Is there an algorithm for determining the relevance of a text to a theme?

一曲冷凌霜 提交于 2019-12-06 15:02:30

The common choice is supervised document classification on bag of words (or bag of n-grams) features, preferably with tf-idf weighting.

Popular algorithms include Naive Bayes and (linear) SVMs.

For this approach, you'll need labeled training data, i.e. documents annotated with relevant themes.

See, e.g., Introduction to Information Retrieval, chapters 13-15.

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