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Si-Yuan Liu

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Defending Against Malicious Finetuning by Scaling Train-time Adversarial Attacks

Patcher is a novel and efficient adversarial training algorithm that alternates between an attack stage and a defense stage: the attack stage simulates many-step malicious finetuning and computes the resulting parameter displacement as an"attack vector", while the defense stage aims to preserve safe behavior under such...

Hao-Min Wen, Shi Chen, Qingyu Shi et al. · 0 citations
#artificial intelligence Preprint Sep 2026

What Should a Self-Teacher See? Privileged Context Design for On-Policy Self-Distillation

This work compares the student view and training fixed within each scale against three abstractions compiled offline, a named strategy, a method-independent framing, and a problem category, and against an answer-only control that keeps the destination but removes the path.

Kang-Hui Tian, Si-Yuan Liu, Tianxiang Jiang et al. · 2 citations
#artificial intelligence Preprint Sep 2026

A*-Thought-V2: Efficient Latent Reasoning via Geometric Dynamics of LLM

A*-Thought-V2 is presented, a geometric dynamics of LLM guided framework that models CoT as a hidden-state trajectory and replaces hard deletion with an explicit-implicit interleaved latent architecture that reflects broader soft targets that encourage richer step-level feature learning.

Xiao-An Xu, Si-Yuan Liu, Shuo Wang et al. · 1 citation
#computer vision Jan 2026

EMemBench: Interactive Benchmarking of Episodic Memory for VLM Agents

This work introduces EMemBench, a programmatic benchmark generator for evaluating long-term episodic memory of agents through interactive games, and evaluates memory agents with strong LMs/VLMs as backbones, using in-context prompting as baselines.

Xinze Li, Zi-Yue Zhu, Siyuan Liu et al. · 7 citations · ⚡1

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