What is algorithm of yahoo answers in retrieving candidates answers from answered question?

We know that every time a user posted a question, yahoo answers will return some candidates of answers from the answered question that it thinks that they are the answer for this question you have posted. May I know what is the information retrieval architecture/algorithm used behind it? could it be question to question mapping, question to answer mapping, term overlapping or more than that (e.g. tf.idf or much more)?

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  • 1 decade ago
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    Since none of us here work for YA, we don't know the details of how the programming works. I would assume that it is a simple 'keyword' search, similar to what they use to suggest which category to place your question in.

  • 3 years ago

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