What is classification?
In this section, we will discuss supervised classification techniques. The classification process is a technique used to arrange data into a fixed number of categories so that it can be used effectively and efficiently.
In machine learning, classification is used to identify the category to which a new datapoint belongs. A classification model is built based on the training dataset containing datapoints and the corresponding labels. For example, let's say that we want to determine whether a given image contains a person's face or not. We would build a training dataset containing classes corresponding to two classes: face and no-face. A model would then be trained based on the available training samples. The trained model can then be used for inference.
A good classification system makes it easy to find and retrieve data. Classification is used extensively in face recognition, spam identification, recommendation engines, and so on. A good...