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scikit-learn (sklearn) is a powerful machine learning library in Python. Here are some tricks and techniques that can help you use scikit-learn more effectively and elegantly:
1. Pipeline for Preprocessing and Modeling:
from sklearn.pipeline import make_pipeline
from sklearn.preprocessing import StandardScaler
from sklearn.svm import SVC
model = make_pipeline(StandardScaler(), SVC())
model.fit(X_train, y_train)
2. Grid Search for Hyperparameter Tuning:
from sklearn.model_selection import GridSearchCV
param_grid = {'C': [0.1, 1, 10], 'kernel': ['linear', 'rbf']}
grid_search = GridSearchCV(SVC(), param_grid, cv=5)
grid_search.fit(X_train, y_train)
3. Train-Test Split:
from sklearn.model_selection import train_test_split
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
4. Cross-Validation Scoring:
from sklearn.model_selection import cross_val_score
scores = cross_val_score(model, X, y, cv=5)
5. Feature Scaling with StandardScaler:
from sklearn.preprocessing import…