TY - GEN

T1 - Flow algorithms for two pipelined filter ordering problems

AU - Condon, Anne

AU - Deshpande, Amol

AU - Hellerstein, Lisa

AU - Wu, Ning

PY - 2006

Y1 - 2006

N2 - Pipelined filter ordering is a central problem in database query optimization, and has received renewed attention recently in the context of environments such as the web, continuous high-speed data streams and sensor networks. We present algorithms for two natural extensions of the classical pipelined filter ordering problem: (1) a distributional type problem where the filters run in parallel and the goal is to maximize throughput, and (2) an adversarial type problem where the goal is to minimize the expected value of multiplicative regret. We show that both problems can be solved using similar flow algorithms, which find an optimal ordering scheme in time O(n2), where n is the number of filters. Our algorithm for (1) improves on an earlier O(n3 log n) algorithm of Kodialam.

AB - Pipelined filter ordering is a central problem in database query optimization, and has received renewed attention recently in the context of environments such as the web, continuous high-speed data streams and sensor networks. We present algorithms for two natural extensions of the classical pipelined filter ordering problem: (1) a distributional type problem where the filters run in parallel and the goal is to maximize throughput, and (2) an adversarial type problem where the goal is to minimize the expected value of multiplicative regret. We show that both problems can be solved using similar flow algorithms, which find an optimal ordering scheme in time O(n2), where n is the number of filters. Our algorithm for (1) improves on an earlier O(n3 log n) algorithm of Kodialam.

KW - Flow algorithms

KW - Pipelined filter ordering

KW - Query optimization

KW - Selection ordering

UR - http://www.scopus.com/inward/record.url?scp=34250677320&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34250677320&partnerID=8YFLogxK

U2 - 10.1145/1142351.1142379

DO - 10.1145/1142351.1142379

M3 - Conference contribution

AN - SCOPUS:34250677320

SN - 1595933182

SN - 9781595933188

T3 - Proceedings of the ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems

SP - 193

EP - 202

BT - Proceedings of the Twenty-Fifth ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS 2006

T2 - 25th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS 2006

Y2 - 26 June 2006 through 28 June 2006

ER -