Extending the feature dictionary to support sophisticated feature interaction and classification

The feature dictionary of a Bayesian diagnostic system is expanded to include feature interactions to support test selection and treatment protocols. The feature interactions required to provide this flexibility are drug side effects and allergic reactions, contraindications to tests and treatment, and drug interactions. Although the primary use of the dictionary is to store the feature information to be used by the MEDAS (Medical Emergency Decision Assistance System) diagnostic system, adding further functionality allows other applications, both inside and outside of MEDAS, to be supported. Generic and brand names of drugs appear as synonyms in the dictionary. This widens the ability to translate data from one system to another