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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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Cluster Evaluation Metrics

Evaluating the results of clustering is crucial to assess the quality and relevance of the groupings discovered by unsupervised algorithms. However, unlike supervised learning, clustering lacks true labels or target values we’re trying to predict, so we rely on internal and external evaluation metrics such as the silhouette score, Davies-Bouldin index, and adjusted Rand index to determine how well the model has performed. Again, with unsupervised learning techniques, evaluation can be seen as more of an art than science, but we can still make educated decisions with the right tools. This recipe explores some methods for evaluating your clustering techniques and optimizing your solution.

Getting ready

To begin, we’ll load our evaluation metrics, create a dummy data set and fit a K-means clustering model.

  1. Load the libraries:

    from sklearn.metrics import silhouette_score, davies_bouldin_score, adjusted_rand_score
    from sklearn.datasets import make_blobs...
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