304 search results - page 16 / 61 » Selectivity Estimation of Window Queries |
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Recent data stream systems such as TelegraphCQ have employed the well-known property of duality between data and queries. In these systems, query processing methods are classified...
VLDB
1997
ACM
13 years 12 months ago
1997
ACM
The result size of a query that involves multiple attributes from the same relation depends on these attributes’ joint data distribution,i.e., the frequencies of all combination...
RSS
2007
2007
Simultaneous Localisation and Mapping in Dynamic Environments (SLAMIDE) with Reversible Data Associa
13 years 9 months ago
Abstract— The conventional technique for dealing with dynamic objects in SLAM is to detect them and then either treat them as outliers [20][1] or track them separately using trad...
SIGIR
2009
ACM
14 years 2 months ago
2009
ACM
The need for evaluating large amounts of topics (queries) makes IR evaluation an uneasy task. In this paper, we study a topic selection problem for IR evaluation. The selection cr...
EDBT
2006
ACM
14 years 7 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...