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박기태 ( Gi Tae Park ),이태훈 ( Tae Hoon Lee ),황소현 ( So Hyun Hwang ),김병만 ( Byeong Man Kim ),이현아 ( Hyun Ah Lee ),신윤식 ( Yoon Sik Shin ) 한국정보처리학회 2012 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.1 No.2
Computer aided language learning has become popular. But the level of automation of constructing a Korean learning assistant system is not so high because a practical language learning system needs large scale knowledge resources, which is very hard to acquire. In this paper, we propose a Korean learning assistant system that utilizes easily obtainable knowledge resources like a corpus, web documents and a lexicon. Our system has three modules - problem solving, pronunciation marker and writing assistant. Automatic problem generator uses a corpus and a lexicon to make problems with one correct answer and three distracters, then verifies their suitability by utilizing frequency information from web documents. We analyze pronunciation rules for a pronunciation marker and recommend appropriate words and sentences in real-time by using data extracted from a corpus. In experiment, we evaluate 400 automatically generated problems, which show 89.9% problem suitability and 64.9% example suitability.