两级 Softmax 采样修正论文发布
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2026年10月8日,arXiv 平台(Information Retrieval 分类,一手来源)发布论文《两级 Softmax 采样修正:纠正规模失衡与分散度偏差》。论文指出两级 softmax(2LS)采样因忽略簇规模失衡与簇内相似度分散度,会产生系统性偏差。为此论文提出两种修正方法:Size-Corrected 2LS(S-2LS)与 Size- and Dispersion-Corrected 2LS(SD-2LS),分别针对规模失衡问题与规模、分散度双重问题进行纠正。这是目前该事件唯一报道,尚未见后续验证或讨论。
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- arXiv · Information Retrieval两级 Softmax 采样修正:纠正规模失衡与分散度偏差
论文提出 Size-Corrected 2LS(S-2LS)与 Size- and Dispersion-Corrected 2LS(SD-2LS)两种采样方法,修正两级 softmax(2LS)因忽略簇规模失衡与簇内相似度分散度而产生的系统性偏差。
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