Name | felimination JSON |
Version |
0.2.2
JSON |
| download |
home_page | |
Summary | This library contains some useful scikit-learn compatible classes for feature selection. |
upload_time | 2024-01-15 12:37:36 |
maintainer | |
docs_url | None |
author | |
requires_python | >=3.7 |
license | |
keywords |
feature selection
scikit-learn
machine learning
|
VCS |
|
bugtrack_url |
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requirements |
No requirements were recorded.
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# felimination
This library contains some useful scikit-learn compatible classes for feature selection.
## Features
- [Recursive Feature Elimination with Cross Validation using Permutation Importance](reference/RFE.md#felimination.rfe.PermutationImportanceRFECV)
## Requirements
- Python 3.7+
- NumPy
- Scikit-learn
- Pandas
## Installation
In a terminal shell run the following command
```
pip install felimination
```
## Usage
```python
from felimination.rfe import PermutationImportanceRFECV
from sklearn.linear_model import LogisticRegression
from sklearn.datasets import make_classification
import numpy as np
X, y = make_classification(
n_samples=1000,
n_features=20,
n_informative=6,
n_redundant=10,
n_clusters_per_class=1,
random_state=42,
)
selector = PermutationImportanceRFECV(LogisticRegression(), step=0.3)
selector.fit(X, y)
selector.support_
# array([False, False, False, False, False, False, False, False, False,
# False, False, True, False, False, False, False, False, False,
# False, False])
selector.ranking_
# array([9, 3, 8, 9, 7, 8, 5, 6, 9, 6, 8, 1, 9, 7, 8, 9, 9, 2, 4, 7])
selector.plot()
```
![example of plot](./docs/assets/example_plot.png)
It looks like `5` is a good number of features, we can set the number of features to select to 5 without need of retraining
```python
selector.set_n_features_to_select(5)
selector.support_
# array([False, True, False, False, False, False, True, False, False,
# False, False, True, False, False, False, False, False, True,
# True, False])
```
## License
This project is licensed under the BSD 3-Clause License - see the LICENSE.md file for details
## Acknowledgments
- [scikit-learn](https://scikit-learn.org/)
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