76 search results - page 12 / 16 » Boolean ranking: querying a database by k-constrained opti... |
ADC
2006
Springer
15 years 3 months ago
2006
Springer
Many strategies for similarity search in image databases assume a metric and quadratic form-based similarity model where an optimal lower bounding distance function exists for fil...
VLDB
2004
ACM
15 years 2 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...
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SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
In the rank join problem we are given a relational join R1 1 R2 and a function that assigns numeric scores to the join tuples, and the goal is to return the tuples with the highes...
EDBT
2006
ACM
15 years 9 months ago
2006
ACM
Given a set of N multi-dimensional points, we study the computation of -quantiles according to a ranking function F, which is provided by the user at runtime. Specifically, F compu...
VLDB
1992
ACM
15 years 1 months ago
1992
ACM
This paper considers the problem of adding list as a type constructor to an object-oriented data model. In particular, we are concerned with how lists in a database can be constru...