For machine learningMachine learning (or ML) is a process by which machines can be trained to perform tasks that required humans before. It's based on analysis of lots of data, and it might affect how some IoT devices work., this refers to the process of making decisions using a modelA simplified representation of something real. We can create models of things in our heads without even realizing we're doing it. Technology often involves models because they let us simplify what would otherwise be extremely detailed, complicated concepts by focusing only on essential elements.. Before the decisions can be made accurately, trainingWith machine learning, a model must be trained in order to perform its function (which is called inference). must occur.