2987 search results - page 409 / 598 » Multiobjective Query Optimization |
214
Voted
ICDE
2005
IEEE
16 years 3 months ago
2005
IEEE
Given a region qR and a future timestamp qT, a "range aggregate" query estimates the number of objects expected to appear in qR at time qT. Currently the only methods fo...
214
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ICDE
2000
IEEE
16 years 3 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...
205
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SIGMOD
2009
ACM
16 years 2 months ago
2009
ACM
With the proliferation of the RDF data format, engines for RDF query processing are faced with very large graphs that contain hundreds of millions of RDF triples. This paper addre...
204
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SIGMOD
2005
ACM
16 years 2 months ago
2005
ACM
Clio, the IBM Research system for expressing declarative schema mappings, has progressed in the past few years from a research prototype into a technology that is behind some of I...
WALCOM
2010
IEEE
15 years 8 months ago
2010
IEEE
We address a version of the set-cover problem where we do not know the sets initially (and hence referred to as covert) but we can query an element to find out which sets contain ...