2-dimensional space, Euclidean metric: Difference between revisions

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== Parameters ==  
== Parameters ==  


No parameters found.
$n$: number of points
 
$k$: dimension of space


== Table of Algorithms ==  
== Table of Algorithms ==  
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| [[Khuller; Matias Randomized Sieve ( Closest Pair Problem)|Khuller; Matias Randomized Sieve]] || 1995 || $O(n)$ || $O(n)$, not sure if this is auxiliary || Exact || Randomized || [https://dl.acm.org/citation.cfm?id=207181 Time] & [https://www.sciencedirect.com/science/article/pii/S0890540185710498, Space]
| [[Khuller; Matias ( Closest Pair Problem)|Khuller; Matias]] || 1995 || $O(n)$ || $O(n)$, not sure if this is auxiliary || Exact || Randomized || [https://www.sciencedirect.com/science/article/pii/S0890540185710498 Time] & [https://www.sciencedirect.com/science/article/pii/S0890540185710498, Space]
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| [[Shamos; Hoey (2-dimensional space, Euclidean metric Closest Pair Problem)|Shamos; Hoey]] || 1975 || $O(n logn)$ || $O(n)$ || Exact || Deterministic || [https://ieeexplore.ieee.org/document/4567872 Time]
| [[Shamos; Hoey (2-dimensional space, Euclidean metric Closest Pair Problem)|Shamos; Hoey]] || 1975 || $O(n \log n)$ || $O(n)$ || Exact || Deterministic || [https://ieeexplore.ieee.org/document/4567872 Time]
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Revision as of 08:52, 10 April 2023

Description

Given $n$ points in 2-dimensional space equipped with the Eucildean metric, find a pair of points with the smallest distance between them.

Related Problems

Related: k-dimensional space, $l_m$ (or $l_\infty$) norm, 2-dimensional space, $l_m$ (or $l_\infty$) norm, 2-dimensional array representation

Parameters

$n$: number of points

$k$: dimension of space

Table of Algorithms

Name Year Time Space Approximation Factor Model Reference
Khuller; Matias 1995 $O(n)$ $O(n)$, not sure if this is auxiliary Exact Randomized Time & Space
Shamos; Hoey 1975 $O(n \log n)$ $O(n)$ Exact Deterministic Time

Time Complexity Graph

Closest Pair Problem - 2-dimensional space, Euclidean metric - Time.png

Space Complexity Graph

Closest Pair Problem - 2-dimensional space, Euclidean metric - Space.png

Time-Space Tradeoff

Closest Pair Problem - 2-dimensional space, Euclidean metric - Pareto Frontier.png