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» Space Efficient Algorithms for Ordered Tree Comparison
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VLDB
2004
ACM
119views Database» more  VLDB 2004»
15 years 12 months ago
Evaluating holistic aggregators efficiently for very large datasets
Indatawarehousingapplications,numerousOLAP queries involve the processing of holistic aggregators such as computing the "top n," median, quantiles, etc. In this paper, we...
Lixin Fu, Sanguthevar Rajasekaran
WADS
1989
Springer
84views Algorithms» more  WADS 1989»
15 years 3 months ago
Skip Lists: A Probabilistic Alternative to Balanced Trees
rees can be used for representing abstract data types such as dictionaries and ordered lists. They work well when the elements are inserted in a random order. Some sequences of ope...
William Pugh
FOCS
2009
IEEE
15 years 3 months ago
Space-Efficient Framework for Top-k String Retrieval Problems
Given a set D = {d1, d2, ..., dD} of D strings of total length n, our task is to report the "most relevant" strings for a given query pattern P. This involves somewhat mo...
Wing-Kai Hon, Rahul Shah, Jeffrey Scott Vitter
97
Voted
ICALP
2001
Springer
15 years 4 months ago
Quantum Complexities of Ordered Searching, Sorting, and Element Distinctness
We consider the quantum complexities of the following three problems: searching an ordered list, sorting an un-ordered list, and deciding whether the numbers in a list are all dis...
Peter Høyer, Jan Neerbek, Yaoyun Shi
100
Voted
CEC
2008
IEEE
15 years 1 months ago
Directed trees: A powerful representation for sorting and ordering problems
We present a simple framework for dealing with search spaces consisting of permutations. To demonstrate its usefulness, we build upon it a simple (1 + 1)-evolutionary algorithm fo...
Benjamin Doerr, Edda Happ