Book Image

Interpretable Machine Learning with Python - Second Edition

By : Serg Masís
4 (4)
Book Image

Interpretable Machine Learning with Python - Second Edition

4 (4)
By: Serg Masís

Overview of this book

Interpretable Machine Learning with Python, Second Edition, brings to light the key concepts of interpreting machine learning models by analyzing real-world data, providing you with a wide range of skills and tools to decipher the results of even the most complex models. Build your interpretability toolkit with several use cases, from flight delay prediction to waste classification to COMPAS risk assessment scores. This book is full of useful techniques, introducing them to the right use case. Learn traditional methods, such as feature importance and partial dependence plots to integrated gradients for NLP interpretations and gradient-based attribution methods, such as saliency maps. In addition to the step-by-step code, you’ll get hands-on with tuning models and training data for interpretability by reducing complexity, mitigating bias, placing guardrails, and enhancing reliability. By the end of the book, you’ll be confident in tackling interpretability challenges with black-box models using tabular, language, image, and time series data.
Table of Contents (17 chapters)
15
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16
Index

Placing guardrails with feature engineering

In Chapter 6, Anchors and Counterfactual Explanations, we learned that besides race, the features most prominent in our explanations were age, priors_count, and c_charge_degree. Thankfully, the data is now balanced, so the racial bias attributed to this imbalance is now gone. However, through anchors and counterfactual explanations, we found some troubling inconsistencies. In the case of age and priors_count, these inconsistencies were due to how those features were distributed. We can correct issues with distribution through feature engineering, and, that way, ensure that a model doesn’t learn from uneven distributions. In c_charge_degree's case, being categorical, it lacked a discernible order, and this lack of order created unintuitive explanations.

In this section, we will study ordinalization, discretization, and interaction terms, three ways in which you can place guardrails through feature engineering.

Ordinalization...