I used Mahout's LDA to topic model looots of web pages. The main issue I came across was that it just fell flat when I used LDA on different sites in the same r

I used Mahout's LDA to topic model looots of web pages. The main issue I came across was that it just fell flat when I used LDA on different sites in the same run. I'd tried a few different types of normalization and chrome filtering, but it just didn't fly. Performed best for me when it was run on a per-corpus basis.