fast_generate_synthetic

This function generates synthetic examples using the SMOTE algorithm.
For each example in the minority class, this function generates synthetic examples by interpolating between the example and its k nearest neighbors. This function is used in the <code>smote_classif</code> function.

Functions to classify mass spectra in known categories, and to determine discriminant mass-to-charge values. It includes easy-to-use functions for preprocessing mass spectra, functions to determine discriminant mass-to-charge values (m/z) from a library of mass spectra corresponding to different categories, and functions to predict the category (species, phenotypes, etc.) associated to a mass spectrum from a list of selected mass-to-charge values. If you use this package in your research, please cite the associated publication (<doi:10.1016/j.eswa.2025.128796>). For a comprehensive guide, additional applications, and detailed examples of using this package, please visit our GitHub repository (<https://github.com/agodmer/MSclassifR_examples>).

Alexandre Godmer

MSclassifR

Automated Classification of Mass Spectra

Quentin Giai Gianetto

Karen Druart

fast_generate_synthetic function

<dl> <dt>dat</dt>
<dd>A <code>data.frame</code> object.</dd>
 <dt>k</dt>
<dd>Number of nearest neighbors to consider.</dd>
 <dt>n</dt>
<dd>Number of synthetic examples to generate.</dd>
 <dt>p_code</dt>
<dd>Numeric code representing the distance metric to use:<ul>
<li>p &gt;= 1: p-norm</li>
<li>p = 0: Chebyshev</li>
<li>p = -1: Canberra</li>
<li>p = -2: Overlap (nominal attributes only)</li>
<li>p = -3: HEOM (Heterogeneous Euclidean-Overlap Metric)</li>
<li>p = -4: HVDM (Heterogeneous Value Difference Metric)</li>
</ul></dd></dl>

Arguments

Function generating synthetic examples using SMOTE — fast_generate_synthetic

<dl>

 <dt>dat</dt>
<dd>A <code>data.frame</code> object.</dd>


 <dt>k</dt>
<dd>Number of nearest neighbors to consider.</dd>


 <dt>n</dt>
<dd>Number of synthetic examples to generate.</dd>


 <dt>p_code</dt>
<dd>Numeric code representing the distance metric to use:<ul>
<li>p &gt;= 1: p-norm</li>
<li>p = 0: Chebyshev</li>
<li>p = -1: Canberra</li>
<li>p = -2: Overlap (nominal attributes only)</li>
<li>p = -3: HEOM (Heterogeneous Euclidean-Overlap Metric)</li>
<li>p = -4: HVDM (Heterogeneous Value Difference Metric)</li>
</ul></dd>

</dl>

fast_generate_synthetic: Function generating synthetic examples using SMOTE

Description

Usage

Value

Arguments

See Also