Advances and trends in artificial intelligence : from theory to practice : 32nd International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems, IEA/AIE 2019, Graz, Austria, July 9-11, 2019, Proceedings. - Wotawa, Franz; Friedrich, Gerhard 1961-; Pill, Ingo; Koitz-Hristov, Roxane; Ali, Moonis 1944- (Lecture notes in computer science. Lecture notes in artificial intelligence / editors Randy Goebel, Yuzuru Tanaka, Wolfgang Wahlster, 2019)