2228 search results - page 130 / 446 » A System for Semantic Query Optimization |
JCSS
2000
14 years 9 months ago
2000
We investigate a class of path constraints that is of interest in connection with both semistructured and structured data. In standard database systems, constraints are typically ...
ECBS
2009
IEEE
15 years 4 months ago
2009
IEEE
Future space missions, such as Mars Science Laboratory, are built upon computing platforms providing a high degree of autonomy and diverse functionality. The increased sophisticat...
SIGMOD
2002
ACM
14 years 9 months ago
2002
ACM
Traditional query processors generate full, accurate query results, either in batch or in pipelined fashion. We argue that this strict model is too rigid for exploratory queries o...
ADBIS
2005
Springer
15 years 3 months ago
2005
Springer
Abstract. The performance of an information retrieval system is usually measured in terms of two different criteria, precision and recall. This way, the optimization of any of its...
CORR
2011
Springer
14 years 5 months ago
2011
Springer
Contemporary use of the term ’intension’ derives from the traditional logical doctrine that an idea has both an extension and an intension. In this paper we introduce an intens...