

ICLR 2025poster

Video Large Language Models (Video-LLMs) have made remarkable progress in video understanding tasks. However, they are constrained by the maximum length of input tokens, making it impractical to input entire videos. Existing frame selection approaches, such as uniform frame sampling and text-frame r…

Cited by 8SourcePDFScholar
2022

HCSC: Hierarchical Contrastive Selective Coding

CVPR 2022poster

Hierarchical semantic structures naturally exist in an image dataset, in which several semantically relevant image clusters can be further integrated into a larger cluster with coarser-grained semantics. Capturing such structures with image representations can greatly benefit the semantic understand…

Cited by 101PDFcodeScholar
2021

Cross-Category Video Highlight Detection via Set-Based Learning

ICCV 2021poster

Autonomous highlight detection is crucial for enhancing the efficiency of video browsing on social media platforms. To attain this goal in a data-driven way, one may often face the situation where highlight annotations are not available on the target video category used in practice, while the superv…

Cited by 62PDFcodeScholar
2020

Trajectory Similarity Learning with Auxiliary Supervision and Optimal Matching

IJCAI 2020poster

Trajectory similarity computation is a core problem in the field of trajectory data queries. However, the high time complexity of calculating the trajectory similarity has always been a bottleneck in real-world applications. Learning-based methods can map trajectories into a uniform embedding space…