3. The method of claim 1 , wherein the determination of a frequency of association between each of the first entities and each of the second entities comprises: searching for at least one of the first entities and at least one of the second entities in the structured data and unstructured data; and determining an association between the at least one of the first entities and the at least one of the second entities based on a result of searching.
3. The method of claim 1 , wherein the determination of a frequency of association between each of the first entities and each of the second entities comprises: searching for at least one of the first entities and at least one of the second entities in the structured data and unstructured data; and determining an association between the at least one of the first entities and the at least one of the second entities based on a result of searching. 4. The method of claim 3 , wherein the unstructured data is filtered based on one or more pre-determined criteria before the searching.