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CHARACTERISTIC POINT DETECTION SYSTEM, CHARACTERISTIC POINT DETECTION METHOD, AND PROGRAM

  • US 20130054602A1
  • Filed: 04/21/2011
  • Published: 02/28/2013
  • Est. Priority Date: 05/12/2010
  • Status: Active Grant
First Claim
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1. A characteristic point detection system, comprising:

  • a staying area detection unit which performs clustering based on distribution of data points contained in GPS log data of a user, determines an index showing a staying time of the user in a cluster based on the number of data points contained in each cluster, extracts one or more clusters based on the index, and forms a staying area of the user based on the extracted clusters, wherewith a cluster is extracted with higher probability as the staying time is longer;

    a representative point extraction unit which extracts, one at a time, a representative point of the staying area from each of the extracted staying areas, and determines a score of each of the representative points based on density of the data points in each of the staying areas; and

    a representative point ranking unit which outputs a list ranking each of the representative points based on the score.

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