Embodiments of the present disclosure set forth a method for retrieving information from a semantic database having a plurality of semantic data. The method includes selecting a hub that is resolved with a number of semantic data based on a resolution rule, when the number of the semantic data is greater than a threshold in an offline environment; calculating a semantic data set that is associated with the hub based on a searching approach and the resolution rule in the offline environment; indexing the semantic data set in the offline environment; modifying the semantic database to include the semantic data set in the offline environment; and retrieving information from the semantic data set in an online environment.