5169 search results - page 956 / 1034 » Locality approximation using time |
137
click to vote
ICDT
2005
ACM
15 years 8 months ago
2005
ACM
Abstract. A classical problem in query optimization is to find the optimal ordering of a set of possibly correlated selections. We provide an ion of this problem as a generalizati...
120
click to vote
CEC
2003
IEEE
15 years 8 months ago
2003
IEEE
A population of virtual robots is evolved to perform the task of competitively painting the floor of a toroidal room. Two robots are present in any given room and paint using dis...
120
click to vote
VLDB
2001
ACM
15 years 7 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
181
click to vote
FOCS
2000
IEEE
15 years 7 months ago
2000
IEEE
In this article, we show several results obtained by combining the use of stable distributions with pseudorandom generators for bounded space. In particular: —We show that, for a...
130
click to vote
HPDC
2000
IEEE
15 years 7 months ago
2000
IEEE
In this paper, we present a performance evaluation of a wide-area cluster system based on a rewallenabled Globus metacomputing toolkit. In order to establish communication links ...