Inquiries into words, constraints and contexts : Festschrift in the honour of Kimmo Koskenniemi on his 60th birthday

Peer reviewe

Approaches to Surface Realization with HPSG

HPSG is widely used in theoretical and computational linguistics, but rarely in natural language generation. The paper describes some approaches to surface realization in which HPSG can be used. The implementation of all the approaches combines generation algorithms in Prolog and HPSG grammars in ProFIT. It is natural to combine a head-driven HPSG grammar with a headdriven generation algorithm. We show how a simple head-driven generator can easily be adapted for use with HPSG. This works well with simplified semantics, but if we implement the full HPSG textbook semantics this approach does not work. In a second approach to head-driven generation, we implement some recent revisions of HPSG, and show that head-driven generation with HPSG is in fact possible. We then switch to non-head-driven approaches. We show how a bag generation algorithm, developed for use with categorial grammar and indexed QLF, can be used with HPSG and Minimal Recursion Semantics. We describe an approach to increm..