| Summary: | 碩士 === 國立臺灣師範大學 === 資訊教育學系 === 98 === An automatic classification system for primary school students' dialogues was developed in the study. The system categorized participants’ dialogues obtained from a study on computer supported collaborative learning based on 15 types of dialogue acts, including “concept”, “proposition”, “hierarchy”, “for help and help”, “review”, “time controlling”, “flow controlling”, “conflict dealing”, “accountability demanding”, “motivating”, “name calling”, “disturbing”, “bicker” and “others”, by word segmentation, weighting calculation and classification from the perspective of ontology. The classification produced by the system was compared with the classification made by the experts in order to examine the effectiveness of the system. The study result revealed that (a) dialogues related to the dialogue act “review” and “flow controlling” could be classified more properly by the system than dialogues belonged to the dialogue act “name calling” and “others”; and (b) sentences, without structures or with misspelled words, and dialog contained context tended to be classified improperly by the system. Therefore, an advanced system with grammatical and spelling check and detection of context was recommended for the future development.
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