lle: find_nn_k – R documentation

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find_nn_k

Find k nearest neighbours.

Finds the nearest k points for every point of the input data.

find_nn_k(X, k, iLLE = FALSE)

`X`	matrix object containing the input data.
`k`	number of neighbours.
`iLLE`	a logical values indicating wheater to use improved LLE. See `lle`.

neighbours

matrix with N rows and columns. If x_j is a neighbour of x_i then neighbours[i,j] is one, else zero.

data( lle_scurve_data )
	X <- lle_scurve_data
	neighbours <- find_nn_k( X, 5 )
	table( rowSums( neighbours ) )

Locally linear embedding

v1.1

GPL-3

Authors

Holger Diedrich, Dr. Markus Abel (Department of Physics, University Potsdam)

Initial release

2012-03-21