| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize enhancement of retrieval accuracy and circulate a Web page (URL) attracting users' attention in short blog services among users on the WWW. <P>SOLUTION: A crawl server (1) comprises: reference frequency calculation means (11) which accesses a short blog server (100) by a predetermined cycle and calculates a reference frequency of URL to which a short blog posted in short blog services has referred to, for each URL; schedule change means (12) which adjusts an access cycle to the URL shorter as the calculated reference frequency has increased by an amount equal to or more than a predetermined value; and a crawler (21) which accesses the URL by the adjusted access cycle and acquires related data. <P>COPYRIGHT: (C)2013,JPO&INPIT |
