8. The system of claim 7 , wherein each node represents one of the plurality of information assets, and wherein the semantic graph further includes a plurality of weighted edges, each connecting two nodes among the plurality of nodes and indicating a relationship strength between two respective information assets represented by the two nodes.
7. A system of governing information assets managed by an enterprise, the system comprising: a computer processor; and a memory storing an enterprise information asset management application which, when executed on the computer processor, performs an operation comprising: identifying, by an enterprise information asset management application executed on a computing system having at least a processor and a memory, a set of search results responsive to a query requesting a subset of information assets within the enterprise; providing the set of search results; receiving a selection of a first information asset presented in the set of search results; identifying at least a second information asset presented in the set of search results, wherein the first information asset and the second information asset are related to one another by an edge in a semantic graph that represents relationships between the plurality of information assets, wherein the semantic graph associates the plurality of information assets with nodes of the semantic graph, wherein the relationships between nodes in the semantic graph are generated and updated by monitoring user behavior in accessing the plurality of information assets with the set of search results and without requiring user input explicitly specifying to update the relationships, wherein the semantic graph is updated based on a domain ontology; parsing the semantic graph in order to identify at least one information asset selected from: (i) an informal information asset whose relationships satisfy an overuse criterion and (ii) an underused information asset whose relationships satisfy an underuse criterion; and designating the at least one information asset as being overused or underused, whereafter the at least one information asset is formally commissioned or decommissioned.