Talk:Probabilistic latent semantic analysis: Difference between revisions

Revision as of 09:21, 18 April 2008

Revision as of 13:18, 5 July 2008

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: No, in every paper i have read, the latent variable is always denoted as 'z'. So the text should be changed instead.--[[Special:Contributions/137.250.39.133|137.250.39.133]] ([[User talk:137.250.39.133|talk]]) 09:21, 18 April 2008 (UTC)

: Dear 137.250.39.133: first the goal here is not necessarily to reproduce what you read in other papers, but to provide a self-contained explanation of PLSA. Whether the latent variable is denoted c or z is inconsequential as long as it is clear that it is a latent variable. However, the main issue with the graph is that it is confusing w.r.t. the document variable 'd', which is denoted by the theta in the graph. I doubt every paper you read uses this notation -- of the papers cited here, Hofmann, Vinokourov et al. and Gaussier et al. cerrtainly do not. Finally there is a captioning problem: the words are not the only observables, the document index is observed too (by definition). [[User:Sunny house|Sunny house]] ([[User talk:Sunny house|talk]]) 13:18, 5 July 2008 (UTC)