JPH0510703B2 - - Google Patents

Info

Publication number
JPH0510703B2
JPH0510703B2 JP22725184A JP22725184A JPH0510703B2 JP H0510703 B2 JPH0510703 B2 JP H0510703B2 JP 22725184 A JP22725184 A JP 22725184A JP 22725184 A JP22725184 A JP 22725184A JP H0510703 B2 JPH0510703 B2 JP H0510703B2
Authority
JP
Japan
Prior art keywords
word
words
semantic
dictionary
analysis means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP22725184A
Other languages
English (en)
Other versions
JPS61105671A (ja
Inventor
Yasunori Katayama
Kunio Nakanishi
Yutaka Yoshiura
Kotaro Hirasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP59227251A priority Critical patent/JPS61105671A/ja
Priority to CA000494041A priority patent/CA1235817A/en
Priority to DE3587993T priority patent/DE3587993T2/de
Priority to KR1019850007969A priority patent/KR920003498B1/ko
Priority to EP85113695A priority patent/EP0180888B1/en
Publication of JPS61105671A publication Critical patent/JPS61105671A/ja
Priority to US07/277,526 priority patent/US5109509A/en
Publication of JPH0510703B2 publication Critical patent/JPH0510703B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/20—Natural language analysis
    • G06F40/205—Parsing
    • G06F40/211—Syntactic parsing, e.g. based on context-free grammar [CFG] or unification grammars
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/20—Natural language analysis
    • G06F40/237—Lexical tools
    • G06F40/242—Dictionaries
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/20—Natural language analysis
    • G06F40/268—Morphological analysis
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/30—Semantic analysis
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/40—Processing or translation of natural language
    • G06F40/42—Data-driven translation
    • G06F40/47—Machine-assisted translation, e.g. using translation memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Artificial Intelligence (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Machine Translation (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Description

【発明の詳細な説明】
〔発明の利用分野〕 本発明は、自然言語処理装置に係り、特に辞書
に登録されていない単語（以下、未定義語と称す
る。）を含む文章を処理するのに好適な自然言語
処理装置に関する。 〔発明の背景〕 自然言語の高度な処理を行なう場合、一般的に
文章の構文解析を行ない、これを基に、文章作
成・編集を行なつている。しかし、自然言語処理
を行なうためには、文章を構成する可能性のある
単語が全て辞書に登録されているとは限らずどん
な大きな辞書を準備しても辞書に登録されていな
い未定義語が文章中に現われることが多い。この
問題を解決するものとして特開昭58−175074〜
175076号公報に示されるように、辞書引きに失敗
した未定義語に対し、辞書中に存在する登録され
ている語に含まれる同義語をユーザに入力させ、
その対応から、構文解析用の情報を付加する方法
を採用している。しかし、この方法では辞書中に
登録されている同義語等をあらかじめユーザが記
憶しておくか、辞書に登録されている全単語のリ
ストを出力し、その中からユーザ自らが同義語等
を抽出する必要があり、高度の処理を行なう場合
には、登録語数が増加し、ユーザの負担は激増し
てしまい、簡易かつ効果的に自然言語処理を行な
うことができなかつた。 〔発明の目的〕 本発明の目的は、前記問題点に鑑み、高度な自
然言語処理を行なう装置において、未定義語が出
現した場合でも、装置から同義語の情報をユーザ
に与えることにより限られた記憶容量の辞書で、
高度な自然言語処理を行なう実用的な自然言語処
理装置を提供するにある。 〔発明の概要〕 本発明の第１の特徴は、未定義語が出現した場
合、単語の意味的概念を決定する意味解析手段に
て、未定義語の上位概念を求め、この上位概念に
従い単語を階層化して登録している単語階層辞書
を用いて、下位概念にあたる単語群を抽出し、そ
の中から、未定義語に対応する単語を選択するよ
うにしたものである。 本発明の第２の特徴は、未定義語が出現した場
合、単語の意味的概念を決定する意味解析手段に
て、未定義語の上位概念を求め、この上位概念に
従い単語を階層化して登録している単語階層辞書
を用いて、下位概念にあたる単語群を抽出し、そ
れを表示装置に表示して、ユーザにその中から同
義語を選択させるようにしたことである。 さらに、本発明の第３の特徴は未定義語が出現
した場合、単語の意味的概念を決定する意味解析
手段にて、未定義語の上位概念を求め、この上位
概念に従い単語を階層化して登録している単語階
層辞書を用いて、下位概念にあたる単語群を抽出
し、抽出した下位概念の単語群の中から入力され
た文字列の意図に合致する単語を推論して選択す
る推論手段より、同義語を選択し、未定義語を選
択した同義語に置換するようにしたことである。 〔発明の実施例〕 以下、本発明の一実施例を図面を用いて説明す
る。 第１図は、本発明の全体構成を示すもので、ユ
ーザは入力装置１（例えばキーボオートド、音声
認識装置、手書文字入力装置等）により自然言語
（例えば日本語）を処理装置２に入力し、処理装
置２は自然言語にする処理を行ない、その内容や
結果を表示装置３に表示しユーザに対し情報を与
える質問応答形式の知的ガイダンスシステムであ
る。ここで、処理装置２は、見出し語辞書８、接
続関係辞書９、活用語尾辞書１０及びこれらの辞
書の情報を用いて入力文を単語に分割する形態素
解析手段４、文法規則辞書１１及びこの辞書を用
いて入力文の文法的な構成を求める構文解析手段
５、格辞書１２と単語階層辞書１３及びこれらの
辞書を用いて入力文の意味を抽出する意味解析手
段６、応答文のいくつかのパターンを用意した文
パターン辞書１４及びこの辞書を用いて文を生成
する文生成手段７から構成される。 次に、第２図ａに示すように、「ミギシタノバ
シヨニクウハクイキヲサクセイシタイ。」という
べた書の日本語の文章が入力文として入力された
場合を例に、各々の処理について詳述する。 (1) 形態素解析 まず、形態素解析は、見出し語辞書８、接続関
係辞書９、活用語尾辞書１０を用いて、入力文の
文字列から見出し語が存在するか否かを見出し、
接続関係をチエツクして、単語に分割するもので
ある。ここで、表１，表２，表３にそれぞれ、見
出し語辞書８、接続関係辞書９、活用語尾辞書１
０の一例を示す。
【表】
【表】

Claims (1)

  1. 【特許請求の範囲】 １ 入力された自然言語の文字列を単語に分割す
    る形態素解析手段と、単語の並びが文法規則に合
    致するか否かを判断する構文解析手段を有し、文
    字列の処理を行なう自然言語処理装置において、 文法規則に合致した単語間の意味的な役割を登
    録する格辞書と、前記構文解析手段からの出力を
    格辞書を用いて単語の意味的概念を決定する意味
    解析手段と、単語の意味的概念に従い上位から下
    位に単語を分類して登録する単語階層辞書と、未
    定義語を含む文字列が入力された場合、前記意味
    解析手段により未定義語の意味的概念を求め、前
    記単語階層辞書から未定義語の下位概念にあたる
    単語群を抽出し、前記抽出された単語群の中から
    前記未定義語に対応する単語を選択する選択手段
    とを設け、前記選択手段により選択された単語を
    用いて前記文字列の処理を行なうことを特徴とす
    る自然言語処理装置。 ２ 入力された自然言語の文字列を単語に分割す
    る形態素解析手段と、単語の並びが文法規則に合
    致するか否かを判断する構文解析手段と、文字列
    の処理の内容及び結果を表示する表示装置を有
    し、文字列の処理を行なう自然言語処理装置にお
    いて、 文法規則に合致した単語間の意味的な役割を登
    録する格辞書と、前記構文解析手段からの出力を
    格辞書を用いて単語の意味的概念を決定する意味
    解析手段と、単語の意味的概念に従い上位から下
    位に単語を分類して登録する単語階層辞書と、前
    記表示装置に表示された内容を選択するための選
    択指示手段とを設け、未定義語を含む文字列が入
    力された場合、前記意味解析手段により未定義語
    の意味的概念を求め、前記単語階層辞書から未定
    義語の意味的概念の下位概念にあたる単語群を抽
    出し、前記抽出された単語群を前記表示装置に表
    示し、前記表示された単語群の中から前記選択指
    示手段により同義語を選択し、前記選択された同
    義語を用いて文字列を処理することを特徴とする
    自然言語処理装置。 ３ 入力された自然言語の文字列を単語に分割す
    る形態素解析手段と、単語の並びが文法規則に合
    致するか否かを判断する構文解析手段を有し、文
    字列の処理を行なう自然言語処理装置において、 文法規則に合致した単語間の意味的な役割を登
    録する格辞書と、前記構文解析手段からの出力を
    格辞書を用いて単語の意味的概念を決定する意味
    解析手段と、単語の意味的概念に従い上位から下
    位に単語を分類して登録する単語階層辞書と、単
    語階層辞書に下位概念として登録されている単語
    群の中から入力された文字列の意図に合致する単
    語を推論して選択する推論手段とを設け、未定義
    語を含む文字列が入力された場合、意味解析手段
    により未定義語の意味的概念を求め、単語階層辞
    書から意味的概念の下位概念にあたる単語群を抽
    出し、推論手段により抽出した下位概念の単語群
    の中から入力された文字列の意図に合致する同義
    語を選択し、未定義語を選択した同義語に置換す
    るようにしたことを特徴とする自然言語処理装
    置。
JP59227251A 1984-10-29 1984-10-29 自然言語処理装置 Granted JPS61105671A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP59227251A JPS61105671A (ja) 1984-10-29 1984-10-29 自然言語処理装置
CA000494041A CA1235817A (en) 1984-10-29 1985-10-28 Method and apparatus for natural language processing
DE3587993T DE3587993T2 (de) 1984-10-29 1985-10-28 Verfahren und Gerät zur Natursprachenverarbeitung.
KR1019850007969A KR920003498B1 (ko) 1984-10-29 1985-10-28 자연언어 처리방법 및 장치
EP85113695A EP0180888B1 (en) 1984-10-29 1985-10-28 Method and apparatus for natural language processing
US07/277,526 US5109509A (en) 1984-10-29 1988-11-28 System for processing natural language including identifying grammatical rule and semantic concept of an undefined word

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59227251A JPS61105671A (ja) 1984-10-29 1984-10-29 自然言語処理装置

Publications (2)

Publication Number Publication Date
JPS61105671A JPS61105671A (ja) 1986-05-23
JPH0510703B2 true JPH0510703B2 (ja) 1993-02-10

Family

ID=16857884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59227251A Granted JPS61105671A (ja) 1984-10-29 1984-10-29 自然言語処理装置

Country Status (6)

Country Link
US (1) US5109509A (ja)
EP (1) EP0180888B1 (ja)
JP (1) JPS61105671A (ja)
KR (1) KR920003498B1 (ja)
CA (1) CA1235817A (ja)
DE (1) DE3587993T2 (ja)

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