| 2001 | DIS | An Efficient Derivation for Elementary Formal Systems Based on Partial Unification. | Noriko Sugimoto, Hiroki Ishizaka, Takeshi Shinohara |
| 1999 | DIS | H-Map: A Dimension Reduction Mapping for Approximate Retrieval of Multi-dimensional Data. | Takeshi Shinohara, Jianping Chen, Hiroki Ishizaka |
| 1998 | DIS | Approximate Retrieval of High-Dimensional Data by Spatial Indexing. | Takeshi Shinohara, Jiyuan An, Hiroki Ishizaka |
| 1996 | ALT | Constructive Learning of Translations Based on Dictionaries. | Noriko Sugimoto, Kouichi Hirata, Hiroki Ishizaka |
| 1995 | ALT | Learning Unions of Tree Patterns Using Queries. | Hiroki Arimura, Hiroki Ishizaka, Takeshi Shinohara |
| 1994 | ALT | Finding Tree Patterns Consistent with Positive and Negative Examples Using Queries. | Hiroki Ishizaka, Hiroki Arimura, Takeshi Shinohara |
| 1992 | ALT | Efficient Inductive Inference of Primitive Prologs from Positive Data. | Hiroki Ishizaka, Hiroki Arimura, Takeshi Shinohara |
| 1992 | COLT | Polynomial Time Inference of a Subclass of Context-Free Transformations. | Hiroki Arimura, Hiroki Ishizaka, Takeshi Shinohara |
| 1989 | COLT | Learning Simple Deterministic Languages. | Hiroki Ishizaka |