Hypovigilance Detection for UCAV Operators Based on a Hidden Markov Model. - Ye Rim Choi; Namyeon Kwon; Sung Jun Lee; Yongwook Shin; Chuh Yeop Ryo; Jonghun Park; Dongmin Shin (Comput. Math. Methods Medicine, 2014)

Automatic extraction of persistent topics from social text streams. - Yongwook Shin; Chuh Yeop Ryo; Jonghun Park (World Wide Web, 2014)