Piece-wise quadratic approximations of arbitrary error functions for fast and robust machine learning

Recommended citation: Gorban AN, Mirkes EM, Zinovyev A. Piece-wise quadratic approximations of arbitrary error functions for fast and robust machine learning. Neural Netw. 2016, 84:28-38. https://www.sciencedirect.com/science/article/pii/S0893608016301113