Topic Tracking Based on Identifying Proper Number of the Latent Topics in Documents. - Midori Serizawa; Ichiro Kobayashi (J. Adv. Comput. Intell. Intell. Informatics, 2012)

A Study on Query Expansion Based on Topic Distributions of Retrieved Documents. - Midori Serizawa; Ichiro Kobayashi (CICLing (2), 2013)