Rule Based System
A rule based system is an AI or software system that uses a set of predefined rules to make decisions or draw conclusions. It operates by applying logical rules (typically in 'if-then' format) to input data to produce outputs, often used in expert systems, business logic, and automation. These systems are deterministic and rely on explicit knowledge representation rather than learning from data.
Developers should learn rule based systems when building applications requiring transparent, explainable decision-making, such as in regulatory compliance, diagnostic tools, or business process automation. They are particularly useful in domains where rules are well-defined and stable, offering simplicity and ease of maintenance compared to machine learning models in scenarios with limited or no training data.