Author

Le Zhang

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Preprint Aug 2026

Beyond Success and Failure: Length-Aware Contrastive Learning for GUI Agents

Experiments on GUI agent benchmarks show that LACL-GUI provides more effective learning signals and consistently improves agent performance over prior methods, highlighting the value of trajectory-level supervision in contrastive RLVR.

Chengyang Gu, Le Zhang, Jing-Bo Zhou et al. · 0 citations

Preprint Aug 2026

LLM-Based Hierarchical Coordinated Control with Continuation-Aware Policy Learning

Across both tasks, the proposed LLM-based hierarchical framework consistently outperforms direct task-specific control and optimization, end-to-end reinforcement learning, rule-based and RL-based hierarchical coordination, and prompting-only LLM coordinators, demonstrating the value of heterogeneous-context reasoning,...

Changhong He, Jinda Gao, Xinkuan Liu et al. · 0 citations