1. Approximation by superpositions of a sigmoidal function;Cybenko;Math. Control Signals Syst.,1989
2. On the approximate realization of continuous mappings by neural networks;Funahashi;Neural Netw.,1989
3. Upper bounds on the number of hidden neurons in feedforward networks with arbitrary bounded nonlinear activation functions;Huang;IEEE Trans. Neural Netw.,1998
4. Neural Networks: A Comprehensive Foundation;Haykin,1998
5. G.B. Huang, Q.Y. Zhu, C.K. Siew, Extreme learning machine: a new learning scheme of feedforward neural networks, in: Neural Networks, 2004. 2004 IEEE International Joint Conference on Proceedings, vol. 2. 2004, pp. 985–990.