10. A system comprising: a memory; one or more processors coupled to the memory to perform acts comprising: providing a spatial map containing geographical regions partitioned with points of interests based at least in part on representative categories; identifying a user-specified region with two or more points of interests in each of one or more representative categories in the spatial map; searching for a set of geographical region candidates with another two or more points of interests in each of the one or more representative categories based at least in part on a spatial similarity to comparable points of interest in a representative category in the user-specified region, the spatial similarity comprises comparable distribution of the two or more points of interests in the representative categories; and presenting top geographical region candidates based on a result of the searching.
10. A system comprising: a memory; one or more processors coupled to the memory to perform acts comprising: providing a spatial map containing geographical regions partitioned with points of interests based at least in part on representative categories; identifying a user-specified region with two or more points of interests in each of one or more representative categories in the spatial map; searching for a set of geographical region candidates with another two or more points of interests in each of the one or more representative categories based at least in part on a spatial similarity to comparable points of interest in a representative category in the user-specified region, the spatial similarity comprises comparable distribution of the two or more points of interests in the representative categories; and presenting top geographical region candidates based on a result of the searching. 13. The system of claim 10 , wherein searching for a set of geographical region candidates with points of interests in representative categories further comprises determining a content similarity comprising points of interests and representative categories.