45th Annual Meeting of the Association for Computational Linguistics(ACL 2007) (postech rank 1), page. 61 - 64, 2007-06-23
The 2010 IEEE workshop on spoken language technology (SLT 2010), 2010-12-14
The 31st Annual international ACM SIGIR Conference on Research and Development in Information Retrieval(ACM SIGIR08) (postech rank 1), page. 875 - 876, 2008-07-20
The Interspeech2010 workshop on second language studies: acquisition, learning, education and technology, 2010-09-23
The SLaTE 2011 – workshop on speech and language technology in education, 2011-08-25
The 2015 International Conference on Big Data and Smart Computing (BigComp 2015), 2015-02-10
The 25th AAAI conference on artificial intelligence (합격률 30% 미만), 2011-08-07
1st international workshop on spoken dialog systems, 2009-12-10
The 2nd international conference on computer supported education (CSEDU 2010),, 2010-04-09
6th IEEE International Conference on Industrial Informatics(INDIN 2008), page. 1469 - 1474, 2008-07-13
The 12th sigdial workshop on discourse and dialog, 2011-06-20
The 2010 APSIPA annual summit and conference, special session on computer-assisted language learning (CALL) based on speech and language technology, 2010-12-16
The 3rd international workshop on spoken dialog systems technology (IWSDS 2011), 2011-09-02
Thesis(Doctor), 2013
The 2nd international conference on computer supported education (CSEDU 2010), 2010-04-09
정보과학회논문지 : 소프트웨어 및 응용, vol. 34, no. 2, page. 131 - 139, 2007-02