A weak AI is an AI that doesn't include any machine learning. It's instead based on a set of rules.

Examples of a weak AI include detecting when…

• A value is above or below a particular threshold.
• A value drifts too far away from a target
• A value is too far from its neighbouring assets
• A value is within a specific safe 'window' of operation.

There are several pre-made algorithms that provide rules-based AIs.