Book Image

Mastering Azure Machine Learning - Second Edition

By : Christoph Körner, Marcel Alsdorf
Book Image

Mastering Azure Machine Learning - Second Edition

By: Christoph Körner, Marcel Alsdorf

Overview of this book

Azure Machine Learning is a cloud service for accelerating and managing the machine learning (ML) project life cycle that ML professionals, data scientists, and engineers can use in their day-to-day workflows. This book covers the end-to-end ML process using Microsoft Azure Machine Learning, including data preparation, performing and logging ML training runs, designing training and deployment pipelines, and managing these pipelines via MLOps. The first section shows you how to set up an Azure Machine Learning workspace; ingest and version datasets; as well as preprocess, label, and enrich these datasets for training. In the next two sections, you'll discover how to enrich and train ML models for embedding, classification, and regression. You'll explore advanced NLP techniques, traditional ML models such as boosted trees, modern deep neural networks, recommendation systems, reinforcement learning, and complex distributed ML training techniques - all using Azure Machine Learning. The last section will teach you how to deploy the trained models as a batch pipeline or real-time scoring service using Docker, Azure Machine Learning clusters, Azure Kubernetes Services, and alternative deployment targets. By the end of this book, you’ll be able to combine all the steps you’ve learned by building an MLOps pipeline.
Table of Contents (23 chapters)
1
Section 1: Introduction to Azure Machine Learning
5
Section 2: Data Ingestion, Preparation, Feature Engineering, and Pipelining
11
Section 3: The Training and Optimization of Machine Learning Models
17
Section 4: Machine Learning Model Deployment and Operations

Understanding dimensional reduction techniques

We looked at a lot of ways to visualize data in the previous sections, but high-dimensional data cannot be easily and accurately visualized in two dimensions. To achieve this, we need a projection of some sort or an embedding technique to embed the feature space in two dimensions. There are many linear and non-linear embedding techniques that you can use to produce two-dimensional projections of data. The following are the most common ones:

  • Principal Component Analysis (PCA)
  • Linear Discriminant Analysis (LDA)
  • t-Distributed Stochastic Neighbor Embedding (t-SNE)
  • Uniform Manifold Approximation and Projection (UMAP)

The following diagram shows the LDA and t-SNE embeddings for the 13-dimensional UCI Wine Recognition dataset (https://archive.ics.uci.edu/ml/datasets/wine). In the LDA embedding, we can see that all the classes should be linearly separable. That's a lot we have learned from using two lines of code...