Papers › Adaptive Thinking via Mode Policy Optimization for Social Language Agents

Adaptive Thinking via Mode Policy Optimization for Social Language Agents

4 May 2025arXiv:2505.02156archive 2025-07-28

Minzheng Wang, Yongbin Li, Haobo Wang, Xinghua Zhang, Nan Xu, Bingli Wu, Fei Huang, Haiyang Yu, Wenji Mao

Effective social intelligence simulation requires language agents to dynamically adjust reasoning depth, a capability notably absent in current studies. Existing methods either lack this kind of reasoning capability or enforce Long Chain-of-Thought reasoning uniformly across all scenarios, resulting in excessive token usage and inflexible social simulation. To address this, we propose an Adaptive Mode Learning (AML) framework in this paper, aiming to improve the adaptive thinking ability of language agents in dynamic social interactions. To this end, we first identify hierarchical thinking modes ranging from intuitive response to deep deliberation based on the cognitive control theory. We then develop the Adaptive Mode Policy Optimization (AMPO) algorithm to optimize the context-aware mode switching and reasoning. Our framework advances existing research in three key aspects: (1) Multi-granular thinking mode design, (2) Context-aware mode switching across social interaction, and (3) Token-efficient reasoning via depth-adaptive processing. Extensive experiments on social intelligence benchmarks verify that AML achieves 15.6% higher task performance than GPT-4o. Notably, our AMPO outperforms GRPO by 7.0% with 32.8% shorter reasoning chains, demonstrating the advantage of adaptive thinking mode selection and optimization mechanism in AMPO over GRPO's fixed-depth solution.

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compute_ampo_outcome_advantage MozerWang/AMPO/RL/verl/trainer/ppo/core_algos.py official repository unverified Apache-2.0 (permissive) · e10605fc9d184927 · report
compute_mode_adv MozerWang/AMPO/RL/verl/trainer/ppo/core_algos.py official repository unverified Apache-2.0 (permissive) · d376da2e6702c075 · report

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