Learning Semantic Categories from Clickthrough Logs. - Mamoru Komachi; Shimpei Makimoto; Kei Uchiumi; Manabu Sassano (ACL/IJCNLP (2), 2009)

Japanese Abbreviation Expansion with Query and Clickthrough Logs. - Kei Uchiumi; Mamoru Komachi; Keigo Machinaga; Toshiyuki Maezawa; Toshinori Satou; Yoshinori Kobayashi (IJCNLP, 2011)

Inducing Word and Part-of-Speech with Pitman-Yor Hidden Semi-Markov Models. - Kei Uchiumi; Hiroshi Tsukahara; Daichi Mochihashi (ACL (1), 2015)

System Utterance Generation by Label Propagation over Association Graph of Words and Utterance Patterns for Open-Domain Dialogue Systems. - Hiroshi Tsukahara; Kei Uchiumi (PACLIC, 2015)

How LSTM Encodes Syntax: Exploring Context Vectors and Semi-Quantization on Natural Text. - Chihiro Shibata; Kei Uchiumi; Daichi Mochihashi (COLING, 2020)

Optimizing Word Segmentation for Downstream Task. - Tatsuya Hiraoka; Sho Takase; Kei Uchiumi; Atsushi Keyaki; Naoaki Okazaki (EMNLP (Findings), 2020)

Joint Optimization of Tokenization and Downstream Model. - Tatsuya Hiraoka; Sho Takase; Kei Uchiumi; Atsushi Keyaki; Naoaki Okazaki (ACL/IJCNLP (Findings), 2021)

Word-level Perturbation Considering Word Length and Compositional Subwords. - Tatsuya Hiraoka; Sho Takase; Kei Uchiumi; Atsushi Keyaki; Naoaki Okazaki (ACL (Findings), 2022)

Recurrent Neural Hidden Markov Model for High-order Transition. - Tatsuya Hiraoka; Sho Takase; Kei Uchiumi; Atsushi Keyaki; Naoaki Okazaki (ACM Trans. Asian Low Resour. Lang. Inf. Process., 2022)