plot_pfi

The plot_pfi() function generates feature importance estimates via
Permutation Feature Importance measuring performance degradation when each
feature's values are randomly permuted while holding all other features
constant. Provides model-agnostic importance ranking independent of
feature-target correlation patterns, capturing both linear and non-linear
predictive contributions to model performance.

A minimal library specifically designed to make the estimation of Machine Learning
(ML) techniques as easy and accessible as possible, particularly within the framework of
the Knowledge Discovery in Databases (KDD) process in data mining. The package provides
essential tools to structure and execute each stage of a predictive or classification
modeling workflow, aligning closely with the fundamental steps of the KDD methodology,
from data selection and preparation, through model building and tuning, to the
interpretation and evaluation of results using Sensitivity Analysis. The 'MLwrap' workflow
is organized into four core steps; preprocessing(), build_model(), fine_tuning(), and
sensitivity_analysis(). It also includes global and pairwise interaction analysis based on
Friedman’s H-statistic to support a more detailed interpretation of complex feature
relationships.These steps correspond, respectively, to data preparation and transformation,
model construction, hyperparameter optimization, and sensitivity analysis. The user can
access comprehensive model evaluation results including fit assessment metrics, plots,
predictions, and performance diagnostics for ML models implemented through 'Neural
Networks', 'Random Forest', 'XGBoost' (Extreme Gradient Boosting), and 'Support Vector
Machines' (SVM) algorithms. By streamlining these phases, 'MLwrap' aims to simplify the
implementation of ML techniques, allowing analysts and data scientists to focus on
extracting actionable insights and meaningful patterns from large datasets, in line with
the objectives of the KDD process.

Albert Sesé

MLwrap

Machine Learning Modelling for Everyone

Javier Martínez García

Juan José Montaño Moreno

plot_pfi function

<dl><dt>analysis_object</dt>
<dd>Fitted analysis_object with
'sensitivity_analysis(methods = "PFI")'.</dd>
<dt>show_table</dt>
<dd>Boolean. Whether to print PFI results table.</dd></dl>

Arguments

Plotting Permutation Feature Importance Barplot — plot_pfi

<dl>

<dt>analysis_object</dt>
<dd>Fitted analysis_object with
'sensitivity_analysis(methods = "PFI")'.</dd>


<dt>show_table</dt>
<dd>Boolean. Whether to print PFI results table.</dd>

</dl>

plot_pfi: Plotting Permutation Feature Importance Barplot

Description

Usage

Value

Arguments

See Also

Examples