[Corpora-List] Planarity in dependency parsing

Jason Baldridge jbaldrid at mail.utexas.edu
Fri Apr 27 18:43:36 UTC 2007


Hi Shailly,

There are non-projective approaches to dependency parsing, one of the more
recent of which is McDonald's MSTParser. You can find information here:

http://www.seas.upenn.edu/~strctlrn/MSTParser/MSTParser.html

The parser itself can be downloaded from:

http://sourceforge.net/projects/mstparser

You might also look at Nivre's MaltParser, which is "pseudo-projective":

http://w3.msi.vxu.se/~nivre/research/MaltParser.html

As well as other resources available at the web page for this year's CoNLL
shared task on dependency parsing:

http://nextens.uvt.nl/depparse-wiki/SharedTaskWebsite

Many languages with non-projective dependencies are represented in the data
sets.

Jason


On 4/27/07, Shailly Goyal <shaillygoyal at gmail.com> wrote:
>
> Hi all,
>
> Although my doubt does not exactly suit in this mailing list, I would like
> to know why planarity (projectivity) is required for dependency parsing?
> Many sentences of languages such as German, Hindi are not planar. Does this
> mean that dependency based parsing is not suitable for these languages?
>
> Thanks in advance.
>
> Regards,
> Shailly
>
>
>
> --
> =======================
> Ms. Shailly Goyal
> Research Scholar
> Department of Mathematics
> IIT Delhi, New Delhi - 110016
> India.
> Ph. no.: +91 9899400393
> =======================
>
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