[Corpora-List] head of a (short) sentence

[Kevin B. Cohen]

I have a Perl class that does this using simple heuristics, and a Java
class in the works.  It's available at bionlp.sourceforge.net under
semantic classification (seems like an odd match, I know).

Kev

On Fri, Jun 24, 2011 at 4:54 AM, Vincenzo (Enzo) Maltese
<maltese at disi.unitn.it> wrote:
> Actually in my case they are all noun phrases (without verbs),
> as in the example below. I'm more interested in the accuracy.
>
> Thanks
> Enzo
>
> -----Original Message-----
> From: Yannick Versley [mailto:yversley at gmail.com]
> Sent: Friday, June 24, 2011 1:11 PM
> To: Vincenzo (Enzo) Maltese
> Cc: corpora at uib.no
> Subject: Re: [Corpora-List] head of a (short) sentence
>
> Dear Vincenzo,
>
> The problem you have does come up in computational linguistics occasionally,
> and you'll find solutions such as by Ponzetto&Strube:
> http://www.cl.uni-heidelberg.de/~ponzetto/pubs/ponzetto07b.pdf
> It's probably not too difficult to do something similar by running
> (say) the Stanford Parser, and use the head finder from the same package to
> determine the head of the whole phrase, or use a dependency parser such as
> MALTParser right away (in a dependency parse, the head of the phrase or
> sentence is attached to root (0) while all the modifiers are attached to
> something else.
>
> However, there are enough small-but-important details that you'd want to
> care about (speed vs accuracy tradeoffs, the exact head definition, i.e. do
> you want the lexical head "has" or the semantic head "driven" of "Peter has
> driven his car"; does it start from raw text or from tokens), and the task
> itself is easy enough that people usually build their own version of it
> if/when they need one.
>
> Best wishes,
> Yannick Versley
>
> On Fri, Jun 24, 2011 at 12:45 PM, Vincenzo (Enzo) Maltese
> <maltese at disi.unitn.it> wrote:
>> Dear all,
>>
>> I'm not an expert in NLP, but I'm looking for a java function acting
>> as a black box
>>
>> that by taking a short sentence in English such as "white wines in Italy"
>>
>> returns the head of the sentence "wines", i.e. something like:
>>
>>
>>
>> String getHead(String)
>>
>>
>>
>> Is there any?
>>
>>
>>
>> Thanks in advance,
>>
>> Vincenzo Maltese
>>
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>
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-- 
Kevin Bretonnel Cohen, PhD
Biomedical Text Mining Group Lead, Computational Bioscience Program,
U. Colorado School of Medicine
303-916-2417 (cell) 303-377-9194 (home)
http://compbio.ucdenver.edu/Hunter_lab/Cohen

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