Book Image

Applied Machine Learning Explainability Techniques

By : Aditya Bhattacharya
Book Image

Applied Machine Learning Explainability Techniques

By: Aditya Bhattacharya

Overview of this book

Explainable AI (XAI) is an emerging field that brings artificial intelligence (AI) closer to non-technical end users. XAI makes machine learning (ML) models transparent and trustworthy along with promoting AI adoption for industrial and research use cases. Applied Machine Learning Explainability Techniques comes with a unique blend of industrial and academic research perspectives to help you acquire practical XAI skills. You'll begin by gaining a conceptual understanding of XAI and why it's so important in AI. Next, you'll get the practical experience needed to utilize XAI in AI/ML problem-solving processes using state-of-the-art methods and frameworks. Finally, you'll get the essential guidelines needed to take your XAI journey to the next level and bridge the existing gaps between AI and end users. By the end of this ML book, you'll be equipped with best practices in the AI/ML life cycle and will be able to implement XAI methods and approaches using Python to solve industrial problems, successfully addressing key pain points encountered.
Table of Contents (16 chapters)
1
Section 1 – Conceptual Exposure
5
Section 2 – Practical Problem Solving
12
Section 3 –Taking XAI to the Next Level

Explaining deep learning models using DeepExplainer and GradientExplainer

In the previous section, we covered the use of TreeExplainer in SHAP, which is a model-specific explainability method only applicable to tree ensemble models. We will now discuss GradientExplainer and DeepExplainer, two other model-specific explainers in SHAP that are mostly used with deep learning models.

GradientExplainer

As discussed in Chapter 2, Model Explainability Methods, one of the most widely adopted ways to explain deep learning models trained on unstructured data such as images is layer-wise relevance propagation (LRP). LRP is about analyzing the gradient flow for the intermediate layers of the deep neural network. SHAP GradientExplainers also function in a similar way. As discussed in Chapter 6, Model Interpretability Using SHAP, GradientExplainer combines the idea of SHAP, integrated gradients, and SmoothGrad into a single expected value equation. GradientExplainer finally uses a sensitivity...