8. The computer system of claim 2 , wherein the graphical view includes a directed graph of the keywords of each associated search result summary and a set of categories.
2. A computer system, comprising: one or more processors, one or more computer-readable memories and one or more computer-readable, tangible storage devices; and program instructions, stored on at least one of the one or more computer-readable, tangible storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, to perform: receiving selection of two or more search results, wherein each of the two or more search results has an associated search result summary; extracting keywords from the selected two or more search results and each associated search result summary; based on association rules and clustering mining models, identifying relationships between the keywords; based on relationship rules, identifying strengths of the relationships between the keywords; and displaying a graphical view that shows the keywords, the relationships, and the strengths of those relationships.