Question about Probabilistic Parser with CYK

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2007-11-21
2013-05-30
  • Nobody/Anonymous

    Hello, I downloaded marf-0.3.0-devel-20060226.jar and the zip that contains Probabilistic Parser. The problem is that I don't know how to use it in order to create a project that shows how CYK is working.
    Thank you for your time.

     
    • Serguei A. Mokhov

      Hi,

      You have downloaded just the algorithm implementation.
      To see how it's used, download the corresponding application
      that uses the algorithm implementation to test different
      cases (called ProbabilisticParsingApp):

      https://sourceforge.net/project/showfiles.php?group_id=63118&package_id=153615

      There you will find the source code, sample grammars and
      sentences.

      -s

       
    • Nobody/Anonymous

      Thank you for your reply. I have another question and this is: is there an implementation for the outside CYK (or inside CYK)? (probabilities in these cases are computed like in the "inside-outside" algorithm)

       
      • Serguei A. Mokhov

        Hi again,

        MARF doesn't have the inside-outside implementation per-se.
        You can find one linked from the Wikipedia article:

          http://en.wikipedia.org/wiki/Inside-outside_algorithm

        and there, there is a reference to an open-source implementation
        by Mark Johnson:

          http://www.cog.brown.edu/~mj/Software.htm

        It seems it is in C++. You can convert it to Java.
        You are invited to contribute it to MARF if you
        do the implementation or re-writing yourself. Please
        let me know.

        -s

         

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