Preface

This is the current version of the open-access book Data Collection with Wearable, Apps, and Sensors. We are still in the process of writing this book and will continuously provide updates and add more content. A printed version of the final book will be published in the Chapman & Hall/CRC Data Science Series.

Currently, the following chapters of the book are available online:

Chapter 1: Introduction
Chapter 4: Errors of nonobservation: Sampling and coverage

We highly value feedback on the current state of our book. If you have comments, found typos or factual errors, or want to provide other type of feedback, please contact us at wasbook.feedback@gmail.com.

We hope you find this book helpful.

Florian Keusch, University of Mannheim
Bella Struminskaya, Utrecht University
Stephanie Eckman, Amazon
Heidi Guyer, RTI International