dt_set_cleanfactorlevels

Finds all factors in a data.table and cleans factor levels to include
only underscore symbols

Machine learning and visualization package with an 'S7' backend featuring
comprehensive type checking and validation, observable runs, and auditable outputs.
The functional API provides one-call access to supervised and unsupervised learning
through train(), cluster(), and decomp(). All configuration steps are performed using
setup functions and validated. A single call to train() can handle preprocessing,
decomposition, hyperparameter tuning, model stacking, and testing with nested resampling.
Supports 'data.frame', 'data.table', and 'tibble' inputs and parallel execution. Plot
methods for trained and resampled supervised models draw interactive figures through
'rtemis.draw'. Includes native implementations of SuperLearner, RuleFit, and Linear
Additive Trees, and supports conformal prediction. The package first appeared in
E.D. Gennatas (2017)
<https://repository.upenn.edu/entities/publication/d81892ea-3087-4b71-a6f5-739c58626d64>.

Efstathios D. Gennatas

rtemis

Schema-Driven Machine Learning and Visualization

E.D. Gennatas

dt_set_cleanfactorlevels function

<dl><dt>x</dt>
<dd>data.table: Input data.table. Will be modified in-place.</dd>
<dt>prefix_digits</dt>
<dd>Character: If not NA, add this prefix to all factor levels that
are numbers</dd></dl>

Arguments

Author

Clean factor levels of data.table in-place — dt_set_cleanfactorlevels

<dl>

<dt>x</dt>
<dd>data.table: Input data.table. Will be modified in-place.</dd>


<dt>prefix_digits</dt>
<dd>Character: If not NA, add this prefix to all factor levels that
are numbers</dd>

</dl>

dt_set_cleanfactorlevels: Clean factor levels of data.table in-place

Description

Usage

Value

Arguments

Author

Examples