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ORCIDHirofumi Yamamoto
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2020 – today
- 2020
[j13]Kazunori Hosotani, Hirofumi Yamamoto:
Free-Flow Tunnel Inspection Support Devices Aiming at Labor Saving of Visual Checking. J. Robotics Mechatronics 32(4): 832-839 (2020)
2010 – 2019
- 2019
- [c48]Hirofumi Yamamoto, Hiroki Sakaji, Hiroyasu Matsushima
, Yuki Yamashita, Kyohei Osawa, Kiyoshi Izumi, Takashi Shimada:
Forecasting Crypto-Asset Price Using Influencer Tweets. AINA 2019: 940-951 - 2016
- [j12]Kosuke Uchida, Toru Hiyoshi, Taro Nishiguchi, Hirofumi Yamamoto, Masaki Furumai, Takashi Tsuno, Yasuki Mikamura:
Lifetime estimation of SiC MOSFETs under high temperature reverse bias test. Microelectron. Reliab. 64: 425-428 (2016) - 2013
- [c47]Hironobu Akita, Takahisa Yoshimoto, Hirofumi Yamamoto, Nobuaki Matsudaira, Shigeki Ohtsuka, Shinichirou Taguchi:
A 10-bit fast lock all-digital data recovery with CR oscillator reference for automotive network. ISCAS 2013: 1171-1174 - 2010
- [j11]Chooi-Ling Goh, Taro Watanabe, Hirofumi Yamamoto, Eiichiro Sumita:
Constraining a Generative Word Alignment Model with Discriminative Output. IEICE Trans. Inf. Syst. 93-D(7): 1976-1983 (2010)
2000 – 2009
- 2009
- [j10]Keiji Yasuda, Hirofumi Yamamoto, Eiichiro Sumita:
Training Set Selection for Building Compact and Efficient Language Models. IEICE Trans. Inf. Syst. 92-D(3): 506-511 (2009) - [j9]Hirofumi Yamamoto, Hideo Okuma, Eiichiro Sumita:
Imposing Constraints from the Source Tree on ITG Constraints for SMT. IEICE Trans. Inf. Syst. 92-D(9): 1762-1770 (2009) - [j8]Kei Hashimoto, Hirofumi Yamamoto, Hideo Okuma, Eiichiro Sumita, Keiichi Tokuda:
A Reordering Model Using a Source-Side Parse-Tree for Statistical Machine Translation. IEICE Trans. Inf. Syst. 92-D(12): 2386-2393 (2009) - [c46]Masao Utiyama, Hirofumi Yamamoto, Eiichiro Sumita:
Two methods for stabilizing MERT: NICT at IWSLT 2009. IWSLT 2009: 79-82 - [c45]Masao Utiyama, Hirofumi Yamamoto, Eiichiro Sumita:
Two methods for stabilizing MERT. IWSLT (Evaluation Campaign) 2009 - [c44]Michael Paul, Hirofumi Yamamoto, Eiichiro Sumita, Satoshi Nakamura:
On the Importance of Pivot Language Selection for Statistical Machine Translation. HLT-NAACL (Short Papers) 2009: 221-224 - 2008
- [j7]Hirofumi Yamamoto, Eiichiro Sumita:
Bilingual Cluster Based Models for Statistical Machine Translation. IEICE Trans. Inf. Syst. 91-D(3): 588-597 (2008) - [j6]Hideo Okuma, Hirofumi Yamamoto, Eiichiro Sumita:
Introducing a Translation Dictionary into Phrase-Based SMT. IEICE Trans. Inf. Syst. 91-D(7): 2051-2057 (2008) - [c43]Michael Paul, Hideo Okuma, Hirofumi Yamamoto, Eiichiro Sumita, Shigeki Matsuda, Tohru Shimizu, Satoshi Nakamura:
Multilingual Mobile-Phone Translation Services for World Travelers. COLING (Demos) 2008: 165-168 - [c42]Hajime Tsubaki, Keiji Yasuda, Hirofumi Yamamoto, Yoshinori Sagisaka:
Objective evaluation of second language learner2s translation proficiency using statistical translation measures. ExLing 2008: 217-220 - [c41]Saburo Okumura, Hirofumi Yamamoto, Yoshikazu Nishimura, Hironori Hiraoka, Kenzo Danjo, Hiroki Morimoto:
The Application of FRD with Avalanche Capability for Improvement of Power Conversion Efficiency in Output Rectifier and PFC. IAS 2008: 1-5 - [c40]Keiji Yasuda, Ruiqiang Zhang, Hirofumi Yamamoto, Eiichiro Sumita:
Method of Selecting Training Data to Build a Compact and Efficient Translation Model. IJCNLP 2008: 655-660 - [c39]Xinhui Hu, Hirofumi Yamamoto, Jinsong Zhang, Keiji Yasuda, Youzheng Wu, Hideki Kashioka:
Utilization of Huge Written Text Corpora for Conversational Speech Recognition. ISCSLP 2008: 97-100 - [c38]Masao Utiyama, Andrew M. Finch, Hideo Okuma, Michael Paul, Hailong Cao, Hirofumi Yamamoto, Keiji Yasuda, Eiichiro Sumita:
The NICT/ATR speech translation system for IWSLT 2008. IWSLT 2008: 77-84 - [c37]Keiji Yasuda, Andrew M. Finch, Hideo Okuma, Masao Utiyama, Hirofumi Yamamoto, Eiichiro Sumita:
System Description of NiCT-ATR SMT for NTCIR-7. NTCIR 2008 - [c36]Hirofumi Yamamoto, Hideo Okuma, Eiichiro Sumita:
Imposing Constraints from the Source Tree on ITG Constraints for SMT. SSST@ACL 2008: 1-9 - 2007
- [c35]Hirofumi Yamamoto, Eiichiro Sumita:
Bilingual Cluster Based Models for Statistical Machine Translation. EMNLP-CoNLL 2007: 514-523 - [c34]Andrew M. Finch, Etienne Denoual, Hideo Okuma, Michael Paul, Hirofumi Yamamoto, Keiji Yasuda, Ruiqiang Zhang, Eiichiro Sumita:
The NICT/ATR speech translation system for IWSLT 2007. IWSLT 2007: 103-110 - [c33]Hideo Okuma, Hirofumi Yamamoto, Eiichiro Sumita:
Introducing translation dictionary into phrase-based SMT. MTSummit 2007 - 2006
- [j5]Satoshi Nakamura, Konstantin Markov, Hiromi Nakaiwa, Gen-ichiro Kikui, Hisashi Kawai, Takatoshi Jitsuhiro, Jinsong Zhang, Hirofumi Yamamoto, Eiichiro Sumita, Seiichi Yamamoto:
The ATR multilingual speech-to-speech translation system. IEEE Trans. Speech Audio Process. 14(2): 365-376 (2006) - [c32]Xinhui Hu, Hirofumi Yamamoto, Gen-ichiro Kikui, Yoshinori Sagisaka:
Language modeling of Chinese personal names based on character units for continuous Chinese speech recognition. INTERSPEECH 2006 - [c31]Hirofumi Yamamoto, Gen-ichiro Kikui, Satoshi Nakamura, Yoshinori Sagisaka:
Speech recognition of foreign out-of-vocabulary words using a hierarchical language model. INTERSPEECH 2006 - [c30]Ruiqiang Zhang, Hirofumi Yamamoto, Michael Paul, Hideo Okuma, Keiji Yasuda, Yves Lepage, Etienne Denoual, Daichi Mochihashi, Andrew M. Finch, Eiichiro Sumita:
The niCT-ATR statistical machine translation system for the IWSLT 2006 evaluation. IWSLT 2006: 83-90 - 2005
- [j4]Takao Doi, Hirofumi Yamamoto, Eiichiro Sumita:
Example-based machine translation using efficient sentence retrieval based on edit-distance. ACM Trans. Asian Lang. Inf. Process. 4(4): 377-399 (2005) - [c29]Tatsuhiko Tomita, Yoshiyuki Okimoto, Hirofumi Yamamoto, Yoshinori Sagisaka:
Speech recognition of a named entity. ICASSP (1) 2005: 1057-1060 - [c28]Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto, Wai-Kit Lo:
A decoding algorithm for word lattice translation in speech translation. IWSLT 2005: 23-29 - [c27]Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto:
Using multiple recognition hypotheses to improve speech translation. IWSLT 2005: 30-36 - [c26]Takao Doi, Hirofumi Yamamoto, Eiichiro Sumita:
Graph-based Retrieval for Example-based Machine Translation Using Edit-distance. MTSummit (Workshop) 2005: 51-58 - 2004
- [c25]Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto, Frank K. Soong, Taro Watanabe, Wai Kit Lo:
A Unified Approach in Speech-to-Speech Translation: Integrating Features of Speech recognition and Machine Translation. COLING 2004 - [c24]Hirofumi Yamamoto, Gen-ichiro Kikui, Yoshinori Sagisaka:
Mis-recognized utterance detection using hierarchical language model. INTERSPEECH 2004: 1025-1028 - [c23]Ruiqiang Zhang, Gen-ichiro Kikui, Hirofumi Yamamoto, Frank K. Soong, Taro Watanabe, Eiichiro Sumita, Wai Kit Lo:
Improved spoken language translation using n-best speech recognition hypotheses. INTERSPEECH 2004: 1629-1632 - [c22]Satoshi Nakamura, Konstantin Markov, Takatoshi Jitsuhiro, Jinsong Zhang, Hirofumi Yamamoto, Gen-ichiro Kikui:
Multi-lingual speech recognition system for speech-to-speech translation. IWSLT 2004: 147-154 - 2003
- [j3]Hirofumi Yamamoto, Yoshinori Sagisaka:
Multiclass composite N-gram language model based on connection direction. Syst. Comput. Jpn. 34(7): 108-114 (2003) - [j2]Hirofumi Yamamoto, Shuntaro Isogai, Yoshinori Sagisaka:
Multi-class composite N-gram language model. Speech Commun. 41(2-3): 369-379 (2003) - [c21]Yoshihiko Ogawa, Hirofumi Yamamoto, Yoshinori Sagisaka, Gen-ichiro Kikui:
Word class modeling for speech recognition with out-of-task words using a hierarchical language model. INTERSPEECH 2003: 221-224 - [c20]Katsuhisa Fujinaga, Hiroaki Kokubo, Hirofumi Yamamoto, Gen-ichiro Kikui, Hiroshi Shimodaira:
Mis-recognized utterance detection using multiple language models generated by clustered sentences. INTERSPEECH 2003: 2709-2712 - [c19]Takao Doi, Eiichiro Sumita, Hirofumi Yamamoto:
Adaptation Using Out-of-Domain Corpus within EBMT. HLT-NAACL 2003 - 2002
- [c18]Gen-ichiro Kikui, Hirofumi Yamamoto:
Finding Translation Pairs from English-Japanese Untokenized Aligned Corpora. Speech-to-Speech Translation@ACL 2002: 23-30 - [c17]Hideharu Nakajima, Hirofumi Yamamoto, Taro Watanabe:
Language Model Adaptation with Additional Text Generated by Machine Translation. COLING 2002 - [c16]Takao Onoye, Yukihiro Nakamura, Atsuhito Shigiya, Keishi Chikamura, Kosuke Tsujino, Tomonori Izumi, Hirofumi Yamamoto:
System-Level Design of IEEE1394 Bus Segment Bridge. ISSS 2002: 74-79 - [c15]Toshiyuki Takezawa, Eiichiro Sumita, Fumiaki Sugaya, Hirofumi Yamamoto, Seiichi Yamamoto:
Toward a Broad-coverage Bilingual Corpus for Speech Translation of Travel Conversations in the Real World. LREC 2002 - 2001
- [c14]Hirofumi Yamamoto, Shuntaro Isogai, Yoshinori Sagisaka:
Multi-Class Composite N-gram Language Model for Spoken Language Processing Using Multiple Word Clusters. ACL 2001: 531-538 - [c13]Shuntaro Isogai, Katsuhiko Shirai, Hirofumi Yamamoto, Yoshinori Sagisaka:
Multi-class composite n-gram language model using multiple word clusters and word successions. INTERSPEECH 2001: 25-28 - [c12]Shigehiko Onishi, Hirofumi Yamamoto, Yoshinori Sagisaka:
Structured language model for class identification of out-of-vocabulary words arising from multiple wordclasses. INTERSPEECH 2001: 693-696 - [c11]Takatoshi Jitsuhiro, Hirofumi Yamamoto, Setsuo Yamada, Yoshinori Sagisaka:
New language models using phrase structures extracted from parse trees. INTERSPEECH 2001: 697-700 - 2000
- [c10]Koichi Tanigaki, Hirofumi Yamamoto, Yoshinori Sagisaka:
A hierarchical language model incorporating class-dependent word models for OOV words recognition. INTERSPEECH 2000: 123-126 - [c9]Shuwu Zhang, Hirofumi Yamamoto, Yoshinori Sagisaka:
An embedded knowledge integration for hybrid language modelling. INTERSPEECH 2000: 182-195 - [c8]Hirofumi Yamamoto, Kouichi Tanigaki, Yoshinori Sagisaka:
A language model for conversational speech recognition using information designed for speech translation. INTERSPEECH 2000: 190-193 - [c7]Yoshinori Sagisaka, Hirofumi Yamamoto, Minoru Tsuzaki, Hiroaki Kato:
Rules, but what for? - rule description as efficient and robust abstraction of corpora and optimal fitting to applications -. INTERSPEECH 2000: 448-451 - [c6]Hideharu Nakajima, Yoshinori Sagisaka, Hirofumi Yamamoto:
Pronunciation variants description using recognition error modeling with phonetic derivation hypotheses. INTERSPEECH 2000: 1093-1096
1990 – 1999
- 1999
- [c5]Hirofumi Yamamoto, Yoshinori Sagisaka:
Multi-class composite N-gram based on connection direction. ICASSP 1999: 533-536 - [c4]Hirofumi Yamamoto, Yoshinori Sagisaka:
Part-of-speech n-gram and word n-gram fused language model. EUROSPEECH 1999: 1803-1806 - 1998
- [j1]Hajime Tsukada, Hirofumi Yamamoto, Toshiyuki Takezawa, Yoshinori Sagisaka:
Reliable utterance segment recognition by integrating a grammar with statistical language constraints. Speech Commun. 26(4): 299-309 (1998) - [c3]Hajime Tsukada, Hirofumi Yamamoto, Toshiyuki Takezawa, Yoshinori Sagisaka:
Grammatical word graph re-generation for spontaneous speech recognition. ICSLP 1998 - 1997
- [c2]Hajime Tsukada, Hirofumi Yamamoto, Yoshinori Sagisaka:
Integration of grammar and statistical language constraints for partial word-sequence recognition. EUROSPEECH 1997: 2759-2762 - 1996
- [c1]Tohru Shimizu, Hirofumi Yamamoto, Hirokazu Masataki, Shoichi Matsunaga, Yoshinori Sagisaka:
Spontaneous dialogue speech recognition using cross-word context constrained word graphs. ICASSP 1996: 145-148
Coauthor Index
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