Sciweavers

2210 search results - page 404 / 442
» CLEF 2001 - Overview of Results
Sort
View
VLDB
2001
ACM
114views Database» more  VLDB 2001»
14 years 1 months ago
Distinct Sampling for Highly-Accurate Answers to Distinct Values Queries and Event Reports
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...
Phillip B. Gibbons
VLDB
2001
ACM
190views Database» more  VLDB 2001»
14 years 1 months ago
LEO - DB2's LEarning Optimizer
Most modern DBMS optimizers rely upon a cost model to choose the best query execution plan (QEP) for any given query. Cost estimates are heavily dependent upon the optimizer’s e...
Michael Stillger, Guy M. Lohman, Volker Markl, Mok...
WADS
2001
Springer
126views Algorithms» more  WADS 2001»
14 years 1 months ago
On External-Memory Planar Depth First Search
Even though a large number of I/O-efficient graph algorithms have been developed, a number of fundamental problems still remain open. For example, no space- and I/O-efficient algo...
Lars Arge, Ulrich Meyer, Laura Toma, Norbert Zeh
WADS
2001
Springer
182views Algorithms» more  WADS 2001»
14 years 1 months ago
On the Complexity of Scheduling Conditional Real-Time Code
Abstract. Many real-time embedded systems involve a collection of independently executing event-driven code blocks, having hard real-time constraints. Portions of such codes when t...
Samarjit Chakraborty, Thomas Erlebach, Lothar Thie...
ARITH
2001
IEEE
14 years 13 days ago
Computer Arithmetic-A Processor Architect's Perspective
The Instruction Set Architecture (ISA) of a programmable processor is the native languageof the machine. It defines the set of operations and resourcesthat are optimized for that ...
Ruby B. Lee