9. The method according to claim 8 further comprising using the pseudo-inverse of the Laplacian matrix to build graph-metrics measuring the connectedness or closeness between the entities in the knowledge base.
9. The method according to claim 8 further comprising using the pseudo-inverse of the Laplacian matrix to build graph-metrics measuring the connectedness or closeness between the entities in the knowledge base. 10. The method according to claim 9 wherein building a tensor operator measuring the connectedness or closeness of entities in the scenario into the hypothetical event includes using a metric obtained from the pseudo inverse of the Laplacian.