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Xue-Song Li

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Preprint Oct 2026

ActiveWAM: Evidence-Aware Active Vision for World-Action Models

Active vision manipulation requires a policy to control both its camera and its end-effectors, yet camera motion determines which evidence remains visible within finite observation windows. Acquiring a new view can displace task-critical cues, while retaining a view forgoes potentially useful observations. We formulate...

Ren-Jun Wu, Lu-Zhou Ge, Xue-Song Li · 0 citations
Preprint Aug 2026

ViTaR: Visuo-Tactile Residual Adaptation for Foundation VLA Manipulation

ViTaR is introduced, which reframes tactile feedback from an action-generating perceptual input to an execution modulator that selects and scales bounded residual corrections atop a frozen VLA, preserving pretrained capabilities by construction.

Yi Wang, Ren-Jun Wu, Jin-Yan Liu et al. · 0 citations
Preprint Aug 2026

SparkVLA: Stop-Aware Hierarchical VLA with Adaptive Action Chunking for Long-Horizon Manipulation

SparkVLA is presented, a stop-aware hierarchical VLA that resolves this mutual dependency by formulating both decisions as a single ranking: Stop competes against every action-prefix length in a unified candidate set, and the system selects the highest-scoring option, eliminating threshold tuning and requiring only off...

Xun-Yao Lei, Ren-Jun Wu, Tianlin Huo et al. · 1 citation
#machine learning Preprint Aug 2026

MemCatalyst: Amplifying Data Auditing on Vision-Language Models via Data Poisoning

This work proposes MemCatalyst, a set of data poisoning tools, aiming to amplify the data auditing performance on VLMs, and forces VLMs to over-learn specific inconsistencies between image features and textual semantics during training, thereby increasing their susceptibility to membership information auditing.

Xukun Luan, Jinyan Liu, Yuhui Gong et al. · 0 citations

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