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manual calculation of NeuralNet predictions


Hi,
Can someone pls let me know how to calculate a prediction (continuous) from a set of input variables (continuous) using the weights and bias at hidden nodes (sigmoid) and the output node (linear)? This is to manually verify the results obtained from neuralnet.
Thanks
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Best Answer
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darshi_plm Member Posts: 3
Contributor I
Thanks a lot.
I have used the NeuralNet output weights to calculate the sigmoid transformation of weighted sum of the inputs. The mistake I have made was calculating the output without realizing that NeuralNet has normalised the attributes to fall within -1 and 1. Now all sorted.2
Answers
Maybe this can help you: https://excel.ucf.edu/classes/2007/Spring/appsII/Chapter1.pdf