Hirofumi YAMAMOTO


Constraining a Generative Word Alignment Model with Discriminative Output
Chooi-Ling GOH Taro WATANABE Hirofumi YAMAMOTO Eiichiro SUMITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/07/01
Vol. E93-D  No. 7  pp. 1976-1983
Type of Manuscript:  PAPER
Category: Natural Language Processing
Keyword: 
word alignmentdiscriminative modelgenerative modelhybridSMT
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A Reordering Model Using a Source-Side Parse-Tree for Statistical Machine Translation
Kei HASHIMOTO Hirofumi YAMAMOTO Hideo OKUMA Eiichiro SUMITA Keiichi TOKUDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/12/01
Vol. E92-D  No. 12  pp. 2386-2393
Type of Manuscript:  Special Section PAPER (Special Section on Natural Language Processing and its Applications)
Category: Machine Translation
Keyword: 
phrase-based statistical machine translationreordering modelparse-treesyntactic information
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Imposing Constraints from the Source Tree on ITG Constraints for SMT
Hirofumi YAMAMOTO Hideo OKUMA Eiichiro SUMITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/09/01
Vol. E92-D  No. 9  pp. 1762-1770
Type of Manuscript:  PAPER
Category: Natural Language Processing
Keyword: 
statistical machine translationword reorderingdistortion modelITG constraints
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Training Set Selection for Building Compact and Efficient Language Models
Keiji YASUDA Hirofumi YAMAMOTO Eiichiro SUMITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/03/01
Vol. E92-D  No. 3  pp. 506-511
Type of Manuscript:  PAPER
Category: Natural Language Processing
Keyword: 
speech translationsentence clusteringlanguage modelinglarge size corpusTC-STAR
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Introducing a Translation Dictionary into Phrase-Based SMT
Hideo OKUMA Hirofumi YAMAMOTO Eiichiro SUMITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/07/01
Vol. E91-D  No. 7  pp. 2051-2057
Type of Manuscript:  PAPER
Category: Natural Language Processing
Keyword: 
statistical machine translationtranslation dictionary
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Bilingual Cluster Based Models for Statistical Machine Translation
Hirofumi YAMAMOTO Eiichiro SUMITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 588-597
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Applications
Keyword: 
statistical machine translationdomain specific modeldomain estimationsentence clustering
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Language Modeling Using Patterns Extracted from Parse Trees for Speech Recognition
Takatoshi JITSUHIRO Hirofumi YAMAMOTO Setsuo YAMADA Genichiro KIKUI Yoshinori SAGISAKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/03/01
Vol. E86-D  No. 3  pp. 446-453
Type of Manuscript:  Special Section PAPER (Special Issue on Speech Information Processing)
Category: Speech and Speaker Recognition
Keyword: 
speech recognitionlanguage modeln-gram modelparserpattern model
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