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How do I use Latent Semantic Analysis(LSA) for document classification, preferably in java?
Okay. Once I have my term-document matrix, what's the next step?
The next step is to perform LSA on the term-document matrix to generate a set of latent concepts, or topics, that underlie the documents. This is typically done using Singular Value Decomposition (SVD). Once you have your topics, you can use them as features to classify your documents using a machine learning algorithm.