| 2012 | IDEAL | Modified Reducts and Their Processing for Nearest Neighbor Classification. | Naohiro Ishii, Ippei Torii, Yongguang Bao, Hidekazu Tanaka |
| 2011 | KES | Control of Variables in Reducts - kNN Classification with Confidence. | Naohiro Ishii, Yuichi Morioka, Yongguang Bao, Hidekazu Tanaka |
| 2010 | ICTAI | Classification by Partil Data of Multiple Reducts-kNN with Confidence. | Naohiro Ishii, Yuichi Morioka, Hiroaki Kimura, Yongguang Bao |
| 2010 | IDEAL | Classification by Multiple Reducts-kNN with Confidence. | Naohiro Ishii, Yuichi Morioka, Hiroaki Kimura, Yongguang Bao |
| 2010 | SNPD | Classification by Rough Set Reducts, AdaBoost and SVM. | Naohiro Ishii, Yuichi Morioka, Shinichi Suyama, Yongguang Bao |
| 2009 | IDEAL | Nearest Neighbor Classification by Relearning. | Naohiro Ishii, Yuta Hoki, Yuki Okada, Yongguang Bao |
| 2008 | ICTAI | Rough Set Based Learning for Classification. | Naohiro Ishii, Takahiro Yamada, Yongguang Bao, Hidekazu Tanaka |
| 2008 | KES | Improved Accuracy by Relearning and Combining Distance Functions. | Naohiro Ishii, Takahiro Yamada, Yongguang Bao |
| 2006 | IDEAL | Classification by Weighting, Similarity and kNN. | Naohiro Ishii, Tsuyoshi Murai, Takahiro Yamada, Yongguang Bao |
| 2006 | KES | Text Classification: Combining Grouping, LSA and kNN vs Support Vector Machine. | Naohiro Ishii, Takeshi Murai, Takahiro Yamada, Yongguang Bao, Susumu Suzuki |
| 2005 | IDEAL | Classification by Instance-Based Learning Algorithm. | Yongguang Bao, Eisuke Tsuchiya, Naohiro Ishii, Xiaoyong Du |
| 2005 | SERA | Combining Classification Improvements by Ensemble Processing. | Naohiro Ishii, Eisuke Tsuchiya, Yongguang Bao, Nobuhiko Yamaguchi |
| 2004 | IDEAL | Combining Multiple k-Nearest Neighbor Classifiers Using Different Distance Functions. | Yongguang Bao, Naohiro Ishii, Xiaoyong Du |
| 2003 | IDEAL | An Effective Rough Set-Based Method for Text Classification. | Yongguang Bao, Daisuke Asai, Xiaoyong Du, Kazutaka Yamada, Naohiro Ishii |
| 2003 | IDEAL | Generating Representative from Clusters of Association Rules on Numeric Attributes. | Atsushi Hashizume, Yongguang Bao, Xiaoyong Du, Naohiro Ishii |
| 2003 | SNPD | Data Partition for Text Classification Based on Rough Sets. | Daisuke Asai, Yongguang Bao, Naohiro Ishii |
| 2002 | DIS | Combining Multiple K-Nearest Neighbor Classifiers for Text Classification by Reducts. | Yongguang Bao, Naohiro Ishii |
| 2002 | IDEAL | Combining Feature Selection with Feature Weighting for k-NN Classifier. | Yongguang Bao, Xiaoyong Du, Naohiro Ishii |
| 2001 | WISE | A Rough Set-Based Hybrid Method to Text Categorization. | Yongguang Bao, Satoshi Aoyama, Xiaoyong Du, Kazutaka Yamada, Naohiro Ishii |