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sklearn-genetic-opt | sklearn-genetic-opt
Rodrigo Arenas Gómez · 2026-06-24 · via Show HN

sklearn-genetic-optEvolutionary hyperparameter tuning

Tune XGBoost, LightGBM, CatBoost, and any scikit-learn estimator using genetic algorithms — evolutionary hyperparameter search and wrapper-based feature selection, powered by DEAP.

sklearn-genetic-opt logo

GASearchCV

Hyperparameter search across classification, regression, and outlier-detection estimators using evolutionary operators.

GAFeatureSelectionCV

Wrapper-based feature selection with cross-validation — find the compact subset that maximises your score.

Smart Initialization

Latin hypercube sampling, estimator defaults, and warm-start seeds produce a better initial population than pure random.

Diversity Control

Adaptive mutation/crossover, random immigrants, and fitness sharing prevent premature convergence.

Callbacks & MLflow

Early stopping, progress bars, checkpoints, TensorBoard, and MLflow 3 logging out of the box.

scikit-learn Compatible

Follows the familiar fit/predict/best_params_ API — drop it in wherever you'd use GridSearchCV.

Boost Library Support

Works with XGBoost, LightGBM, and CatBoost out of the box — comprehensive tutorials tuning 7–9 hyperparameters with parameter interactions the GA captures naturally.

Imbalanced Learning

Tune class_weight as a search parameter alongside model hyperparameters. Optimize balanced_accuracy or F1 directly instead of misleading accuracy.

Comprehensive Tutorials

Step-by-step walkthroughs for gradient-boosting libraries, multi-stage feature selection, and imbalanced classification — each with baseline comparisons and visualizations.