Book Image

AWS Certified Machine Learning Specialty: MLS-C01 Certification Guide

By : Somanath Nanda, Weslley Moura
Book Image

AWS Certified Machine Learning Specialty: MLS-C01 Certification Guide

By: Somanath Nanda, Weslley Moura

Overview of this book

The AWS Certified Machine Learning Specialty exam tests your competency to perform machine learning (ML) on AWS infrastructure. This book covers the entire exam syllabus using practical examples to help you with your real-world machine learning projects on AWS. Starting with an introduction to machine learning on AWS, you'll learn the fundamentals of machine learning and explore important AWS services for artificial intelligence (AI). You'll then see how to prepare data for machine learning and discover a wide variety of techniques for data manipulation and transformation for different types of variables. The book also shows you how to handle missing data and outliers and takes you through various machine learning tasks such as classification, regression, clustering, forecasting, anomaly detection, text mining, and image processing, along with the specific ML algorithms you need to know to pass the exam. Finally, you'll explore model evaluation, optimization, and deployment and get to grips with deploying models in a production environment and monitoring them. By the end of this book, you'll have gained knowledge of the key challenges in machine learning and the solutions that AWS has released for each of them, along with the tools, methods, and techniques commonly used in each domain of AWS ML.
Table of Contents (14 chapters)
Section 1: Introduction to Machine Learning
Section 2: Data Engineering and Exploratory Data Analysis
Section 3: Data Modeling

Text to speech with Amazon Polly

Amazon Polly is all about converting text into speech, and does so using pretrained deep learning models. It's a fully managed service, so we don't have to do anything. You provide the plain text as input for synthesizing or in Speech Synthesis Markup Language (SSML) format so that an audio stream is returned. It also gives you different languages and voices to choose from, with both male and female options. The output audio from Amazon Polly can be saved in MP3 format for further usage in the application (web or mobile) or can be a JSON output for written speech.

For example, if we were to input the text "Baba went to the library" into Amazon Polly, the output speech mark object would look as follows:


The word "went" begins 370 milliseconds after the audio stream begins, and starts...