dridgeline

Computes the density of a two-component Gaussian mixture along the 
 ridgeline (Ray and Lindsay, 2005), along which 
 all its density extrema are located.

multivariate

cluster

Various methods for clustering and cluster validation.
Fixed point clustering. Linear regression clustering. Clustering by
merging Gaussian mixture components. Symmetric
and asymmetric discriminant projections for visualisation of the
separation of groupings. Cluster validation statistics
for distance based clustering including corrected Rand index.
Standardisation of cluster validation statistics by random clusterings and
comparison between many clustering methods and numbers of clusters based on
this.
Cluster-wise cluster stability assessment. Methods for estimation of
the number of clusters: Calinski-Harabasz, Tibshirani and Walther's
prediction strength, Fang and Wang's bootstrap stability.
Gaussian/multinomial mixture fitting for mixed
continuous/categorical variables. Variable-wise statistics for cluster
interpretation. DBSCAN clustering. Interface functions for many
clustering methods implemented in R, including estimating the number of
clusters with kmeans, pam and clara. Modality diagnosis for Gaussian
mixtures. For an overview see package?fpc.

Christian Hennig

Flexible Procedures for Clustering

dridgeline function

<dl> <dt>alpha</dt>
<dd>sequence of values between 0 and 1 for which the density
is computed.</dd> <dt>prop</dt>
<dd>mixture proportion of first component.</dd> <dt>mu1</dt>
<dd>mean vector of component 1.</dd> <dt>mu2</dt>
<dd>mean vector of component 2.</dd> <dt>Sigma1</dt>
<dd>covariance matrix of component 1.</dd> <dt>Sigma2</dt>
<dd>covariance matrix of component 2.</dd> <dt>showplot</dt>
<dd>logical. If <code>TRUE</code>, the density is plotted
against <code>alpha</code>.</dd> <dt>...</dt>
<dd>further arguments to be passed on to plot.</dd></dl>

Arguments

Christian Hennig
 <a href="/link/christian.hennig%40unibo.it?package=fpc&version=2.2-13" data-mini-rdoc="fpc::christian.hennig@unibo.it">christian.hennig@unibo.it</a>
 <a href="https://www.unibo.it/sitoweb/christian.hennig/en/">https://www.unibo.it/sitoweb/christian.hennig/en/</a>

Author

Density along the ridgeline — dridgeline

<dl>

 <dt>alpha</dt>
<dd>sequence of values between 0 and 1 for which the density
is computed.</dd>

 <dt>prop</dt>
<dd>mixture proportion of first component.</dd>

 <dt>mu1</dt>
<dd>mean vector of component 1.</dd>

 <dt>mu2</dt>
<dd>mean vector of component 2.</dd>

 <dt>Sigma1</dt>
<dd>covariance matrix of component 1.</dd>

 <dt>Sigma2</dt>
<dd>covariance matrix of component 2.</dd>

 <dt>showplot</dt>
<dd>logical. If <code>TRUE</code>, the density is plotted
against <code>alpha</code>.</dd>

 <dt>...</dt>
<dd>further arguments to be passed on to plot.</dd>

</dl>

Christian Hennig
 <a href='mailto:christian.hennig@unibo.it'>christian.hennig@unibo.it</a>
 <a href='https://www.unibo.it/sitoweb/christian.hennig/en/'>https://www.unibo.it/sitoweb/christian.hennig/en/</a>

dridgeline: Density along the ridgeline

Description

Usage

Value

Arguments

Author

References

Examples