Towards compatible semantics for deep and shallow processing

Parsers that use `deep' linguistic processing, based on frameworks such as
HPSG, fail to be robust enough to deal with many practical applications.
Shallower processing techniques can be more robust, but have considerable
limitations when it comes to building semantic representations. I will
discuss some applications where it appears useful to combine deep and
shallow processing techniques and will argue that relatively tight
integration may be required. A promising approach to the problem of interfacing deep and
shallow processing is to develop a notion of semantic representation where
shallower processors can output structures which are strictly underspecified with
respect to the deeper processor output. I will illustrate this idea with
some informal examples and then go on to describe initial work on developing
Robust Minimal Recursion Semantics (RMRS), a variant of Minimal Recursion
Semantics which allows radical underspecification of semantic structures. I will
discuss some preliminary experiments on constructing RMRSs from the output
of a moderately shallow processor, the RADISP system (Briscoe and Carroll,
2002).


If you would like to meet with the speaker, please contact:

Katrin Erk

This seminar series is jointly organized by the Department of
Computational Linguistics and Phonetics and the European Post-Graduate
College in Language Technology and Cognitive Systems.

A current version of the program for this term can be found at:

http://www.coli.uni-sb.de/colloquium/



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