1. A method of assigning a direction of impact to an association between assets based on an impact of an event mapped to at least one of the assets, 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 the direction of impact of the event on an association in various scopes between assets, based on an impact of the event on at least one of the assets of the association.