Author

Jiang Liu

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Preprint Oct 2026

VTrajEmbed: Aligning Text with Video Object Trajectories via Spatiotemporal Embeddings

Fine-grained alignment between text and video object trajectories is a core challenge in multimodal understanding. Existing embedding models excel at global retrieval, yet their single global representation entangles multiple objects and their spatiotemporal dynamics, limiting direct object-level grounding. To address...

Rui-Zhi Chen, Zi-Ning Fan, Yu-Di Guo et al. · 0 citations

Book Open access Jul 2026

Unifying Granularity and Reliability: A Robust and Efficient Framework for Text-based Person Retrieval

A PETL-based framework named UniGR is presented that unifies granularity and reliability for robust and efficient TPR, and a multi-granularity relational adapter (MRA) is designed to capture both coarse-grained global and fine-grained local relational features among tokens.

Jingchen Hao, Jiang Liu, Zhen Peng et al. · Annual International ACM SIG... · 0 citations