7. The non-transitory computer-readable storage medium of claim 1 , wherein determining the short-term category of interest comprises determining the short-term category of interest based on, at least, user specific information.
7. The non-transitory computer-readable storage medium of claim 1 , wherein determining the short-term category of interest comprises determining the short-term category of interest based on, at least, user specific information. 8. The non-transitory computer-readable storage medium of claim 7 , wherein the user specific information includes at least one of demographic information of the user and location information of the user.