unlabeled example

An example that contains features but no label. For example, the following table shows three unlabeled examples from a house valuation model, each with three features but no house value: House age | --- | 15 | 72 | 34 | In supervised machine learning, models train on labeled examples and make predictions on unlabeled examples. In semi-supervised and unsupervised learning, unlabeled examples are used during training. Contrast unlabeled example with labeled example.

Practitioners refer to unlabeled example when building, training, or evaluating machine learning systems. It appears in research papers, product documentation, and technical discussions about AI capabilities and limitations.