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About this paper

Jiacheng Du, Weiwei Xie, Tianyi Du, Shaoxiong Guo, Qibing Ren, Jiaheng Zhang

AOPSD trains a question-only math student using a frozen copy of its base model as a teacher, selectively revealing solution-DAG steps and weighting large-disagreement feedback with a student-scored continuation. On Qwen3-4B-Instruct-2507, 725 LIMO-V2 problems, and four benchmarks, it reaches a 72.5% average Pass@8, versus 65.9% for OPSD; this result is limited to that setup.

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