FuzzyCMeans: Perform Fuzzy C-means clustering on a data matrix. A soft...

In neurodata/knorR: A Parallel Clustering Non-Uniform Memory Access ('NUMA') Optimized Library

Description

See: https://en.wikipedia.org/wiki/Fuzzy_clustering#Fuzzy_C-means_clustering

Usage

FuzzyCMeans(data, centers, nrow = -1, ncol = -1,
  iter.max = .Machine$integer.max, nthread = -1, fuzz.index = 2,
  init = c("forgy", "none"), tolerance = 1e-06,
  dist.type = c("sqeucl", "eucl", "cos", "taxi"))

Arguments

data	Data file name on disk (NUMA optimized) or In memory data matrix
centers	Either (i) The number of centers (i.e., k), or (ii) an In-memory data matrix
nrow	The number of samples in the dataset
ncol	The number of features in the dataset
iter.max	The maximum number of iteration of k-means to perform
nthread	The number of parallel threads to run
fuzz.index	The fuzziness coefficient/index (> 1 and < inf)
init	The type of initialization to use c("forgy", "none")
tolerance	The convergence tolerance
dist.type	What dissimilarity metric to use

Value

A list containing the attributes of the output of kmeans. cluster: A vector of integers (from 1:k) indicating the cluster to which each point is allocated. centers: A matrix of cluster centres. size: The number of points in each cluster. iter: The number of (outer) iterations. contrib.mat: The data point to cluster contribution matrix

Author(s)

Disa Mhembere <[e-mail]>

Examples

iris.mat <- as.matrix(iris[,1:4])
k <- length(unique(iris[, dim(iris)[2]])) # Number of unique classes
fcm <- FuzzyCMeans(iris.mat, k, iter.max=5)

neurodata/knorR documentation built on May 25, 2019, 10:35 p.m.