Distance-Based Representative Skyline

12 years 1 months ago
Distance-Based Representative Skyline
Given an integer k, a representative skyline contains the k skyline points that best describe the tradeoffs among different dimensions offered by the full skyline. Although this topic has been previously studied, the existing solution may sometimes produce k points that appear in an arbitrarily tiny cluster, and therefore, fail to be representative. Motivated by this, we propose a new definition of representative skyline that minimizes the distance between a non-representative skyline point and its nearest representative. We also study algorithms for computing distance-based representative skylines. In 2D space, there is a dynamic programming algorithm that guarantees the optimal solution. For dimensionality at least 3, we prove that the problem is NP-hard, and give a 2-approximate polynomial time algorithm. Using a multidimensional access method, our algorithm can directly report the representative skyline, without retrieving the full skyline. We show that our representative skyline n...
Yufei Tao, Ling Ding, Xuemin Lin, Jian Pei
Added 20 Oct 2009
Updated 20 Oct 2009
Type Conference
Year 2009
Where ICDE
Authors Yufei Tao, Ling Ding, Xuemin Lin, Jian Pei
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