| 2019 | AINA | Forecasting Crypto-Asset Price Using Influencer Tweets. | Hirofumi Yamamoto, Hiroki Sakaji, Hiroyasu Matsushima, Yuki Yamashita, Kyohei Osawa, Kiyoshi Izumi, Takashi Shimada |
| 2013 | ISCAS | A 10-bit fast lock all-digital data recovery with CR oscillator reference for automotive network. | Hironobu Akita, Takahisa Yoshimoto, Hirofumi Yamamoto, Nobuaki Matsudaira, Shigeki Ohtsuka, Shinichirou Taguchi |
| 2009 | NAACL | On the Importance of Pivot Language Selection for Statistical Machine Translation. | Michael Paul, Hirofumi Yamamoto, Eiichiro Sumita, Satoshi Nakamura |
| 2008 | COLING | Multilingual Mobile-Phone Translation Services for World Travelers. | Michael Paul, Hideo Okuma, Hirofumi Yamamoto, Eiichiro Sumita, Shigeki Matsuda, Tohru Shimizu, Satoshi Nakamura |
| 2008 | IJCNLP | Method of Selecting Training Data to Build a Compact and Efficient Translation Model. | Keiji Yasuda, Ruiqiang Zhang, Hirofumi Yamamoto, Eiichiro Sumita |
| 2007 | EMNLP | Bilingual Cluster Based Models for Statistical Machine Translation. | Hirofumi Yamamoto, Eiichiro Sumita |
| 2006 | Interspeech | Language modeling of Chinese personal names based on character units for continuous Chinese speech recognition. | Xinhui Hu, Hirofumi Yamamoto, Gen-ichiro Kikui, Yoshinori Sagisaka |
| 2006 | Interspeech | Speech recognition of foreign out-of-vocabulary words using a hierarchical language model. | Hirofumi Yamamoto, Gen-ichiro Kikui, Satoshi Nakamura, Yoshinori Sagisaka |
| 2005 | ICASSP | Speech recognition of a named entity. | Tatsuhiko Tomita, Yoshiyuki Okimoto, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 2004 | COLING | A Unified Approach in Speech-to-Speech Translation: Integrating Features of Speech recognition and Machine Translation. | Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto, Frank K. Soong, Taro Watanabe, Wai Kit Lo |
| 2004 | Interspeech | Mis-recognized utterance detection using hierarchical language model. | Hirofumi Yamamoto, Gen-ichiro Kikui, Yoshinori Sagisaka |
| 2004 | Interspeech | Improved spoken language translation using n-best speech recognition hypotheses. | Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto, Frank K. Soong, Taro Watanabe, Eiichiro Sumita, Wai Kit Lo |
| 2003 | Interspeech | Mis-recognized utterance detection using multiple language models generated by clustered sentences. | Katsuhisa Fujinaga, Hiroaki Kokubo, Hirofumi Yamamoto, Gen-ichiro Kikui, Hiroshi Shimodaira |
| 2003 | Interspeech | Word class modeling for speech recognition with out-of-task words using a hierarchical language model. | Yoshihiko Ogawa, Hirofumi Yamamoto, Yoshinori Sagisaka, Gen-ichiro Kikui |
| 2003 | NAACL | Adaptation Using Out-of-Domain Corpus within EBMT. | Takao Doi, Eiichiro Sumita, Hirofumi Yamamoto |
| 2002 | ACL | Finding Translation Pairs from English-Japanese Untokenized Aligned Corpora. | Gen-ichiro Kikui, Hirofumi Yamamoto |
| 2002 | COLING | Language Model Adaptation with Additional Text Generated by Machine Translation. | Hideharu Nakajima, Hirofumi Yamamoto, Taro Watanabe |
| 2002 | LREC | Toward a Broad-coverage Bilingual Corpus for Speech Translation of Travel Conversations in the Real World. | Toshiyuki Takezawa, Eiichiro Sumita, Fumiaki Sugaya, Hirofumi Yamamoto, Seiichi Yamamoto |
| 2001 | ACL | Multi-Class Composite N-gram Language Model for Spoken Language Processing Using Multiple Word Clusters. | Hirofumi Yamamoto, Shuntaro Isogai, Yoshinori Sagisaka |
| 2001 | Interspeech | Multi-class composite n-gram language model using multiple word clusters and word successions. | Shuntaro Isogai, Katsuhiko Shirai, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 2001 | Interspeech | New language models using phrase structures extracted from parse trees. | Takatoshi Jitsuhiro, Hirofumi Yamamoto, Setsuo Yamada, Yoshinori Sagisaka |
| 2001 | Interspeech | Structured language model for class identification of out-of-vocabulary words arising from multiple wordclasses. | Shigehiko Onishi, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 2000 | Interspeech | Pronunciation variants description using recognition error modeling with phonetic derivation hypotheses. | Hideharu Nakajima, Yoshinori Sagisaka, Hirofumi Yamamoto |
| 2000 | Interspeech | Rules, but what for? - rule description as efficient and robust abstraction of corpora and optimal fitting to applications -. | Yoshinori Sagisaka, Hirofumi Yamamoto, Minoru Tsuzaki, Hiroaki Kato |
| 2000 | Interspeech | A hierarchical language model incorporating class-dependent word models for OOV words recognition. | Koichi Tanigaki, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 2000 | Interspeech | A language model for conversational speech recognition using information designed for speech translation. | Hirofumi Yamamoto, Kouichi Tanigaki, Yoshinori Sagisaka |
| 2000 | Interspeech | An embedded knowledge integration for hybrid language modelling. | Shuwu Zhang, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 1999 | ICASSP | Multi-class composite N-gram based on connection direction. | Hirofumi Yamamoto, Yoshinori Sagisaka |
| 1999 | Interspeech | Part-of-speech n-gram and word n-gram fused language model. | Hirofumi Yamamoto, Yoshinori Sagisaka |
| 1998 | Interspeech | Grammatical word graph re-generation for spontaneous speech recognition. | Hajime Tsukada, Hirofumi Yamamoto, Toshiyuki Takezawa, Yoshinori Sagisaka |
| 1997 | Interspeech | Integration of grammar and statistical language constraints for partial word-sequence recognition. | Hajime Tsukada, Hirofumi Yamamoto, Yoshinori Sagisaka |
| 1996 | ICASSP | Spontaneous dialogue speech recognition using cross-word context constrained word graphs. | Tohru Shimizu, Hirofumi Yamamoto, Hirokazu Masataki, Shoichi Matsunaga, Yoshinori Sagisaka |