What's New

W.Sakata was awarded an incentive award of IPSJ Kansai-Branch Convention at IPSJ Kansai-Branch Convention with the following paper. (9/26)

  • W.Sakata, T.Shibata and S.Kurohashi: Improving Word Representations using Word Relational Knowledge and Patterns

New Japanese Morphology Analyzer JUMAN++ has been released. (9/23)

We will present following papers at COLING2016 (2016/12/11-6) (9/21)

  • Kenji Yamauchi and Yugo Murawaki: Contrasting Vertical and Horizontal Transmission of Typological Features
  • Mo Shen, Wingmui Li, HyunJeong Choe, Chenhui Chu, Daisuke Kawahara and Sadao Kurohashi: Consistent Word Segmentation, Part-of-Speech Tagging and Dependency Labelling Annotation for Chinese Language

We had a lab trip to Ise and Shima. (9/3-4)

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We will present following papers at EMNLP2016 (2016/11/1-5) (7/31)

  • Naoki Otani, Toshiaki Nakazawa, Daisuke Kawahara and Sadao Kurohashi: IRT-based Aggregation Model of Crowdsourced Pairwise Comparison for Evaluating Machine Translations
  • Toshiaki Nakazawa and Sadao Kurohashi: Insertion Position Selection Model for Flexible Non-Terminals in Dependency Tree-to-Tree Machine Translation

Research Overview

Language is the most reliable medium of human intellectual activities. Our objective is to establish the technology and academic discipline for handling and understanding language, in a manner that is as close as possible to that of humans, using computers. These include syntactic language analysis, semantic analysis, context analysis, text comprehension, text generation and dictionary systems to develop various application systems for machine translation and information retrieval.

Search Engine Infrastructure based on Deep Natural Language Processing

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The essential purpose of information retrieval is not to retrieve just a relevant document but to acquire the information or knowledge in the document. We have been developing a next-generation infrastructure of information retrieval on the basis of the following techniques of deep natural language processing: precise processing based not on words but on predicate-argument structures, identifying the variety of linguistic expressions and providing a bird's-eye view of search results via clustering and interaction.

Machine Translation

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To bring automatic translation by computers to the level of human translation, we have been studying next-generation methodology of machine translation on the basis of text understanding and a large collection of translation examples. We have already accomplished practical translation on the domain of travel conversation, and constructed a translation-aid system that can be used by experts of patent translation.

Fundamental Studies on Text Understanding

To make computers understand language, it is essential to give computers world knowledge. This was a very hard problem ten years ago, but it has become possible to acquire knowledge from a massive amount of text in virtue of the drastic progress of computing power and network. We have successfully acquired linguistic patterns of predicate-argument structures from automatic parses of 7 billion Japanese sentences crawled from the Web using grid computing machines. By utilizing such knowledge, we study text understanding, i.e., recognizing the relationships between words and phrases in text.

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