TAILIEUCHUNG - Báo cáo khoa học: "Dialogue Processing in a CALL-System"

In a CALL-environment (Computerassisted language learning) programs should ideally allow the learner to train his/her communicative competence, which is one of the main goals of foreign language teaching nowadays. This can be reached by allowing learners to use and train their knowledge of a foreign language in realistic dialogue-style exercises. All levels of linguistic and communicational analysis have to be considered to realize such a system. In this paper I will concentrate on the dialogue component of the concept, which relies on two main knowledge sources. . | Proceedings of EACL 99 Dialogue Processing in a CALL-System Veit Reuer Institut fiir deutsche Sprache und Linguistik Humboldt-Universitãt ZU Berlin Unter den Linden 6 10099 Berlin Germany Veit. Reuer@ Abstract In a CALL-environment Computer-assisted language learning programs should ideally allow the learner to train his her communicative competence which is one of the main goals of foreign language teaching nowadays. This can be reached by allowing learners to use and train their knowledge of a foreign language in realistic dialogue-style exercises. All levels of linguistic and com-municational analysis have to be considered to realize such a system. In this paper I will concentrate on the dialogue component of the concept which relies on two main knowledge sources. The discourse grammar structures the dialogue elements or dialogue acts as possible parts of a dialogue and the dialogue knowledge base provides the possible contents of dialogues. Additionally a framing discourse structure has to be built to provide the specific dialogue-exercise. A FSA finite state automaton based on the discourse grammar determines the possible moves which the dialogue might take. On the one hand this concept is restricted enough to allow for relatively easy maintenance as well as expansion and on the other hand it is advanced enough to allow for simulated complex dialogues. 1 Introduction Today the main goal in foreign language teaching is acquiring the so-called communicative competence instead of only memorizing the structure of the language. This can be achieved by making active language production one of the main parts of the curriculum. Being an efficient part of the media to enhance the learning process computers should present tasks that support the acquisition of communicative competence. In the present concept a presentation of situations is suggested in which the learner has to produce language . produce complete sentences in a simulated dialogue.

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