sokalSneath3

sokalSneath3,Partition,Partition-method

sokalSneath3,PairCoefficients,missing-method

The partition $P$ or an instance of <a href="/link/?package=partitionComparison&version=0.2.5" paircoefficients'="" data-mini-rdoc="partitionComparison::"></a>'>PairCoefficients

Compute the index 3 of Sokal and Sneath
$$\frac{N_{11}N_{00}}{\sqrt{N_{21}N_{12}N'_{01}N'_{10}}}$$

Provides several measures ((dis)similarity, distance/metric,
correlation, entropy) for comparing two partitions of the same set of
objects. The different measures can be assigned to three different
classes: Pair comparison (containing the famous Jaccard and Rand
indices), set based, and information theory based.
Many of the implemented measures can be found in
Albatineh AN, Niewiadomska-Bugaj M and Mihalko D (2006)
<doi:10.1007/s00357-006-0017-z> and
Meila M (2007) <doi:10.1016/j.jmva.2006.11.013>.
Partitions are represented by vectors of class labels which allow a
straightforward integration with existing clustering algorithms
(e.g. kmeans()). The package is mostly based on the S4 object system.

Fabian Ball

partitionComparison

Implements Measures for the Comparison of Two Partitions

Andreas Geyer-Schulz

sokalSneath3 function

<dl><dt>p</dt>
<dd>The partition $P$ or an instance of PairCoefficients</dd>
<dt>q</dt>
<dd>The partition $Q$ or NULL</dd></dl>

Arguments

<ul>
<li><code>p = Partition,q = Partition</code>: Compute given two partitions</li>
<li><code>p = PairCoefficients,q = missing</code>: Compute given the pair coefficients</li>
</ul>

Methods (by class)

Fabian Ball <a href="/link/fabian.ball%40kit.edu?package=partitionComparison&version=0.2.5" data-mini-rdoc="partitionComparison::fabian.ball@kit.edu">fabian.ball@kit.edu</a>

Author

Sokal &amp; Sneath Index 3 — sokalSneath3

<dl>

<dt>p</dt>
<dd>The partition $P$ or an instance of PairCoefficients</dd>


<dt>q</dt>
<dd>The partition $Q$ or NULL</dd>

</dl>

Fabian Ball <a href='mailto:fabian.ball@kit.edu'>fabian.ball@kit.edu</a>

sokalSneath3: Sokal & Sneath Index 3

Description

Usage

Arguments

Methods (by class)

Author

References

Examples