Grammatical Inference: Algorithms and Applications 8th International Colloquium, ICGI 2006, Tokyo, Japan, September 20-22, 2006. Proceedings - Sakakibara, Yasubumi; Kobayashi, Satoshi; Sato, Kengo; Nishino, Tetsuro; Tomita, Etsuji (Springer Berlin Heidelberg, 2006)