Diagnostic Rule Extraction Using the Dempster-Shafer Theory Extended for Fuzzy Focal Elements
The Dempster-Shafer theory along with the fuzzy set theory are suitable tools for the medical diagnosis support. They can deal with medical knowledge uncertainty and data imprecision. This paper presents a study of medical knowledge representation by means of the Dempster-Shafer theory extended with the fuzzy set theory and introduces the new rule selection algorithm. The presented method gives an opportunity of interpretable and reliable rule extraction. The method is elaborated and its performance is tested on a popular medical data set. Results show that the presented method can be useful for the knowledge engineer and diagnostician cooperation due to the simple rule base and clear inference method.
KeywordsRule extraction Dempster-Shafer theory Fuzzy sets Medical diagnosis support Thyroid disease
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