Agent navigation under linguistic instructions of a route using contextual information. - Fumihisa Shibata; Masakazu Shima; Masaya Ashida; Koh Kakusho; Tadahiro Kitahashi (SMC, 1998)

Concept Learning in Linguistic Navigation of Robots. - Fumihisa Shibata; Koh Kakusho; Masaya Ashida; Tadahiro Kitahashi (EJC, 1999)

Geometric Considerations of Search Behavior. - Masaya Ashida; Hirokazu Taki (KES (2), 2010)