Page reranking system and page reranking program to improve search result

摘要

A page reranking system is a system that grants renewed page rankings to multiple Web pages that are obtained as search result pages in compliance with a user's query and to which page rankings are granted by calculating a change rate of a page content between multiple versions of each of the Web pages, and comprises a reranking device that grants the renewed page ranking to each of the Web pages based on the change rate of the page content between multiple versions calculated for each of the Web pages.