Grammars as software libraries

doi:10.1017/CBO9780511770524.014

13 - Grammars as software libraries

Published online by Cambridge University Press: 06 August 2010

Aarne Ranta

Edited by

Yves Bertot ,

Gérard Huet ,

Jean-Jacques Lévy and

Gordon Plotkin

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Aarne Ranta: Affiliation:
Chalmers University of Technology and University of Gothenburg
Yves Bertot: Affiliation:
INRIA-Sophia Antipolis, France
Gérard Huet: Affiliation:
Institut National de Recherche en Informatique et en Automatique (INRIA), Rocquencourt
Jean-Jacques Lévy: Affiliation:
Institut National de Recherche en Informatique et en Automatique (INRIA), Rocquencourt
Gordon Plotkin: Affiliation:
University of Edinburgh

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Summary

Abstract

Grammars of natural languages are needed in programs such as natural language interfaces and dialogue systems, but also more generally, in software localization. Writing grammar implementations is a highly specialized task. For various reasons, no libraries have been available to ease this task. This paper shows how grammar libraries can be written in GF (Grammatical Framework), focusing on the software engineering aspects rather than the linguistic aspects. As an implementation of the approach, the GF Resource Grammar Library currently comprises ten languages. As an application, a translation system from formalized mathematics to text in three languages is outlined.

Introduction

How can we generate natural language text from a formal specification of meaning, such as a formal proof? Coscoy, Kahn and Théry studied the problem and built a program that worked for all proofs constructed in the Coq proof assistant. Their program translates structural text components, such as we conclude that, but leaves propositions expressed in formal language:

We conclude that Even(n) → Odd(Succ(n)).

A similar decision is made in Isar, whereas Mizar permits English-like expressions for some predicates. One reason for stopping at this level is certainly that typical users of proof systems are comfortable with reading logical formulas, so that only the proof-level formalization needs translation.

Type: Chapter
Information: From Semantics to Computer Science
Essays in Honour of Gilles Kahn
, pp. 281 - 308

DOI: https://doi.org/10.1017/CBO9780511770524.014 [Opens in a new window]

Publisher: Cambridge University Press

Print publication year: 2009

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