Variable updation inside a for loop
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Hi all, i have written the following for loop which calculates an error through 3 set of input data. how do i update the value until the error reaches a threshold value. I want to add E3 to E1 at the start of each iteration.
%STEP 01 INITIALIZATION k = 1; neta = 0.2;%learning rate Lamda = 1; %ActF = 1/(1+exp(-1*Lamda*Tot));%Activation Function E = 0;%Current Error Emax = 0;%Maximum Error Epoch = 5000; % We will do 100 iterations for this Assignment x = [0.3 0.4 -1;0.1 0.6 -1;0.9 0.4 -1]; t = [0.88 0.82 0.57]; A = [0.2 0.2 0.2;0.2 0.2 0.2]; Whi = A';%weights from input to hidden layer B = [0.2 0.2 0.2]; Who = B';%%weights from hidden to output layer WeightsO3 = Whi(:,1); WeightsO4 = Whi(:,2); x1 = x(1,:); x2 = x(2,:); x3 = x(3,:); t1 = t(:,1); t2 = t(:,2); t3 = t(:,3);
E(Iter) = E;
for Iter = 1:Epoch
O3net_1stSet = x1*WeightsO3;%summation of Node 3 for 1st input O3_1stSet=sigmf(O3net_1stSet,[1 0]); O4net_1stSet = x1*WeightsO4; O4_1stSet=sigmf(O4net_1stSet,[1 0]); O5_1stSet = -1; Hidden_Layer_Outputs = [O3_1stSet O4_1stSet O5_1stSet]; O6_1stSet = Hidden_Layer_Outputs*Who; O6_1stSet = sigmf(O6_1stSet,[1 0]); E1 = ((t1-O6_1stSet)^2)/2 + E3 Delta6 = O6_1stSet*(1-O6_1stSet)*(t1-O6_1stSet); DeltaW = neta*Delta6*[O3_1stSet O4_1stSet O5_1stSet];%Weight difference input to hidden layer Delta3 = O3_1stSet*(1-O3_1stSet)*Who(1,1)*Delta6;%Hidden Layer Weight difference update Delta4 = O4_1stSet*(1-O4_1stSet)*Who(2,1)*Delta6; DeltaWO3 = neta*Delta3*[x1(1,1) x1(1,2) x1(1,3)]; DeltaWO4 = neta*Delta4*[x1(1,1) x1(1,2) x1(1,3)]; Who = Who + DeltaW'; WeightsO3 = WeightsO3 + DeltaWO3';%updated weights of input to Node 3 WeightsO4 = WeightsO4 + DeltaWO4';%updated weights of input to Node 3
O3net_2ndSet = x2*WeightsO3;%summation of Node 3 for 2nd input O3_2ndSet=sigmf(O3net_2ndSet,[1 0]); O4net_2ndSet = x2*WeightsO4; O4_2ndSet=sigmf(O4net_2ndSet,[1 0]); O5_2ndSet = -1; Hidden_Layer_Outputs = [O3_2ndSet O4_2ndSet O5_2ndSet]; O6net_2ndSet = Hidden_Layer_Outputs*Who; O6_2ndSet = sigmf(O6net_2ndSet,[1 0]); E2 = ((t2-O6_2ndSet)^2)/2+E1 Delta6 = O6_2ndSet*(1-O6_2ndSet)*(t2-O6_2ndSet); DeltaW = neta*Delta6*[O3_2ndSet O4_2ndSet O5_2ndSet];%Weight difference input to hidden layer Delta3 = O3_2ndSet*(1-O3_2ndSet)*Who(1,1)*Delta6;%Hidden Layer Weight difference update Delta4 = O4_2ndSet*(1-O4_2ndSet)*Who(2,1)*Delta6; DeltaWO3 = neta*Delta3*[x2(1,1) x2(1,2) x2(1,3)]; DeltaWO4 = neta*Delta4*[x2(1,1) x2(1,2) x2(1,3)]; Who = Who + DeltaW'; WeightsO3 = WeightsO3 + DeltaWO3';%updated weights of input to Node 3 WeightsO4 = WeightsO4 + DeltaWO4';%updated weights of input to Node 3
O3net_3rdSet = x3*WeightsO3;%summation of Node 3 for 2nd input O3_3rdSet=sigmf(O3net_3rdSet,[1 0]); O4net_3rdSet = x3*WeightsO4; O4_3rdSet=sigmf(O4net_3rdSet,[1 0]); O5_3rdSet = -1; Hidden_Layer_Outputs = [O3_3rdSet O4_3rdSet O5_3rdSet]; O6net_3rdSet = Hidden_Layer_Outputs*Who; O6_3rdSet = sigmf(O6net_3rdSet,[1 0]); E3 = ((t3-O6_3rdSet)^2)/2+E2 Delta6 = O6_3rdSet*(1-O6_3rdSet)*(t3-O6_3rdSet); DeltaW = neta*Delta6*[O3_3rdSet O4_3rdSet O5_2ndSet];%Weight difference input to hidden layer Delta3 = O3_3rdSet*(1-O3_3rdSet)*Who(1,1)*Delta6;%Hidden Layer Weight difference update Delta4 = O4_3rdSet*(1-O4_3rdSet)*Who(2,1)*Delta6; DeltaWO3 = neta*Delta3*[x3(1,1) x3(1,2) x3(1,3)]; DeltaWO4 = neta*Delta4*[x3(1,1) x3(1,2) x3(1,3)]; Who = Who + DeltaW'; WeightsO3 = WeightsO3 + DeltaWO3';%updated weights of input to Node 3 WeightsO4 = WeightsO4 + DeltaWO4';%updated weights of input to Node 3
if E < 0.01 break else continue end end
1 Comment
Image Analyst
on 18 May 2018
Edited: Image Analyst
on 18 May 2018
"how do i update the value" -- WHAT value?
"until the error reaches a threshold value" What variable is the error? Is it E, E1, E2, or E3 or some other value?
Get rid of this line:
E(Iter) = E;
"I want to add E3 to E1 at the start of each iteration." So do this right after the for line:
E1 = E1 + E3;
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