US Patent 9147000 Method and system for recommending websites

Method, apparatus, and programs for recommending websites. Information related to a user's browsing history of a plurality of websites is obtained. A browsing co-occurrence of at least some of the plurality of websites in one or more time periods is determined based on the obtained information related to the user's browsing history. The plurality of websites are assigned to a plurality of website groups based on the determined browsing co-occurrence. Each of the plurality of website groups is associated with one of the one or more time periods. At least one of the plurality of website groups is presented to the user based on their associated time periods.