13 citations · 22 across the 3 of their papers we have counts for
4 papers · 1 filter
Query Answering under Volume-Based Diversity Functions
Marcelo Arenas, Timo Camillo Merkl, Reinhard Pichler +1
When query evaluation produces too many tuples, a new approach in query answering is to retrieve a diverse subset of them. The standard approach for measuring the diversity of a se…
Towards Tractability of the Diversity of Query Answers: Ultrametrics to the Rescue
Marcelo Arenas, Timo Camillo Merkl, Reinhard Pichler +1
The set of answers to a query may be very large, potentially overwhelming users when presented with the entire set. In such cases, presenting only a small subset of the answers to…
On Directly Mapping Relational Databases to RDF and OWL (Extended Version)
Juan F. Sequeda, Marcelo Arenas, Daniel P. Miranker
Mapping relational databases to RDF is a fundamental problem for the development of the Semantic Web. We present a solution, inspired by draft methods defined by the W3C where rela…
Answer Sets for Consistent Query Answering in Inconsistent Databases
Marcelo Arenas, Leopoldo Bertossi, Jan Chomicki
A relational database is inconsistent if it does not satisfy a given set of integrity constraints. Nevertheless, it is likely that most of the data in it is consistent with the con…