The four volume set LNCS 9489, LNCS 9490, LNCS 9491, andLNCS 9492 constitutes the proceedings of the 22nd International Conference onNeural Information Processing, ICONIP 2015, held in Istanbul, Turkey, inNovember 2015. The 231 full papers presented were carefully reviewed andselected from 375 submissions. The 4 volumes represent topical sectionscontaining articles on Learning Algorithms and Classification Systems;Artificial Intelligence and Neural Networks: Theory, Design, and Applications;Image and Signal Processing; and Intelligent Social Networks.