A Comparative Study of Two Rule-Based Explanation Methods for Diabetic Retinopathy Risk Assessment

Identifier:  imarina:9261338

Handle: https://hdl.handle.net/20.500.11797/imarina9261338

Authors:  Maaroof, Najlaa; Moreno, Antonio; Valls, Aida; Jabreel, Mohammed; Szelag, Marcin

Abstract:
Understanding the reasons behind the decisions of complex intelligent systems is crucial in many domains, especially in healthcare. Local explanation models analyse a decision on a single instance, by using the responses of the system to the points in its neighbourhood to build a surrogate model. This work makes a comparative analysis of the local explanations provided by two rule-based explanation methods on RETIPROGRAM, a system based on a fuzzy random forest that analyses the health record of a diabetic person to assess his/her degree of risk of developing diabetic retinopathy. The analysed explanation methods are C-LORE-F (a variant of LORE that builds a decision tree) and DRSA (a method based on rough sets that builds a set of rules). The explored methods gave good results in several metrics, although there is room for improvement in the generation of counterfactual examples.