wichita.edu
…ambiguous characteristics, 2) unspecified degree of importance for individual characteristics in defining the surface, 3) different identification techniques for various datasets, and 4) various and often conflicting genetic interpretations attributed to descriptive definitions. The fuzzy logic methods of "fuzzy classifier design" and "fuzzy inference…
https://www.wichita.edu/academics/fairmount_las/geology/wparcell/GeoLOGIC/FuzzyStrat.php