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Academic Paper

Title: Instance-based natural language generation
Author: S. Varges
Institution: Università degli Studi di Trento
Author: Chris Mellish
Institution: University of Aberdeen
Linguistic Field: Applied Linguistics; Computational Linguistics
Abstract: We investigate the use of instance-based ranking methods for surface realization in natural language generation. Our approach to instance-based natural language generation (IBNLG) employs two components: a rule system that ‘overgenerates’ a number of realization candidates from a meaning representation and an instance-based ranker that scores the candidates according to their similarity to examples taken from a training corpus. We develop an efficient search technique for identifying the optimal candidate based on a novel extension of the A* algorithm. The rule system is produced automatically from a semantically annotated fragment of the Penn Treebank II containing management succession texts. We detail the annotation scheme and grammar induction algorithm and evaluate the efficiency and output of the generator. We also discuss issues such as input coverage (completeness) and fluency that are relevant to surface generation in general.


This article appears IN Natural Language Engineering Vol. 16, Issue 3, which you can READ on Cambridge's site or on LINGUIST .

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