28. The computer-readable medium of claim 27 , the method further comprising, when it is determined that the first relationship model contains no topic node different from the second relationship model, increasing the weightings of links between the resource node and the topic nodes in at least one of the first and second relationship models.
27. The computer-readable storage medium of claim 25 , wherein the first and second relationship models further include respective weightings assigned to the first and second links, the weightings respectively indicating values of the first and second topic nodes connected by the first and second links in leading the users of the first and second terminals to access the media resource.