Patent ID: 8095652

Claim:
An analysis system for analyzing an activity of an information source on a network, comprising: an attribute extraction block for extracting an information characteristic value from information transmitted through the network to generate an index list in which the information characteristic value is registered in association with an information identification value; an information propagation graph acquisition block for searching action history data in association with the information having an attribute extracted by a setting condition from an action type on the network associated with the information, a user ID uniquely identifying a user, and the action history data recorded in association with the information, and registering the information as a node on the network in response to generating or editing the information to generate a graph connected by a link indicating time-series generation of the node using the action type; and a characteristic user calculation block for calculating an amount of node characteristic as a measure to indicate, in the graph, the activity of the node on the network to integrate the amount of node characteristic based on the link in the graph in order to convert, into a numerical value, the activity as the information source of the user; wherein the link is a directed link that comprises a link attribute comprising of a link ID, a link source content ID, a link destination content ID, and a link source access timestamp for indicating when the access to the link source was performed; and wherein the node contains a node attribute comprising a content ID, a timestamp, a user ID of the user who generates content, and the number of times the node is being read.