2145 search results - page 305 / 429 » Pattern-Based Query Answering |
CIKM
2011
Springer
12 years 9 months ago
2011
Springer
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
ICIP
1998
IEEE
14 years 10 months ago
1998
IEEE
We describe a new invariant-based data model for image databases under our approach for shape-based retrieval. The data model relies on contours description of the image shape, an...
PODS
2004
ACM
14 years 9 months ago
2004
ACM
Geometric coordinates are an integral part of many data streams. Examples include sensor locations in environmental monitoring, vehicle locations in traffic monitoring or battlefi...
PODS
2008
ACM
14 years 9 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
PODS
2008
ACM
14 years 9 months ago
2008
ACM
We revisit the classical chase procedure, studying its properties as well as its applicability to standard database problems. We settle (in the negative) the open problem of decid...