Istituto di Scienza e Tecnologie dell'Informazione     
Straccia U. On the Top-k retrieval problem for ontology-based access to databases. vol. 497 O. Pivert, S. Zadrozny (eds.). (Studies in Computational Intelligence, vol. 497). Switzerland: Springer Verlag, 2014.
The chapter is a succinct summary on the problem of evaluating ranked top-k queries in the context of ontology-based access over relational databases. An ontology layer is used to define the relevant abstract concepts and relations of the application domain, while facts with associated score are stored into a relational database. Queries are conjunctive queries with ranking aggregates and scoring functions. The results of a query may be ranked according to the score and the problem is to find efficiently the top-k ranked query answers.
URL: http://link.springer.com/chapter/10.1007%2F978-3-319-00954-4_5
DOI: 10.1007/978-3-319-00954-4_5
Subject Top-k retrieval
Ontology based access

Icona documento 1) Download Document PDF

Icona documento Open access Icona documento Restricted Icona documento Private


Per ulteriori informazioni, contattare: Librarian http://puma.isti.cnr.it

Valid HTML 4.0 Transitional