Hitoshi Isahara

J-GLOBAL         Last updated: Sep 26, 2019 at 11:44
Hitoshi Isahara

Research Areas


Published Papers

Hozumi Tanaka,Hitoshi Isahara,Hideki Yasukawa
New Generation Comput.   1(2) 179-185   Feb 1983   [Refereed]
Hitoshi Isahara,Shun Ishizaki
Proceedings of the 11th International Conference on Computational Linguistics, COLING '86, Bonn, Germany, August 25-29, 1986   244-246   1986   [Refereed]
IPSJ Magazine   27(8) 897-905   Aug 1986
Isahara Hitoshi, Ishizaki Shun, Handa Ken-ichi, Hashida Koichi
全国大会講演論文集   33(2) 1225-1226   Oct 1986
Ishizaki Shun, Isahara Hitoshi, Uchida Yuriko, Hashida Koichi, Motoyoshi Fumio
全国大会講演論文集   33(2) 1779-1780   Oct 1986
Bulletin of the Electrotechnical Laboratory   52(4) p551-564   Apr 1988
Isahara Hitoshi, Ishizaki Shun
Journal of Japanese Society for Artificial Intelligence   3(5) 607-616   May 1988
A natural language understanding system is described which extracts syntactical and semantic information from Japanese newspaper articles. The understanding system parses and understands the input sentences and constructs an intermediate represent...
IPSJ Journal   29(6) 570-580   Jun 1988
Ikeda Takashi, Isahara Hitoshi, Ishizaki Shun
全国大会講演論文集   38(1) 281-282   Mar 1989
Isahara Hitoshi, Ikeda Takashi, Ishizaki Shun
全国大会講演論文集   38(1) 279-280   Mar 1989
Uchida Yuriko, Ishizaki Shun, Isahara Hitoshi
全国大会講演論文集   38(1) 245-246   Mar 1989
Oba Kenji, Itahashi Shuichi, Motoyoshi Fumio, Isahara Hitoshi, Yokoyama Shoichi, Ishizaki Shun
全国大会講演論文集   38(1) 372-373   Mar 1989
Bulletin of the Electrotechnical Laboratory   53(5) p496-514   May 1989
Bulletin of the Electrotechnical Laboratory   53(5) p462-484   May 1989
IPSJ Magazine   30(10) 1240-1249   Oct 1989
Isahara Hitoshi, Ishizaki Shun
全国大会講演論文集   39(1) 642-643   Oct 1989
Ishizaki Shun, Isahara Hitoshi, Tokunaga Takenobu, Tanaka Hozumi
Journal of Japanese Society for Artificial Intelligence   4(6) 660-670   Nov 1989
Bulletin of the Electrotechnical Laboratory   54(3) p300-316   Mar 1990
Bulletin of the Electrotechnical Laboratory   55(10) p1164-1172   Oct 1991
Isahara Hitoshi, Shinnou Hiroyuki, Yamabana Kiyoshi, Moriguchi Minoru, Nomura Hirosato
IPSJ SIG Notes   93(61) 81-88   Jul 1993
This paper describes a method and associated corpus for evaluating the translation quality of English to Japanese machine translation systems that has been developed by the Japan Electronic Industry Development Association (JEIDA) Machine Translat...
人工知能学会全国大会論文集 = Proceedings of the Annual Conference of JSAI   7 429-432   Jul 1993
Isahara Hitoshi
全国大会講演論文集   48(3) 83-84   Mar 1994
Kawada Ryoichi, Inui Hiroko, Isahara Hitoshi
IPSJ SIG Notes   94(47) 121-128   May 1994
In processing the Japanese sentences, verbs play important roles in disambiguation. We are developing a concept dictionary for verbs to be used for the Incremental Natural Language Understanding. This Dictionary describes information regarding con...
Ishihara Hitoshi, Ishizaki Shun
IPSJ Journal   35(6) 1029-1041   Jun 1994
A concept dictionary which uses a language independent concept structure to represent knowledge is being developed. Here, concepts are templets which generate particular instances and these instances represent each object extracted by the language...
Shinnou Hiroyuki, Isahara Hitoshi
IPSJ Journal   35(11) 2258-2264   Nov 1994
Connective expression is a kind of idiomatic phrase corresponding to postposition. Typical example is "NI-NANSI-TE". Generally it is advantageous to handle these expressions as one word, but it is difficult to pick up these expressions. Because it...
Journal of Natural Language Processing   2(3) 73-86   1995
This paper presents an alternative method to measure word association strength on predicative patterns in order to automatically extract predicative frozen patterns and idioms from a corpus. For this aim, mutual information is traditionally used. ...
Machine-Understanding Model of Rhetorical Tautology Using Saliency
Osamu Tkizawa,Hitoshi Isahara
Natural Language Processing Pacific Rim Symposium 95   77-82   Jan 1995   [Refereed]
Shinnou Hiroyuki, Isahara Hitoshi
IPSJ Journal   36(1) 32-40   Jan 1995
This paper presents a new method to extract frozen patterns to act as a postpositional particle automatically from a Japanese corpus. It should be more effective to handle a frozen pattern as one word. Therefore, it is necessary to include frozen ...
Shinnou Hiroyuki, Isahara Hitoshi
Journal of Japanese Society for Artificial Intelligence   10(3) 429-435   May 1995
In this paper, we describe a method to automatically extract Japanese auxiliary phrases from a corpus. The auxiliary phrase is a kind of idiomatic expression corresponding to auxiliary verb or postpositional particle. Typical examples are "にかんして" ...
JEIDA'S Test-Sets for Quality Evaluation of MT Systems -Technical Evaluation from the Developer's Point of View
Hitoshi Isahara
   Jul 1995   [Refereed]
SHINNOU Hiroyuki, ISAHARA Hitoshi
自然言語処理 = Journal of natural language processing   2(3) 73-86   Jul 1995
Overview of the Intelligent Processing Section of the Communications Research Laboratory
Hitoshi Isahara
Simposium on Natural Language Processing      Aug 1995   [Refereed]
Shinnou Hiroyuki, Isahara Hitoshi
IPSJ Journal   36(8) 1845-1854   Aug 1995
Idiomatic expressions are useful in many natural language systems and in linguiststics, but collecting of them is costly work. There have been some attempts to extract idioms from a corpus automatically. However, for predicative idioms, their meth...
Hitoshi Isahara,Yuriko Uchida
Systems and Computers in Japan   26(14) 37-53   Nov 1995   [Refereed]
Inui Hiroko, Motoyoshi Fumio, Isahara Hitoshi
IPSJ SIG Notes   95(110) 103-110   Nov 1995
Japanese "Sahen" verbs are those composed of morphemes, Chinese characters followed by "suru. " This paper reports a categorization of Japanese Sahen verbs based on their morphological structure. By morphological analysis of Sahen verbs, one can e...
Takizawa Osamu, Isahara Hitoshi
IPSJ SIG Notes   95(110) 13-20   Nov 1995
This report proposes a method for mechanically detecting tautological expressions in the Japanese language. Tautological expressions are defined here as "rhetorics in which same words are appeared at two positions in one sentence", e.g., "A promis...
Qing Ma,Hitoshi Isahara,Hiromi Ozaku
Artificial Neural Networks - ICANN 96, 1996 International Conference, Bochum, germany, July 16-19, 1996, Proceedings   275-280   1996   [Refereed]
Nomura Hirosato, Isahara Hitoshi, Tokugawa Tatenobu, Nakamura Teigo
IPSJ Magazine   37(1) 1-9   Jan 1996
Shirado Tamotsu, Isahara Hitoshi
Proceedings of the IEICE General Conference   1996(1)    Mar 1996
Intelligent NetWork News Reader -Selecting articles necessary for each user
Hiromi Ozaku,Hitoshi Isahara
Workshop on Information Retrieval for Oriental Lanquages (IROL’96)      Jun 1996   [Refereed]
This paper describes an experiment of the development of the Intelligent Network News Reader (INNR) at the KARC The INNR is attewpted to extract news articles which attract user interest without any Keyword-like queries.
Journal of Natural Language Processing   3(3) 83-102   Jul 1996
This paper describes a method of evaluating quality for developers of machine translation systems to easily check imperfections in their own systems. Our method employs test-sets in which example sentences, their model translations, yes/no questio...
ISAHARA Hitoshi, UCHINO Hajime, OGINO Shiho, OKUNISHI Toshiyuki, KINOSHITA Satoshi, SHIBATA Shogo, SUGIO Toshiyuki, TAKAYAMA Yasuhiro, DOI Shin'ichi, NAGANO Tadashi, NARITA Masumi, NOMURA Hirosato
自然言語処理 = Journal of natural language processing   3(3) 83-102   Jul 1996
Toyoura Jun, Tokunaga Takenobu, Isahara Hitoshi, Oka Ryuichi
IPSJ SIG Notes   96(65) 27-32   Jul 1996
The Real World Computing Database Working Group has built a Text Database tagged with UDC (Universal Decimal Classification) Code for about 30,000 newspaper articles. This database is available to public and free for research use. There is no such...
Toyoura Jun, Tokunaga Takenobu, Isahara Hitoshi, Oka Ryuichi
IEICE technical report. Natural language understanding and models of communication   96(157) 27-32   Jul 1996
The Real World Computing Database Working Group has built a Text Database tagged with UDC (Universal Decimal Chassification) Code for about 30,000 newspaper articles.This database is available to public and free for research use. There is no such ...
On Computational Processing of Rhetorical Expressions-Puns,Ironies and Tautologies
Oasamu Takizawa,Masuzo Yanagida,Akira Ito,Hitoshi Isahara
International Workshop on Computational Humor   39-52   Sep 1996   [Refereed]
Lexical Knowledge from Large Corpora and its Application to Text Generation
Hitoshi Isahara,Yuko Inui,Yuriko Uchida
AMTA-96 Association for Machine Translation in the Americas      Oct 1996   [Refereed]
Hitoshi Isahara,Hiromi Ozaku
IUI 1997   237-240   1997   [Refereed]
OZAKU Hiromi, UCHIMOTO Kiyotaka, ISAHARA Hitoshi
IPSJ SIG Notes   97(4) 21-28   Jan 1997
As the Internet has become very popular, the number of articles generated everyday is increasing rapidly. To make good use of the net work news, much research has been done on extracting information from it. And we have been developing the Intelli...
SHIRADO Tamotsu, ISAHARA Hitoshi
Proceedings of the IEICE General Conference   1997(1)    Mar 1997
Okunishi T., Kanaoka H., Saito Y., Fujita S., Honma S., Matsui K., Doi S., Isahara H.
全国大会講演論文集   54(4) 331-332   Mar 1997

Books etc

Advances in Natural Languages Processing
Hitoshi Isahara,Kyoko Kanzaki (Part:Joint Work)
Springer   Oct 2012   
Advances in Generative Lexicon Theory
Pustejovsky, J., Bouillon, P., Isahara, H., Kanzaki, K., Lee, C. (Part:Joint Work)
Springer   Aug 2012   
Mining Patents for Paralel Corpora
Masao Utiyama Hitoshi Isahara (Part:Joint Work)
The MIT Press   Feb 2009   
Japanese-English aligned bilingual corpora
Hitoshi Isahara、Masahiko Haruno (Part:Joint Work)
Kluwer   Dec 2000   


特許US Patent No: 7,613,601 : Method for predicting negative example, system for detecting incorrect wording using negative example prediction
Hitoshi Isahara
特許US Patent No: 7,752,033 : Text generation method and text generation device
Hitoshi Isahara
特許US Patent No: 7,792,575 : Language processing function measuring device
Hitoshi Isahara
特許US Patent No: 8,010,342 : Word Usage Analyzer
Hitoshi Isahara
特許韓国918338 : Third language text generating algorithm by multi-lingual text inputting and device and program
Hitoshi Isahara