Query folding is a technique for determining how a query may be answered using a given set of resources, which may include materialized views, cached results of previous queries, ...
We pursue a representation of logic programs as classical first-order sentences. Different semantics for logic programs can then be expressed by the way in which they are wrapped...
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
The viewable sphere corresponds to the space that surrounds us. The evolution of photography and panoramic software and hardware has made it possible for anybody to capture the vi...
This paper highlights some of the issues that have been reported in surveys carried out by the RIOJA (Repository Interface for Overlaid JournalArchives) project (http://www.ucl.ac...