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Author

Siheng Chen

5 papers indexed here

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Towards Long-horizon Embodied Agents with Tool-Aligned Vision-Language-Action Models

This work introduces a VLA tool-family interface that exposes explicit tool selection and in-execution progress feedback, enabling efficient event-triggered agent replanning without continuous agent polling and proposes Tool-Aligned Post-Training (TAPT), which constructs invocation-aligned training units for instructio...

Zi-Xing Lei, Changxing Liu, Yi-Chen Xiong et al. · 16 citations
#artificial intelligence Preprint Sep 2026

Beyond Token Alignment: Event Completion for Cross-Tokenizer On-Policy Distillation

ESCD aggregates prefix-related teacher events and supervises the total probability of byte-compatible one-step student completions, avoiding tokenizer-dependent probability splits among individual tokens, and support event entry and event completion as complementary supervision targets for cross-tokenizer knowledge tra...

Jia-Cheng Liu, Jing-Wei Song, Qi-Tuan Zhang et al. · 0 citations
#artificial intelligence Review Sep 2026

RSI-Master: Structuring Experiments to Guide Autonomous Model Improvement

RSI-Master consists of an Experiment OS, which enables regularized experimental actions and maintains persistent, traceable experimental records, and Reviewer-Guided Research Orchestration, which organizes Workers and Reviewers in a dynamically growing research DAG.

Ya-Xin Du, Xi-Yuan Yang, Zhi-Fan Zhou et al. · 1 citation
Preprint Aug 2026

ABSeeker: Training Long-Horizon Search Agents via Answer-Backtracked Credit Assignment

Answer-Backtracked Credit Assignment (ABC) is proposed, a fine-grained credit assignment framework for training long-horizon search agents by converting sparse trajectory-level outcomes into dense step-level supervision that rewards useful actions (even in failed trajectories) while suppressing erroneous or redundant a...

Yi-Jun Lu, Rui Ye, Jia-Jun Wang et al. · 1 citation

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