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LATIN
2010
Springer

Layered Working-Set Trees

9 years 8 months ago
Layered Working-Set Trees
The working-set bound [Sleator and Tarjan, J. ACM, 1985] roughly states that searching for an element is fast if the element was accessed recently. Binary search trees, such as splay trees, can achieve this property in the amortized sense, while data structures that are not binary search trees are known to have this property in the worst case. We close this gap and present a binary search tree called a layered working-set tree that guarantees the working-set property in the worst case. The unified bound [B˘adoiu et al., TCS, 2007] roughly states that searching for an element is fast if it is near (in terms of rank distance) to a recently accessed element. We show how layered working-set trees can be used to achieve the unified bound to within a small additive term in the amortized sense while maintaining in the worst case an access time that is both logarithmic and within a small multiplicative factor of the working-set bound.
Prosenjit Bose, Karim Douïeb, Vida Dujmovic,
Added 18 May 2010
Updated 18 May 2010
Type Conference
Year 2010
Where LATIN
Authors Prosenjit Bose, Karim Douïeb, Vida Dujmovic, John Howat
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