651 search results - page 121 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
SSDBM
2003
IEEE
14 years 1 months ago
2003
IEEE
String data is ubiquitous, and its management has taken on particular importance in the past few years. Approximate queries are very important on string data especially for more c...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Accurate prediction of operator execution time is a prerequisite for database query optimization. Although extensively studied for conventional disk-based DBMSs, cost modeling in ...
SIGIR
2011
ACM
12 years 10 months ago
2011
ACM
Inverted indexes are the most fundamental and widely used data structures in information retrieval. For each unique word occurring in a document collection, the inverted index sto...
SIGIR
2011
ACM
12 years 10 months ago
2011
ACM
A key challenge in recommender system research is how to effectively profile new users, a problem generally known as cold-start recommendation. Recently the idea of progressivel...
JMLR
2010
13 years 2 months ago
2010
Continuous-time Bayesian networks is a natural structured representation language for multicomponent stochastic processes that evolve continuously over time. Despite the compact r...