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... PLSl and LDA. Proc. 26-th Annual International ACM SIGIR Conference, 2003,
pp. 433-434. [5] T. Hofmann,Unsupervised learning by probabilistic latent ...
Hierarchical Topic Models and the Nested Chinese Restaurant Process David 16
.
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We develop a hierarchical version of the CRP to use in specifying a prior for such
models. A nested Chinese restaurant ... When the distribution p(d \ a) is chosen to
be a Dirichlet distribution, we obtain the latent Dirichlet allocation model (LDA) ...
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This model, hierarchical LDA (hLDA), is illustrated in Figure Ib. The node labeled
T refers to a collection of an infinite number of L-level paths drawn from a nested
CRP. Given T, the c,nj variables are deterministic — simply look up the /"th level ...
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This illustrates a sample from the state space of the posterior nested CRP of
Figure Ib for four documents, (b) The graphical model representation of
hierarchical LDA with a nested CRP prior. We have separated the nested
Chinese restaurant ...
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