| 摘要 |
PROBLEM TO BE SOLVED: To easily realize high level retrieval by dividing an inputted retrieval word into word units, generating retrieval keywords in the number decided according to the number of divided words of the divided word units, and operating document retrieving processing for the number by using the generated retrieval keywords. SOLUTION: A controller 3 is provided with a controlling part 300, document retrieval processing block 310, retrieval keyword generation block 320, and buffer part 330. The automatic retrieval keyword generation block 320 divides an inputted retrieval keyword into words, reunite them, and generates the retrieval keyword by referring to a dictionary 2. The document retrieval processing block 310 retrieves a pertinent document from documents to be retrieved stored in an outside storage device 4. Thus, the inputted retrieval word is word-divided, and automatically divided and reunited to various character length or patters. Therefore, the retrieval can be attained by the retrieval keyword developed into a further wide extended description pattern. |
