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arXiv 1206.6469cs.LGstat.ML
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从混合实型和类别关系数据中推断潜在结构

Inferring Latent Structure From Mixed Real and Categorical Relational Data

Duke University(杜克大学)

Esther Salazar, Matthew Cain, Elise Darling, Stephen Mitroff, Lawrence Carin

摘要:

我们考虑分析关系数据(矩阵),其中行对应于主题(例如,人),并且列对应于属性。矩阵的元素可以是实数和范畴的混合。每个主题和属性的特征在于一个潜在的二进制特征向量,和一个推断矩阵映射每个行列对的二进制特征向量的观察矩阵元素。行的潜在二进制特征通过具有低秩协方差矩阵的多变量高斯分布建模,并且高斯随机变量通过概率链接映射到潜在二进制特征。同一类型的构造共同应用于柱。该模型推断与每行和每列相关联的潜在的低维二进制特征,以及所有行之间和所有列之间的相关性结构。

英文摘要:

We consider analysis of relational data (a matrix), in which the rows correspond to subjects (e.g., people) and the columns correspond to attributes. The elements of the matrix may be a mix of real and categorical. Each subject and attribute is characterized by a latent binary feature vector, and an inferred matrix maps each row-column pair of binary feature vectors to an observed matrix element. The latent binary features of the rows are modeled via a multivariate Gaussian distribution with low-rank covariance matrix, and the Gaussian random variables are mapped to latent binary features via a probit link. The same type construction is applied jointly to the columns. The model infers latent, low-dimensional binary features associated with each row and each column, as well correlation structure between all rows and between all columns.

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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