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2011

Hierarchical multilinear models for multiway data

8 years 5 months ago
Hierarchical multilinear models for multiway data
Reduced-rank decompositions provide descriptions of the variation among the elements of a matrix or array. In such decompositions, the elements of an array are expressed as products of low-dimensional latent factors. This article presents a model-based version of such a decomposition, extending the scope of reduced rank methods to accommodate a variety of data types such as longitudinal social networks and continuous multivariate data that is cross-classified by categorical variables. The proposed model-based approach is hierarchical, in that the latent factors corresponding to a given dimension of the array are not a priori independent, but exchangeable. Such a hierarchical approach allows more flexibility in the types of patterns that can be represented. Some key words: Bayesian, multiplicative model, PARAFAC, regularization, shrinkage.
Peter D. Hoff
Added 13 May 2011
Updated 13 May 2011
Type Journal
Year 2011
Where CSDA
Authors Peter D. Hoff
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