NGS: a framework for multi-domain query answering

摘要: If we consider a query involving multiple domains, such as "find all database conferences held within six months in locations whose seasonal average temperature is 28degC and for which cheap travel solution exists", note that (i) general- purpose search engines fail to answer multi-domain queries (ii) specific services may cover one of but no general integration framework readily available. Currently, the only way treat cases separately dedicated feed result input another, or pairwise compare them by hand. This paper presents NGS, providing fully automated support cross-domain queries. In particular, NGS (a) integrates different kinds (search engines, web services, wrapped pages) into global ontology, i.e., unified view concepts supported available (b) covers formulation aspects over rewriting terms actual (c) offers several optimization opportunities leveraging characteristics at hand, based on cost metrics.