âBush lost reelection largely because of a recession that had already ended well before voting day,â frum wrote. The Twilight Vindication of George H.W. Bush Mark K. Updegrove October 20, 2013. As frum notes, Cruz is âa hugely smart, highly focused political player, with a clear-eyed view of political realities.â.
In biologically inspired neural networks, the activation function is usually an abstraction representing the rate of action potential firing in the cell.
The activation level of a neuron in an artificial neural network is a real number often limited to the range 0 to 1, or â1 to 1. In the case of an input neuron the value is obtained externally to the network. In the case of a hidden neuron or output neuron the value is obtained from the neuron's activation function. In neural networks, an activation function is the function that describes the output behaviour of a neuron. Most network architectures start by computing the weighted sum of the inputs (that is, the sum of the product of each input with the weight associated with that input.