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Title
Japanese: 
English:DEVELOPMENT AND EVALUATION OF ADAPTIVE ENGLISH PRACTICING SYSTEM FROM ERROR-ANNOTATED LEARNER CORPUS 
Author
Japanese: Thisayakorn Pakaporn, 西原明法.  
English: Thisayakorn Pakaporn, AKINORI NISHIHARA.  
Language English 
Journal/Book name
Japanese: 
English:7th International Technology, Education and Development Conference 
Volume, Number, Page        
Published date 2013 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:7th International Technology, Education and Development Conference 
Conference site
Japanese:バレンシア 
English:Valencia 
File
Official URL http://www.inted2013.org/
 
Abstract This study proposes a computer-assisted language learning (CALL) system for increasing error awareness, aiming for correct English usage and improvement of English proficiency of learners. The system incorporates two principles: learning from negative evidences, and prioritizing communication errors. Negative examples, specifically erroneous sentences, are extracted from learner corpus, to create practice exercises. These exercises constitute an intelligent practicing system, by exposing adaptively to abilities and weaknesses of each user, determined by his responses while using the learning system. Among all type of errors in the exercises, ones that impaired understanding, socalled communication errors, gain priority for being studied. Unlike traditional language instructions, actual frequent errors made by learners in general are emphasized, while individual errors are corrected. Moreover, learners are directed to focus on their weaknesses and unintelligible errors, thus it is considered as a straightforward and effective method. To evaluate, experiments are conducted by target users, which are Japanese learners. After using prototypes, evaluation is done in aspects of adaptive mechanism, learning achievement, and satisfaction of learners. The overall result concludes that the system has more potential to improve English ability than traditional non-adaptive approaches. At the end, recommendations for future improvements are discussed.

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