Book Image

Learn Amazon SageMaker

By : Julien Simon
Book Image

Learn Amazon SageMaker

By: Julien Simon

Overview of this book

Amazon SageMaker enables you to quickly build, train, and deploy machine learning (ML) models at scale, without managing any infrastructure. It helps you focus on the ML problem at hand and deploy high-quality models by removing the heavy lifting typically involved in each step of the ML process. This book is a comprehensive guide for data scientists and ML developers who want to learn the ins and outs of Amazon SageMaker. You’ll understand how to use various modules of SageMaker as a single toolset to solve the challenges faced in ML. As you progress, you’ll cover features such as AutoML, built-in algorithms and frameworks, and the option for writing your own code and algorithms to build ML models. Later, the book will show you how to integrate Amazon SageMaker with popular deep learning libraries such as TensorFlow and PyTorch to increase the capabilities of existing models. You’ll also learn to get the models to production faster with minimum effort and at a lower cost. Finally, you’ll explore how to use Amazon SageMaker Debugger to analyze, detect, and highlight problems to understand the current model state and improve model accuracy. By the end of this Amazon book, you’ll be able to use Amazon SageMaker on the full spectrum of ML workflows, from experimentation, training, and monitoring to scaling, deployment, and automation.
Table of Contents (19 chapters)
1
Section 1: Introduction to Amazon SageMaker
4
Section 2: Building and Training Models
11
Section 3: Diving Deeper on Training
14
Section 4: Managing Models in Production

Deploying inference pipelines

Real-life machine learning scenarios often involve more than one model. For example,you may need to run preprocessing steps on incoming data or reduce its dimensionality with the PCA algorithm.

Of course, you could deploy each model to a dedicated endpoint. However, orchestration code would be required to pass prediction requests to each model in sequence. Multiplying endpoints would also introduce additional costs.

Instead, inference pipelines let you deploy up to five models on the same endpoint or for batch transform, and automatically handle the prediction sequence.

Let's say that we wanted to run PCA and then Linear Learner. Building the inference pipeline would look like this:

  1. Train the PCA model on the input dataset.
  2. Process the training and validation sets with PCA and store the results in S3. Batch Transform is a good way to do this.
  3. Train the Linear Learner using the datasets processed by PCA as input.
  4. Use the...