tailieunhanh - Báo cáo khoa học: "TRANSFORMING ENGLISH INTERFACESTO OTHERNATURALLANGUAGES: AN EXPERIMENT WITH PORTUGUESE GABRIEL PEREIRA LOPES "

Nowadays i t is common the construction of English understanding systems (interfaces) that sooner or later one has to re-use, adapting and conve~ ting them to other natural languages. This is not an easy task and in many cases the arisen problems are quite complex. In this paper an experiment that was accomplished for Portuguese language is reported and some conclusions are e x p l i c i t e l y stated. A know ledge information processing system, knownas SSIPA, with natural language comprehension capabilities that interacts with users in Portuguese through a Portuguese interface, LUSO,. | TRANSFORMING ENGLISH INTERFACES TO OTHER NATURAL LANGUAGES AN EXPERIMENT WITH PORTUGUESE GABRIEL PEREIRA LOPES- Departamento de Matemãtica Institute Superior de Agronomia Tapada da Ajuda - 1399 Lisboa Codex Portugal ABSTRACT Nowadays it is common the construction of English understanding systems interfaces that sooner or later one has to re-use adapting and conver ting them to other natural languages. This is not an easy task and in many cases the arisen problems are quite complex. In this paper an experiment that was accomplished for Portuguese language is reported and some conclusions are explicitely stated. A know ledge information processing system known as SSIPAj with natural language comprehension capabilities that interacts with users in Portuguese through a Portuguese interface LUSO was built. Logic was used as a mental aidandas a practical tool. 1. INTRODUCTION The CHAT-80 program for English Warren Pereira 1981 Pereira 1983 was transformed and ạ dapted to Portuguese. Logic Programming as a mental aid and Prolog Coelho 1983 Clocksin Melish 1981 and Extraposition Grammars Pereira 1983 as practical tools were adopted to implement a natural language interface for Portuguese. The interface here reported called LUSO was then coupled to a knowledge base for geography an extension of the CHAT-80 knowledge base. In an ulterior experiment LUSŨ dictionary was augmented with new vocabulary and LUSO was coupled to other modules that considerably augmented the expertise capabilities of SSIPA Sistema Simulador de urn Interlocutor Portuguẽs Automat co 2 . SSIPA is a complex knowledge information processing system with natural language comprehension and synthesis capabilitites that interacts with users in Portuguese due to the linguistic knowledge that is logically organized and codified in the above mentioned SSIPA s interface called the first step of its development SSIPA was able to answer 1 Present Adress Centro de Informatica Laboratộ rio Nacional de .