y=f() Exercise 4 find y1 ∑[o(1)x(i)]+b 1+e Neurons are indexed by i x,(n的whe.n=([x+b NAl l=9 O.1 2 .6 i=l 0.3,5 b三0.7 05Y1 ,27 0.25 NAQ O.15 l=2 0.8 Z=2 b=0.6 X=0.5 b=0.3 Z=9 ouput layer Hidden layer Neural Networks Ch9 Input layerExercise 4: find Y1 • Neural Networks Ch9. , ver. 9b 28 l=1 i=2 l=1 i=3 l=1 i=1 l=2 i=1 b=0.5 l=2 i=2 b=0.3 l=3 i=1 b=0.7 l=3 i=2 b=0.6 W(j=3,i=2) 0.15 0.73 0.27 0.1 0.35 0.4 0.6 0.35 0.8 0.25 Input layer Hidden layer ouput layer Y1 =? y2 X=1 X=3.1 X=0.5 NA1 NA2           =  + + = = = =       −  + = = i I i i x i u ω(i)x(i) b e y f u i I i 1 ( ) ( ) b where, 1 1 ( ) 1  Layers are indexed by l Neurons are indexed by i Weights are indexed by j b=bias