CROSS TAB EDITOR WITH REVERSE EDITING CAPABILITY

Methods, apparatus and computer readable media are provided for reverse editing a knowledge base from a cross tab display. A cross tab editor includes a knowledge base resident in a memory device, the knowledge base comprising attribute values and a knowledge base management system, wherein the knowledge base management system is configured to create a first list of sub-entities for a first entity, create a second list of sub-entities for a second entity, and create a relationship table listing all of the combinations of each pair of sub-entities from the first list and the second list and their attribute values. The knowledgebase management system is further configured to populate the relationship table with an attribute value for each combination. The knowledge base management system is further configured to receive a manual change in a cross tab display and to update the underlying attribute data in response to the change.