Rectified Linear Unit (ReLU)

What is Rectified Linear Unit (ReLU)?

ReLU (Rectified Linear Unit) outputs max(0, x), a simple nonlinearity that sped up deep network training.

What this looks like in production

In production, teams encounter Rectified Linear Unit (ReLU) when building, evaluating, or securing model and agent pipelines.

What teams usually do about it

• Document expected behavior and evaluation criteria for this concept.
• Add automated checks where the risk or metric is measurable.
• Re-test after model, data, or prompt changes.

Further reading: Wikipedia: Rectifier (neural networks).