24. The electronic device of claim 19 , wherein the at least one processor is further configured to: monitor the usage information of the at least one data source in the electronic device, and update the at least one knowledge cluster based on the monitoring using an incremental model.
24. The electronic device of claim 19 , wherein the at least one processor is further configured to: monitor the usage information of the at least one data source in the electronic device, and update the at least one knowledge cluster based on the monitoring using an incremental model. 25. The electronic device of claim 24 , wherein the at least one processor is further configured to update the at least one knowledge cluster through at least one of adding a semantic content to the at least one knowledge cluster, splitting the at least one knowledge cluster, or merging the at least one knowledge cluster.