Tutorial - FuzzyR: Fuzzy Logic Toolkit for R

Chao Chen, University of Nottingham, UK; Jon Garibaldi, (University of Nottingham,UK ABSTRACT: FuzzyR is a free, open-source fuzzy logic toolbox for the R programming language. Whilst keeping existing functionalities of the previous toolboxes (e.g. FuzzyToolkitUoN), the main extension of the FuzzyR toolbox is the capability to optimise type-1 and interval type-2 fuzzy inference systems based on an extended ANFIS architecture. An accuracy function is also added to provide performance indicators, featuring eight alternative accuracy measures, including a new measure UMBRAE. In addition, graphical user interfaces have been provided so that the properties of a fuzzy inference system can be visualised and manipulated. In the latest release we have made an extension of the toolbox for non-singleton fuzzy logic systems.