Present and Future Paradigms in the Automatized Translation of Natural Languages.

PRESENT AND FUTURE PARADIGMS IN THE AUTOMATIZED TRANSLATION "OF NATURAL LANGUAGES. Ch. BOITET, P. CHATELIN, P. DAUN FRAGA GETA, F-38041 GRENOBLE CEDEX 53X, PRANCE. Abstract Useful automatized translation must be considered in a problem-solving setting, composed of a linguistic environment and a computer environment. We examine the facets of the problem which we believe to be essential, and try to give some paradigms along each of them. Those facets are the linguistic strategy, the programming tools, the treatment of seman- tics, the computer environment and the types of implementation. Introduction Machine Translation has been a recurring theme ~n applied linguistics and computer science since the early fifties. Having not yet attained the enviable status of a science, it is best considered as an art in the same way as Knuth considers computer programming. Failure to recognize that MT must be treated in a problem- solving setting, that is, as a class of problems to be solved in various environments and accor- ding to various quality and cost criteria, has led and still leads to impassionate, antiscien- tific attitudes, ranging polemically between dreamy optimism and somber pessimism. Using the fairly large body of experience gained since the beginning of MT research, we try in this paper to extract the most essential facets of the problem and to propose some paradigms, alongside each of those facets, for usable computer systems which should appear in the near - or middle - term future. As a matter of fact, the phrase 'Machine Translation" is nowadays misleading and inade- quate. We shall replace it by the more appro- priate term "Automatized Translation" (of natural languages) and abbreviate it to AT. Part I tries to outline the problem situations in which AT can be considered. The following parts examine the different facets in turn. Part II is concerned with the linguistic strategy, Part III with the programming tools, Part IV with semantics, Part V with the computer environment and Part VI with possible types of implementation. I - Applicability, quality and cost : a problem situation. 1. The past Automatized translation systems were first envisaged and developed for information gathering purposes. The output was used by specialists to scan through a mass of documents, and, as RADC user report shows [49], the users were quite satisfied. This is no more the case with the growing need for the diffusion of information. Here, the final output must be a good translation. Second generation systems were designed with this goal in mind, and with the assumption that good enough translations cannot nOW be obtained auto- matically on a large scale, but for very res- tricted domains (see METEO). Hence, a realistic strategy is to try to automate as much as possible of the translation proc~s. This is the approach taken by GETA, TAUM, LOGOS, PROVOH and many others. Here, the problem is to answer existing needs by letting man and machine work together. Another approach comes from AI and is best exemplified in [9]. Here, the goal is …

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