Biologically-Plausible Learning Algorithms Can Scale to Large Datasets by Will Xiao, Honglin Chen, Qianli Liao and Tomaso Poggio
 Department of Molecular and Cellular Biology, Harvard University
 Center for Brains, Minds, and Machines, MIT
Background Consider a layer in a feedforward neural network. Let xi denote the input to the i th neuron in the layer and yj the output of the j th neuron. Let W denote the feedforward weight matrix and Wij the connection between input xi and output y.