| 摘要 |
A use history that at least associates a use subject identifier for identifying a user or a terminal device a user has used with a used item identifier, which is an item identifier for identifying an item used by a user, based on use information is stored in a use history storage section. Based on the use history, a degree of similarity between two item identifiers is calculated and using the degree of similarity, associated data causing a base item identifier, which is an item identifier of a base item, and an associated item identifier, which is an item identifier of an associated item similar to the base item to correspond to each other is created. A change value to change a point value managed for each use subject identifier is calculated. |
| 主权项 |
1: An information processing method performed by an information processing server which includes a central processing unit and memory, the method comprising:
a usage history storage step of using the central processing unit to store in said memory usage histories that associate a use subject identifier for identifying a first user or a terminal device the first user has used, with a used item identifier, which is an item identifier for identifying an item used by a particular user; an associated data creation step of calculating, using the central processing unit, a degree of similarity between two item identifiers based on the usage histories and creating associated data that causes a base item identifier and an associated item identifier to correspond to each other using the calculated degree of similarity, wherein when an associated item is used based on the associated data, a usage history causing the use subject identifier, the used item identifier, and specific information to correspond to one another is stored, and wherein the specific information is information capable of specifying a base item identifier corresponding to the associated item identifier of the used item; and a point distribution calculation step of calculating, using the central processing unit, a change value to change a point value managed for each of the use subject identifiers, the point distribution calculation step includes: a previous usage history set formation step of retrieving from memory and selecting one usage history having the specific information from the usage history storage section, and forming a first previous usage history set which is a set of other usage histories being older than the one usage history and satisfying a first condition; and wherein the first condition is any one of a condition where:
(1) a used item identifier in the other usage histories agrees with the base item identifier specified by the specific information in the one usage history,(2) a used item identifier in the other usage histories agrees with the used item identifier in the one usage history, and(3) a used item identifier in the other usage histories agrees with any of the base item identifiers specified by the specific information in the one usage history and the used item identifier in the one usage history; and a change value calculation step of calculating, using the central processing unit, a change value to change the point value for a user set whose elements correspond to a plurality of use subject identifiers which is at least a part of a set of use subject identifiers included in the first previous usage history set. |
