Fuzzy Techniques: Theory and Applications Proceedings of the 2019 Joint World Congress of the International Fuzzy Systems Association and the Annual Conference of the North American Fuzzy Information Processing Society IFSA/NAFIPS'2019 (Lafayette, Louisiana, USA, June 18-21, 2019) - Kearfott, Ralph Baker; Kearfott, Ralph Baker; Batyrshin, Ildar; Batyrshin, Ildar; Reformat, Marek; Reformat, Marek; Ceberio, Martine; Ceberio, Martine; Kreinovich, Vladik; Kreinovich, Vladik (Springer International Publishing : Imprint: Springer, 2019)