297 search results - page 42 / 60 » Polynomial heuristics for query optimization |
KDD
2005
ACM
14 years 8 months ago
2005
ACM
Frequent-pattern mining has been studied extensively on scalable methods for mining various kinds of patterns including itemsets, sequences, and graphs. However, the bottleneck of...
AAAI
2010
13 years 9 months ago
2010
The problem of dividing a sequence of values into segments occurs in database systems, information retrieval, and knowledge management. The challenge is to select a finite number ...
TCS
2008
13 years 7 months ago
2008
The Minimum-Energy Broadcast problem is to assign a transmission range to every station of an ad-hoc wireless networks so that (i) a given source station is allowed to perform bro...
JCO
2010
13 years 6 months ago
2010
Given a directed graph G = (N, A) with arc capacities uij and a minimum cost flow problem defined on G, the capacity inverse minimum cost flow problem is to find a new capacit...
SIGIR
2009
ACM
14 years 2 months ago
2009
ACM
Although many variants of language models have been proposed for information retrieval, there are two related retrieval heuristics remaining “external” to the language modelin...