LFG systems and LFG computer implementations

[Mark Johnson]

The XLE system has a stochastic component, which Ron Kaplan and Stefan 
Riezler and others have described in great detail in a number of 
papers.  I like to think I had a hand in starting this work; see


@InProceedings{Johnson99c,
   author =     "Mark Johnson and Stuart Geman and Stephen Canon and
                   Zhiyi Chi and Stefan Riezler",
   title =     "Estimators for Stochastic ``Unification-Based''
                   Grammars",
   booktitle =     "The Proceedings of the 37th Annual Conference of the
                   Association for Computational Linguistics",
   year =     1999,
   publisher =     "Morgan Kaufmann",
   address =     "San Francisco",
   pages =     {535-541}
}

which describes the basic stochastic LFG framework and the 
machine-learning techniques used to learn it.

Best,

Mark

On 02/04/10 13:28, Lori Levin wrote:
> Stefan et al.,
>
> Do any of the implemented LFG systems use statistical methods or 
> machine learning?   Also, is there any machine learning or grammar 
> induction from treebanks?  Just curious.
>
>
> --Lori
>
>
> Lori Levin
> Language Technologies Institute
> Carnegie Mellon University
>
>
>
> Martin Forst wrote:
>> Hi Stefan,
>>
>>> • Deutsch (Rohrer: 1996, Berman: 1996, Kuhn und Rohrer: 1997, Forst:
>>> 2006, Forst und Rohrer: 2009)
>>
>> There are probably more (and better) references for the German 
>> ParGram LFG. An important one is Dipper (2003); another one, which 
>> gives a good overview of the state of affairs at the time, is Rohrer 
>> & Forst (2006).
>>
>>> • Spanisch
>>
>> There is a company in Seville that seems to have their own Spanish 
>> (and English?) grammar(s) as well as their own processing platform. 
>> They were at a ParGram meeting a few years ago, which I missed, so I 
>> don't know any details or references.
>>
>> Apart from that, I have a little Spanish grammar, but it's very 
>> phenomenon-driven, not broad-coverage by any means and not documented 
>> anywhere, let alone in publications.
>>
>>> • Vietnamesisch
>>
>> As far as I know, the ParGram community hasn't heard from our 
>> Vietnamese partners in a long time. Not sure how far that grammar has 
>> ever come along...
>>
>> I hope this helps.
>>
>> Schöne Grüße
>>
>> Martin
>