Järvelin, K. & Niemi, T. 1 Integration of NF 2 and Transitive Computation INTEGRATION OF COMPLEX OBJECTS AND TRANSITIVE RELATIONSHIPS FOR INFORMATION RETRIEVAL Kalervo Järvelin + and Timo Niemi # # Dept. of Computer Science and + Dept. of Information Studies University of Tampere P.O.Box 607 FIN-33101 TAMPERE, Finland Corresponding author : Kalervo Järvelin Dept. of Information Studies University of Tampere P.O.Box 607 FIN-33101 TAMPERE, Finland phone : + 358-31-2156 953 email : kalervo.jarvelin@ uta.fi Running title : Integration of NF 2 and Transitive Computation ______________________ Reprints may be requested from Kalervo Järvelin, Dept. of Information Studies, University of Tampere, P.O.Box 607, FIN-33101 TAMPERE, Finland