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pmclust (version 0.1-1)

Parallel Model-Based Clustering

Description

The pmclust aims to utilize model-based clustering (unsupervised) for high dimensional and ultra large data, especially in a distributed manner. The package employs Rmpi to perform a parallel version of expectation and maximization (EM) algorithm for finite mixture Gaussian models. The unstructured dispersion matrices are assumed in the Gaussian models. The implementation is default in the single program multiple data (SPMD) programming model. The code can be executed through Rmpi and independent to most MPI applications. See the High Performance Statistical Computing (HPSC) website for more information, documents and examples.

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Version

Install

install.packages('pmclust')

Monthly Downloads

97

Version

0.1-1

License

GPL (>= 2)

Maintainer

Wei-Chen Chen

Last Published

February 8th, 2012

Functions in pmclust (0.1-1)

catmpi

cat function
.3.CONTROL

A set of controls in model-based clustering.
generate.basic.worker

Generate basic examples for testing
printmpi

print function
e.step.worker

Compute one E-step and log likelihood at current parameters
apecm1.step.worker

APECM1 steps for workers
em.step.worker

EM steps for workers
initial.em.worker

Initialization for model-based clustering
kmeans.update.class.worker

Update CLASS.worker based on the K-means final iteration
get.N.CLASS

Obtain total elements for every clusters
indep.logL

Independent function for log likelihood
em.update.class.worker

Update CLASS.worker based on the final iteration
apecm2.step.worker

APECM2 steps for workers
mb.print

Print results of model-based clustering
.2.PARAM

A set of parameters in model-based clustering.
initial.center.worker

Initialization for K-means algorithm
kmeans.step.worker

K-means steps for workers
initial.RndEM.worker

Initialization of RndEM for X.worker
.1.set.global

Set global variables according to X.worker
assign.N.sample

Obtain a set of random samples for X.worker
aecm.step.worker

AECM steps for workers
.0.readme

Read me first function
m.step.worker

Compute one M-step at current posterior probabilities
em.onestep.worker

One EM step for workers
pmclust-package

Parallel Model-Based Clustering