651 search results - page 4 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
EDBT
2002
ACM
14 years 7 months ago
2002
ACM
Applying meta search systems is a suitable method to support the user if there are many different services. Due to information splitting strategies of literature services existing ...
ICTIR
2009
Springer
13 years 5 months ago
2009
Springer
Abstract. A useful ability for search engines is to be able to rank objects with novelty and diversity: the top k documents retrieved should cover possible interpretations of a que...
DMSN
2005
ACM
13 years 9 months ago
2005
ACM
In this paper we present the Threshold Join Algorithm (TJA), which is an efficient TOP-k query processing algorithm for distributed sensor networks. The objective of a top-k query...
DLOG
2010
13 years 5 months ago
2010
We develop a query algebra that supports efficient assertion retrieval--a natural extension of instance retrieval. The algebra is based on previously developed techniques for index...
VLDB
2004
ACM
14 years 8 months ago
2004
ACM
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....