Artificial Neural Networks and Machine Learning – ICANN 2013 23rd International Conference on Artificial Neural Networks Sofia, Bulgaria, September 10-13, 2013. Proceedings - Mladenov, Valeri; Koprinkova-Hristova, Petia; Palm, Günther; Villa, Alessandro E. P.; Appollini, Bruno; Kasabov, Nikola (Springer Berlin Heidelberg : Imprint: Springer, 2013)