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From: Bianca Pereira <aivykarter@gmail.com>
Date: Tue, 19 Aug 2014 15:04:11 +0100
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 <CAH=1yMOKKbvwaPwCdEoT8A4rEEsRFNPdR7N9cYsd=8jUSD9MbQ@mail.gmail.com>
Subject: Calculate Term Frequency
To: java-user <java-user@lucene.apache.org>
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Hi everybody,

  I would like to know your suggestions to calculate Term Frequency in a
Lucene document. Currently I am using MultiFields.getTermDocsEnum,
iterating through the DocsEnum 'de' returned and getting the frequency with
de.freq() for the desired document.

  My solution gives me the result I want but I am having time issues. For
instance, I want to calculate the term frequency for a given term for N
documents in a sequence. Then, every time I have a new document I have to
retrieve exactly the same DocsEnum again and iterate until find the
document I want. Of course I cannot cache DocsEnum (yes, I did this huge
mistake) because it is an iterator.

 Do you have any suggestions on how I can get Term Frequency in a fast way?
The unique suggestion I had up to now was "Do it programatically, don't use
Lucene". Should be this the solution?

  Thank you.

  Regards,
  Bianca Pereira

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