Parallel between situation and interaction retrieval

Results have been obtained in elaborating a unified logical foundation for the classical Boolean and coordination level matching models, and in showing that the vector space and probabilistic models have a unified mathematical foundation. We show that it is possible to draw a formal parallel between two non-classical models, which have been thought to be independent of one another (situation and interaction), and, as a consequence, coordination level matching may be conceived as a special case of the interaction model, too