24. The non-transitory computer readable medium of claim 19 , wherein an interest level of the user among the hierarchy of categories is inferred based on the first adjusted category score vector.
24. The non-transitory computer readable medium of claim 19 , wherein an interest level of the user among the hierarchy of categories is inferred based on the first adjusted category score vector. 27. The non-transitory computer readable medium of claim 24 , wherein the second network resource is separate from the plurality of network resources and has not been used by the user, and wherein the plurality of edges further represents the measure of cross-references between the second resource description data record and the plurality of resource description data collections.