92 search results - page 3 / 19 » Conjunctive Query Evaluation by Search Tree Revisited |
BNCOD
2009
13 years 8 months ago
2009
We study the expressiveness of a positive fragment of path queries, denoted Path+ , on node-labeled trees documents. The expressiveness of Path+ is studied from two angles. First, ...
CIKM
1999
Springer
13 years 11 months ago
1999
Springer
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Recently, there has been extensive research that generated a wealth of new XML full-text query languages, ranging from simple Boolean search to combining sophisticated proximity a...
SEMWEB
2007
Springer
14 years 1 months ago
2007
Springer
Current information retrieval (IR) approaches do not formally capture the explicit meaning of a keyword query but provide a comfortable way for the user to specify information need...
PR
2010
13 years 2 months ago
2010
Many algorithms in image analysis require a priority queue, a data structure that holds pointers to pixels in the image, and which allows efficiently finding the pixel in the queu...