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Xiku Du

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#artificial intelligence Preprint Oct 2026

TrajEvolve: Trajectory Evolution for Reinforcement Learning with Hindsight Credit Assignment

TrajEvolve reformulates step-level continuous credit assignment as a binary classification task, whether each step is necessary for task completion, and simplification not only reduces the learning difficulty but also enables step labels to be obtained through counterfactual verification, achieving precise identificati...

Yi Wen, Hao Chen, Wan-Yu Wang et al. · 0 citations
Preprint Aug 2026

ShiJianBench: From Dialogue to Decision for Long-Horizon Evaluation of Investment Advisors

Experiments on Chinese fund-market traces from 2021 to 2026 identify a stable leading group of LLM advisors that combines substantially stronger personalized content with competitive investor-side trajectory outcomes.

Jie Gong, Mao-Wei Jiang, Zhiwei Liu et al. · 3 citations · ⚡1

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