====== Neural Network backpropagation Calculation ======
실제계산 https://mattmazur.com/2015/03/17/a-step-by-step-backpropagation-example/
공학용 계산기 https://www.desmos.com/scientific

(sigmoid f(x))' = f(x)(1-f(x))

==== setting ====
{{:data_analysis:pasted:20200419-134043.png}}

==== initial ====
{{:data_analysis:pasted:20200419-134105.png}}

==== Error Value ====
{{:data_analysis:pasted:20200419-134130.png}}

==== output layer ====
{{:data_analysis:pasted:20200419-134200.png}}

==== hidden layer ====
{{:data_analysis:pasted:20200419-134227.png}}

{{tag>data_analysis Neural_network backpropagation 데이터면접문제 역전파 딥러닝}}
~~DISCUSSION~~