What Does Unlabeled Data Mean?

Unlabeled data is a designation for pieces of data that have not been tagged with labels identifying characteristics, properties or classifications. Unlabeled data is typically used in various forms of machine learning.

Techopedia Explains Unlabeled Data

In types of machine learning called unsupervised machine learning, the machine learning program operates by evaluating sets of unlabeled data. Because the data does not have labels, the machine learning program has to identify each data piece on its properties and characteristics.