Jirà SÃma. Training a Single Sigmoidal Neuron Is Hard. Neural Computation, 14(11):2709-2728, 2002. [doi]
@article{Sima02-0, title = {Training a Single Sigmoidal Neuron Is Hard}, author = {Jirà SÃma}, year = {2002}, url = {http://neco.mitpress.org/cgi/content/abstract/14/11/2709}, researchr = {https://researchr.org/publication/Sima02-0}, cites = {0}, citedby = {0}, journal = {Neural Computation}, volume = {14}, number = {11}, pages = {2709-2728}, }