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arXiv 1307.7841stat.ME
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分类数据的一种带特征选择的名义关联矩阵

A nominal association matrix with feature selection for categorical data

Wenxue Huang, Yong Shi, Xiaogang Wang

摘要:

我们引入了一个信息的概率关联矩阵来衡量一个变量与另一个分类变量的类别的局部到全局关联的比例。对于基于概率的比例预测,关联矩阵会产生多项响应变量的第一和第二类误差的预期预测分布。此外,矩阵对角线的归一化产生关联向量,其提供预期的类别准确度提升率分布。从矩阵进一步发展了一个灵活的权重向量的全球到全球的关联措施的一般计划。示出了由关联矩阵和向量定义的等价关系的层次结构。应用金融和调查数据与模拟结果。

英文摘要:

We introduce an informative probabilistic association matrix to measure a proportional local-to-global association of categories of one variable with another categorical variable. Towards a probability based proportional prediction, the association matrix gives rise to the expected predictive distribution of the first and second types of errors for a multinomial response variable. In addition, the normalization of the diagonal of the matrix gives rise to an association vector, which provides the expected category accuracy lift rate distribution. A general scheme of global-to-global association measures with flexible weight vectors is further developed from the matrix. A hierarchy of equivalence relations defined by the association matrix and vector is shown. Applications to financial and survey data together with simulations results are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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