Preliminary Experiments on Using Subjective Logic for Reasoning on Diagnosis

Abstract

We present a system which implements a set of Subjective Logic operators, namely conjunction, abduction, deduction and fusion. The system’s purpose was to investigate some patterns in the medical reasoning and to see whether they can be modeled using this subset of Subjective Logic. This approach would allow dealing seamlessly with rules of reasoning whose uncertainty level adjusts once more evidence becomes available. Our system allows assessing the rule confidence level in a programmatic way, based on the data stored in a database containing the previous patient examinations. It is also able to reason based on those rules and the input from the patient and to justify the conclusion.