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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.
Table of Contents (17 chapters)
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Maximizing Class Separability with LDA

LDA is a powerful dimensionality reduction technique that is particularly useful for supervised learning tasks, especially in classification problems. Unlike PCA, which focuses on maximizing variance across all data points without considering class labels, LDA aims to maximize class separability.

Getting ready

We will use the same Wine dataset used previously, so we do not have to load it again.

How to do it…

As we saw with PCA, LDA only requires loading a single scikit-learn class to perform it on your dataset. We will also be using the Pipeline() class to string together our scaling prior to applying LDA.

  1. Load libraries:

    from sklearn.discriminant_analysis import LinearDiscriminantAnalysis
  2. Split wine dataset by features and target:

    X_wine, y_wine = wine.data, wine.target
  3. Create LDA pipeline for wine dataset:

    lda_pipeline_wine = Pipeline([
        (‘scaler’, StandardScaler()),
        (‘lda’, LinearDiscriminantAnalysis...
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