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destiny (version 2.0.4)

find_dm_k: Find a suitable k

Description

The k parameter for the k nearest neighbors used in DiffusionMap should be as big as possible while still being computationally feasible. This function approximates it depending on the size of the dataset n.

Usage

find_dm_k(n, min_k = 100L, small = 1000L, big = 10000L)

Arguments

n
Number of possible neighbors (nrow(dataset) - 1)
min_k
Minimum number of neighbors. Will be chosen for \(n \ge big\)
small
Number of neighbors considered small. If/where \(n \le small\), n itself will be returned.
big
Number of neighbors considered big. If/where \(n \ge big\), min_k will be returned.

Value

A vector of the same length as n that contains suitable k values for the respective n

Examples

Run this code
curve(find_dm_k(n),     0, 13000, xname = 'n')
curve(find_dm_k(n) / n, 0, 13000, xname = 'n')

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