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scikit-learn Cookbook

scikit-learn Cookbook - Third Edition

By : John Sukup
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scikit-learn Cookbook

scikit-learn Cookbook

By: John Sukup

Overview of this book

Trusted by data scientists, ML engineers, and software developers alike, scikit-learn offers a versatile, user-friendly framework for implementing a wide range of ML algorithms, enabling the efficient development and deployment of predictive models in real-world applications. This third edition of scikit-learn Cookbook will help you master ML with real-world examples and scikit-learn 1.5 features. This updated edition takes you on a journey from understanding the fundamentals of ML and data preprocessing, through implementing advanced algorithms and techniques, to deploying and optimizing ML models in production. Along the way, you’ll explore practical, step-by-step recipes that cover everything from feature engineering and model selection to hyperparameter tuning and model evaluation, all using scikit-learn. By the end of this book, you’ll have gained the knowledge and skills needed to confidently build, evaluate, and deploy sophisticated ML models using scikit-learn, ready to tackle a wide range of data-driven challenges. *Email sign-up and proof of purchase required
Table of Contents (17 chapters)
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Handling Detected Outliers

Once outliers have been identified, we face an important decision: how should we handle them? The appropriate strategy depends on the context of the problem and the nature of the data. Outliers can be informative (e.g., fraud cases) or disruptive (e.g., sensor glitches) and choosing how to treat them affects model performance and interpretability.

This recipe outlines common strategies for handling outliers, including removal, transformation, imputation, and retaining them for specialized modeling. We’ll walk through practical code examples to demonstrate each approach.

Getting ready

We’ll use a dataset that includes outliers detected via the Isolation Forest method.

  1. Load the libraries:

    import numpy as np
    import matplotlib.pyplot as plt
    import pandas as pd
    from sklearn.ensemble import IsolationForest
    from sklearn.datasets import make_blobs
  2. Generate the dataset:

    X_inliers, _ = make_blobs(n_samples=300, centers=[[0, 0]], cluster_std=0.6, random_state...
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