198 search results - page 37 / 40 » Practical Algorithms for Tracking Database Join Sizes |
VLDB
2004
ACM
14 years 24 days ago
2004
ACM
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...
BTW
2007
Springer
14 years 1 months ago
2007
Springer
: Skyline queries have recently received a lot of attention due to their intuitive query formulation: users can state preferences with respect to several attributes. Unlike numeric...
ICDE
2007
IEEE
14 years 8 months ago
2007
IEEE
This paper addresses the problem of efficient maintenance of a materialized skyline view in response to skyline removals. While there has been significant progress on skyline quer...
KDD
2007
ACM
14 years 7 months ago
2007
ACM
We present DL8, an exact algorithm for finding a decision tree that optimizes a ranking function under size, depth, accuracy and leaf constraints. Because the discovery of optimal...
KDD
2010
ACM
13 years 5 months ago
2010
ACM
Identifying hot spots of moving vehicles in an urban area is essential to many smart city applications. The practical research on hot spots in smart city presents many unique feat...