Data conversion, aggregation and deduction for advanced retrieval from the heterogeneous fact databases

Kalervo J?rvelin, Timo Niemi
1991 Proceedings of the 14th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '91  
Modern distributed fact databases are heterogeneous and autonomous.
doi:10.1145/122860.122877 dblp:conf/sigir/JarvelinN91 fatcat:qpyi7ulmjfhgfbi4v5jzkvgnuu