394 search results - page 23 / 79 » Conditional Preferences: A New Semantics for Database Querie... |
CORR
2011
Springer
13 years 2 months ago
2011
Springer
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
IDEAS
2006
IEEE
14 years 1 months ago
2006
IEEE
Unlike numerical preferences, preferences on attribute values do not show an inherent total order, but skyline computation has to rely on partial orderings explicitly stated by th...
EDBT
2012
ACM
11 years 10 months ago
2012
ACM
Most recommendation methods (e.g., collaborative filtering) consist of (1) a computationally intense offline phase that computes a recommender model based on users’ opinions o...
DEXAW
1998
IEEE
13 years 11 months ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
IADIS
2003
13 years 9 months ago
2003
The European MIAMM-project (Multidimensional Information Access using Multiple Modalities) develops new concepts and techniques for multimodal dialogs that allow for fast and natu...