@article{oai:nagoya.repo.nii.ac.jp:00013126,
 author = {HATASHIMA, Takashi and MOTODA, Toshihiro and YAMAMOTO, Shuichiro},
 issue = {4},
 journal = {IEICE transactions on information and systems},
 month = {Apr},
 note = {We describe an index for estimating the level of interest in Web pages. This "time-based interest" (TBI) index combinates an equation reflecting page accesses and an equation reflecting the decrease in interest over time. These equations work simultaneously by using a parameter that is based on the time since the last access. We experimentally estimated the decrease ratio of the TBI index and evaluated the characteristics of the TBI equation. We found that the index follows Zipf's distribution, indicating that reflects the change in popularity. We also introduce an access-log analysis system called CyberRanking that includes TBI analysis. CyberRanking analyzes the access logs of Web servers and presents the results in 2-D or 3-D graph on a Web browser.},
 pages = {729--734},
 title = {An "Interest" Index for WWW Servers and CyberRanking},
 volume = {E83-D},
 year = {2000}
}