US 2004/0073548 A1 · System and method of extracting event sentences from documents

Abstract

Disclosed are a system and method of extracting event sentences from documents. A language processing section 10 performs a morphological analysis and named entity recognition for an input document set. A document-set learning section 20 extracts verb, noun and noun phrase features from the language-processed result, and selects important features and stores them in a database by calculating weights for the respective features. An event sentence extraction section 30 comparatively analyzes the result obtained by language-processing the input document in the language processing section 10 and the result obtained from learning of the document-set learning section 20 to calculate the weights for the respective sentences in the input document and so extract the event sentences depending upon the extracting condition. Therefore, useful data implying the information dependant upon the domain is easily selected and obtained from the document.

Claims11

Dependent claims

A system of extracting event sentences from a document, the system comprising:

a language processing section for performing a morphological analysis and named entity recognition for an input learning document set related to a specific subject of the target domain;
a document-set learning section for extracting specific features from a result obtained from the language processing section for the learning document set, and for selecting important features and storing them in a database;
and
an event sentence extraction section for extracting the event sentences from an input document by use of the result obtained by language-processing the input document in the language processing section and the result obtained from learning of the document-set learning section.

1 more element

A method and system of extracting event sentences from a document, the method comprising the steps of:

designating and inputting a document set related to a specific subject of the target domain;
performing a morphological analysis and named entity recognition for the input documents in a language processing section;
extracting verb and noun features from the language-processed results obtained by the language processing section in a document-set learning section, and selecting important features and storing them in a database;
and
extracting event sentences from an input document by use of the language-processed results obtained by the language processing section and a result of learning the document set for a specific domain obtained by the document-set learning section.

2 more elements

Dependencies are inferred from the claim text.

System and method of extracting event sentences from documents

Life of this patent

System and method of extracting event sentences from documents

Life of this patent

Abstract

Claims11