109 search results - page 5 / 22 » New Rewritings and Optimizations for Regular Path Queries |
ICML
2007
IEEE
14 years 7 months ago
2007
IEEE
Given a sample covariance matrix, we examine the problem of maximizing the variance explained by a particular linear combination of the input variables while constraining the numb...
VLDB
2004
ACM
13 years 12 months ago
2004
ACM
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
DATESO
2010
13 years 4 months ago
2010
The XML format has become the standard for data exchange because it is self-describing and it stores not only information but also the relationships between data. Therefore it is u...
SEBD
2008
13 years 8 months ago
2008
d Abstract) Daniele Braga1 , Diego Calvanese2 , Alessandro Campi1 , Stefano Ceri1 , Florian Daniel1 , Davide Martinenghi1 , Paolo Merialdo3 , Riccardo Torlone3 1 Dip. di Elettronic...
ESA
2004
Springer
13 years 12 months ago
2004
Springer
We introduce a problem directly inspired by its application to DWDM (dense wavelength division multiplexing) network design. We are given a set of demands to be carried over a netw...