1. A method of assigning a weight to an association between an event and an asset, the method comprising the steps of: the computer creating a first topic map meta-model that identifies assets and events in a topic map based index with instance ontology based on a topic map meta model that identifies assets and a topic map meta-model that identifies events; the computer assigning an identification in the first topic map meta-model to at least one association between at least one asset of the topic map meta-model that identifies assets and at least one event of the topic map meta-model that identifies events; and the computer creating a second topic map meta-model that identifies at least one association between at least one asset and at least one event in a topic map based index and instance ontology with weights assigned to the at least one association in various scopes.