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Re: extraction tool using CRF++

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Date Tue, 1 Oct 2013 17:04:00 +0200
Subject Re: extraction tool using CRF++
From Joost Molenaar <j.j.molenaar@gmail.com>
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Hi Ron,
In the python/ subdirectory of the CRF++ source package there's a
README with instructions on how to use the CRFPP python module.

HTH,

Joost

On Tue, Oct 1, 2013 at 4:24 PM, Vlastimil Brom <vlastimil.brom@gmail.com> wrote:
> 2013/10/1 cerr <ron.eggler@gmail.com>:
>> Hi,
>>
>> I want to write an extraction tool using CRF++ (http://crfpp.googlecode.com/svn/trunk/doc/index.html).
>> I have written a trainings file and a template:
>> training:
>> banana  FOOD    B-NP
>> bread   FOOD    I-NP
>> template:
>> U01:%x[0,1]
>> U02:%x[1,1]
>>
>> and now I want to go ahead and extract the foods from a sentence like "how do I make a banana bread". Also, I'm unsure how I interface to crf++ with python, I compiled and installed it from source as described on the above website but I don't have a crf module available in python...
>> --
>> https://mail.python.org/mailman/listinfo/python-list
>
>
> Hi,
> I have unfortunately no experience with CRF++; if there is no python
> wrapper for it available, the usage might not be (easily) possible -
> depending on the character of this library, you may try accessing it
> e.g. via ctypes.
>
> Alternatively, you may try another packages already available, e.g.
> NLTK:  http://nltk.org/
>
>>>> import nltk
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("apple"))
> True
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("bread"))
> True
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("wine"))
> True
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("book"))
> False
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("pencil"))
> False
>
> # of course there might be some surprise, probably due to polysemy ore
> some specifics of the semantic description...
>
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("dog"))
> True
>>>> any(synset.lexname == "noun.food" for synset in nltk.corpus.wordnet.synsets("white"))
> True
>>>>
>
> cf.
> http://nltk.org/
> http://nltk.googlecode.com/svn/trunk/doc/howto/wordnet.html
> http://www.velvetcache.org/2010/03/01/looking-up-words-in-a-dictionary-using-python
> http://wordnet.princeton.edu/man/lexnames.5WN.html
>
> hth,
>    vbr
> --
> https://mail.python.org/mailman/listinfo/python-list

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Thread

extraction tool using CRF++ cerr <ron.eggler@gmail.com> - 2013-09-30 21:14 -0700
  Re: extraction tool using CRF++ Vlastimil Brom <vlastimil.brom@gmail.com> - 2013-10-01 16:24 +0200
  Re: extraction tool using CRF++ Joost Molenaar <j.j.molenaar@gmail.com> - 2013-10-01 17:04 +0200
    Re: extraction tool using CRF++ cerr <ron.eggler@gmail.com> - 2013-10-01 08:36 -0700

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