compute_wmcc

Computes the Weighted Matthews Correlation Coefficient (WMCC) from
confusion matrix counts (Madeyski, Kitchenham and Shepperd 2026, Equation 6). Each
positive example (<code>TP</code>, <code>FN</code>) is weighted by <code>w</code> and each negative
example (<code>TN</code>, <code>FP</code>) by 1 before the standard MCC formula is applied, where
<code>w</code> is the FN:FP cost ratio (a missed relevant study is <code>w</code> times more
costly than screening an irrelevant one). <code>w = 1</code> reduces to the standard MCC
(<code>compute_mcc</code>). The function is vectorised over the confusion matrix
counts.

Includes data analysis and meta-analysis functions (e.g., to
calculate effect sizes and 95% Confidence Intervals (CI) on Standardised
Effect Sizes (d) for AB/BA cross-over repeated-measures experimental
designs), data presentation functions (e.g., density curve overlaid on
histogram),and the data sets analyzed in different research papers in
software engineering (e.g., related to software defect prediction or multi-
site experiment concerning the extent to which structured abstracts were
clearer and more complete than conventional abstracts) to streamline
reproducible research in software engineering.

Lech Madeyski

reproducer

Reproduce Statistical Analyses and Meta-Analyses

Barbara Kitchenham

Tomasz Lewowski

Marian Jureczko

David Budgen

Pearl Brereton

Jacky Keung

Stuart Charters

Shirley Gibbs

Amnart Pohthong

Giuseppe Scanniello

Carmine Gravino

compute_wmcc function

<dl><dt>TP</dt>
<dd>the number of true positives (scalar or vector).</dd>
<dt>FP</dt>
<dd>the number of false positives (scalar or vector).</dd>
<dt>FN</dt>
<dd>the number of false negatives (scalar or vector).</dd>
<dt>TN</dt>
<dd>the number of true negatives (scalar or vector).</dd>
<dt>w</dt>
<dd>the FN:FP cost ratio (default 10).</dd></dl>

Arguments

Author

compute_wmcc — compute_wmcc

<dl>

<dt>TP</dt>
<dd>the number of true positives (scalar or vector).</dd>


<dt>FP</dt>
<dd>the number of false positives (scalar or vector).</dd>


<dt>FN</dt>
<dd>the number of false negatives (scalar or vector).</dd>


<dt>TN</dt>
<dd>the number of true negatives (scalar or vector).</dd>


<dt>w</dt>
<dd>the FN:FP cost ratio (default 10).</dd>

</dl>

compute_wmcc: compute_wmcc

Description

Usage

Value

Arguments

Author

References

Examples