I have a collection of documents, and know they may share a single topic. Is there a way to identify this topic? I know LDA (Latent Dirichlet Allocation) is an approach. But LDA result is to associate each document with a set of topics. However, I am more interested to find a common topic that can be used to label this collection.

asked Mar 09 '12 at 22:21

ouyang's gravatar image


One Answer:

Do you mean "find a set of topics, and assign each document to one of these topics"? If so, this is just clustering, and you can do that with k-means or more complex approaches, as you wish.

answered Mar 10 '12 at 07:31

Alexandre%20Passos's gravatar image

Alexandre Passos ♦

I would like to label this collection of documents with a single topic. I am not sure whether there exists an algorithm to achieve this goal.

(Mar 10 '12 at 09:39) ouyang
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