Fine-tuning and adaptation

LoRA, PEFT, instruction tuning and domain adaptation — adapting a pretrained model without paying to train one.

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arXiv Computer Vision
Oct 2

AutoGUIWorld: Image Generators as Visual World Models for GUI Agent

arXiv:2610.01215v1 Announce Type: new Abstract: GUI agents require high-quality interaction trajectories to learn how software environments respond to actions, maintain state, and support multi-step...

By Cheng Yang, Yifan Wu, Yutao Huang, Zhaohua Zhang, Beiduo Chen, Muxi Chen, Chenchen Zhao, Hexuan Deng, Haolin Yang, Geyuan Zhu, Sa Zhu, Jianhuan Zhuo, Qiuyong Xiao, Jianhao Ruan, Yiran Peng, Jiayi Zhang, Tian Ye, Xinlei Yu, Tianwen Jiang, Jihong Zhang, Yuyu Luo
arXiv AI
Oct 2

PG-SFT: Balancing Capability Acquisition and Retention in Offline Agent Fine-Tuning

PG-SFT: Balancing Capability Acquisition and Retention in Offline Agent Fine-Tuning explores how to maintain a model’s existing abilities while teaching it new ones through supervised fine‑tuning on offline agent trajectories. The authors compare standard SFT, KL‑penalty, and update‑magnitude constraints, finding that these methods still degrade non‑target capabilities. They introduce Privilege‑Guided SFT (PG‑SFT), which uses turn‑level information gain to modulate supervision strength, achieving a better trade‑off between acquiring new skills and preserving existing ones, though with a slight drop in target‑task performance.

By Ronghua Li, Zi Liang, Zhishan Li, Shinan Liu
arXiv AI
Oct 2

Not All Experience Belongs in the Weights: Component Routing for Self-Improving GUI Agents

The paper introduces component routing for self‑improving GUI agents, separating experience into locators, procedures, state facts, and lessons, and directing each to either the model weights or the prompt context. Experiments across three backbone families, two environments, and multiple seeds show that routing improves performance over whole‑trajectory baselines, with a rule based on recurrence and state‑conditionality accurately predicting the optimal destination. The study also analyzes how training dynamics and producer‑consumer differences affect the value of each destination, revealing that readout decreases for frequently recurring items when written to weights, while context gains grow with the information gap and weight gains shrink with the policy gap.

By Beining Wu, Zihao Ding, Jun Huang
arXiv AI
Oct 2

Temporal-Difference Learning for Dragonchess

The paper examines the performance of evolutionary transfer learning and TD(lambda) in the three‑dimensional chess game Dragonchess. By re‑implementing the engine in C++ to accelerate play, the authors ran 10,000 games with statistical confidence, showing both adaptive methods outperform all other agents in a round‑robin tournament. The results indicate no significant performance difference between the evolved and learned evaluation functions, demonstrating the effectiveness of adaptive techniques in complex, novel game domains.

By Jim O'Connor, Annika Hoag, Sarah Goyette, Gary B. Parker
arXiv AI
Oct 2

Backdoor Purification for LoRA-Tuned LLMs via Null-Space Projection

The paper introduces a method to purify LoRA-tuned large language models (LLMs) against backdoor attacks without relying on trigger knowledge, clean references, or retraining. By extracting high‑fidelity backdoor directions and projecting LoRA updates onto orthogonal null spaces in input and output channels, the approach reduces attack success rates from nearly 100% to under 10%. Experiments demonstrate that this null‑space projection preserves both the base model’s general capabilities and the new downstream skills learned through the adapter across various tasks.

By Jianwei Li, Jung-Eun Kim