Query-level features, randomized weighted majority, and rule-based machine learning

Rule-based machine learning techniques consist of learning classifier systems, association rule learning, artificial immune systems, and any other technique that relies on a collection of rules containing contextual knowledge. Although rule-based machine learning is essentially a rule-based system, it is unique from traditional rule-based systems, which are often hand-crafted, and other rule-based decision-makers. It is because rule-based machine learning uses a learning algorithm to identify good rules automatically, rather than requiring a human to manually design and curate a rule set using prior domain expertise.