What is Data Annotation and How is it Used in Machine Learning? Lionbridge AI

Data annotation is the task of labeling data, which could be in any form such as text, audio, images, or video. In this article, we'll explore the different types and uses for data annotation in machine learning. Data scientists need to use clean, annotated data to train machine learning models. Data annotation is an indispensable stage of data preprocessing in supervised learning. Machine learning models learn to recognize recurring patterns in the annotated data.