Retrieval system, information processing equipment and similarity arithmetical unit, search method, program and record medium

摘要

The retrieval system and the like which is suited for the offer of the service which pays attention to the locality of manner of access to information with network is offered. The node is the information processing equipment which is connected mutually by network. For example as for each node, that user when it accesses the Web server et. al, index for search concerning the web page which is accessed is kept, conduct past record such as the past record of URL which is accessed is kept. In addition, each node compares conduct past record with the connected possible node groups, decides the neighbor node. When search condition is input into node 41, search request is done neighbor node vis-a-vis 43 and 47. The node 43 which receives search request and 47 does search processing, transmits the search result to node 41. Totaling the search result, it indicates the node 41 which receives the search result, in the user.