In a digital library, there are many di erent interaction models between customers and information providers or merchants. Subscriptions, sessions, pay-per-view, shareware, and pr...
Steven P. Ketchpel, Hector Garcia-Molina, Andreas ...
According to the logical model of Information Retrieval (IR), the task of IR can be described as the extraction, from a given document base, of those documents d that, given a que...
Carlo Meghini, Fabrizio Sebastiani, Umberto Stracc...
Visual interfaces to computer systems are interactive. The cycle of visual interaction involves both visual perception and action. This paper examines formal models of interactive...
The design and implementation of a conceptual model, CAFE (a Categorization Assistant For E-mail), is described. The model supports the organization, searching, and retrieval of i...
This paper develops a model of an electrical power system, with its inherent embedded communication system, for the purpose of studying the characteristics of power system measure...