| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that if an error exists in a keyword to be used for information search, a search result cannot be obtained in an information providing device using a database. SOLUTION: A retrieval server 20 receives a search string from a user terminal device 16. A search section 22 searches an address information storage section 24 by using a search string as a key. When a search result is not obtained, a similar word request section 26 transmits a search string to a word retrieval device 100. The word retrieval device 100 extracts a similar word out of words contained in a dictionary based on the attribute of the search string and provides it to the similar word request section 26. A similar word providing section 28 transmits the similar word to the user terminal device 16. A user chooses the similar word to be used for search from the similar words. The search section 22 performs search again based on chosen similar word. Thereby, even when an error exists in the search string, search processing can be performed based on the similar word. COPYRIGHT: (C)2005,JPO&NCIPI
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