| 摘要 |
<P>PROBLEM TO BE SOLVED: To evaluate whether or not a content, information and merchandise or the like continuously responds to the variety of the taste or interest of a user. <P>SOLUTION: A cluster formation mechanism operating situation evaluation device tabulates the usage situations of each content of each user from whole users or the subset of the users, tabulates a normalized similar matrix G with an inner product normalized from the frequency vector of each user as an element from the tabulated data, calculates the unique value of the matrix G and a unique vector corresponding to the unique value, calculates an angle made by the unique vector corresponding to the unique value and a non-negative vector overall space with respect to each unique value of the matrix G, illustrates the cumulative distribution of the unique values of the matrix G, applies an exponential distribution model to the distribution of the unique values truly exceeding 1 of the matrix G, calculates index of an exponential function and an application error, and calculates the cumulative auxiliary distribution of angles made by the unique vector corresponding to the unique values truly exceeding 1 of the matrix G and the non-negative vector overall space. <P>COPYRIGHT: (C)2013,JPO&INPIT |
