Method for Searching Patent Document by Applying Degree of Similarity and System Thereof

A system for providing a document search service by applying degree of similarity, comprising:

• a keyword input unit configured to receive at least one search keyword from a user of the service;
• a database unit configured to store document data of the document;
• a document search unit configured to search the document previously stored in the database unit, by the search keyword;
• and
• a similarity evaluation unit configured to evaluate a degree of similarity to the search keyword on the document that is searched by the document search unit, wherein the degree of similarity is evaluated by measuring at least one degree among a degree of appearance frequency of the search keyword in the document, a degree of proximity between the search keywords, and a degree of word order between the search keywords.

A processor for providing a document search service by applying degree of similarity, comprising:

• a recording medium capable of mechanical reading;
• and
• a program code stored in the recording medium and capable of mechanical reading,
• wherein the program code includes a process comprising:
• (a) receiving at least one search keyword from a user of the service;
• (b) searching a document previously stored in a database, by the search keyword;
• and
• (c) evaluating a degree of similarity to the search keyword on the document that is searched by the search keyword, wherein the degree of similarity is evaluated by measuring at least one degree among a degree of appearance frequency of the search keyword in the document, a degree of proximity between the search keywords, and a degree of word order between the search keywords.