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Ziwen Zhang

3 accepted papers

2025

Offline Opponent Modeling with Truncated Q-driven Instant Policy Refinement

ICML 2025poster

Offline Opponent Modeling (OOM) aims to learn an adaptive autonomous agent policy that dynamically adapts to opponents using an offline dataset from multi-agent games. Previous work assumes that the dataset is optimal. However, this assumption is difficult to satisfy in the real world. When the data…

Cited by 0SourcePDFScholar
2023

Focus on Details: Online Multi-Object Tracking With Diverse Fine-Grained Representation

CVPR 2023poster

Discriminative representation is essential to keep a unique identifier for each target in Multiple object tracking (MOT). Some recent MOT methods extract features of the bounding box region or the center point as identity embeddings. However, when targets are occluded, these coarse-grained global re…

Cited by 61SourcePDFScholar
2022

Adaptive Threshold Selective Self-Attention for Chinese NER

COLING 2022main

Recently, Transformer has achieved great success in Chinese named entity recognition (NER) owing to its good parallelism and ability to model long-range dependencies, which utilizes self-attention to encode context. However, the fully connected way of self-attention may scatter the attention distrib…