Dear friends, pls how can I call up the weights and bias of a trained model and write the mathematical expression or equation for it.

% Solve an Input-Output Fitting problem with a Neural Network
% Script generated by Neural Fitting app
% Created 23-Jan-2023 17:53:08
%
% This script assumes these variables are defined:
%
% Input – input data.
% Target – target data.

x = Input;
t = Target;

% Choose a Training Function
% For a list of all training functions type: help nntrain
% ‘trainlm’ is usually fastest.
% ‘trainbr’ takes longer but may be better for challenging problems.
% ‘trainscg’ uses less memory. Suitable in low memory situations.
trainFcn = ‘trainbr’; % Bayesian Regularization backpropagation.

% Create a Fitting Network
hiddenLayerSize = 10;
net = fitnet(hiddenLayerSize,trainFcn);

% Choose Input and Output Pre/Post-Processing Functions
% For a list of all processing functions type: help nnprocess
net.input.processFcns = {‘removeconstantrows’,’mapminmax’};
net.output.processFcns = {‘removeconstantrows’,’mapminmax’};

% Setup Division of Data for Training, Validation, Testing
% For a list of all data division functions type: help nndivision
net.divideFcn = ‘dividerand’; % Divide data randomly
net.divideMode = ‘sample’; % Divide up every sample
net.divideParam.trainRatio = 80/100;
net.divideParam.valRatio = 10/100;
net.divideParam.testRatio = 10/100;

% Choose a Performance Function
% For a list of all performance functions type: help nnperformance
net.performFcn = ‘mse’; % Mean Squared Error

% Choose Plot Functions
% For a list of all plot functions type: help nnplot
net.plotFcns = {‘plotperform’,’plottrainstate’,’ploterrhist’, …
‘plotregression’, ‘plotfit’};

% Train the Network
[net,tr] = train(net,x,t);

% Test the Network
y = net(x);
e = gsubtract(t,y);
performance = perform(net,t,y)

% Recalculate Training, Validation and Test Performance
trainTargets = t .* tr.trainMask{1};
valTargets = t .* tr.valMask{1};
testTargets = t .* tr.testMask{1};
trainPerformance = perform(net,trainTargets,y)
valPerformance = perform(net,valTargets,y)
testPerformance = perform(net,testTargets,y)

% View the Network
view(net)

% Plots
% Uncomment these lines to enable various plots.
%figure, plotperform(tr)
%figure, plottrainstate(tr)
%figure, ploterrhist(e)
%figure, plotregression(t,y)
%figure, plotfit(net,x,t)

% Deployment
% Change the (false) values to (true) to enable the following code blocks.
% See the help for each generation function for more information.
if (false)
% Generate MATLAB function for neural network for application
% deployment in MATLAB scripts or with MATLAB Compiler and Builder
% tools, or simply to examine the calculations your trained neural
% network performs.
genFunction(net,’myNeuralNetworkFunction’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a matrix-only MATLAB function for neural network code
% generation with MATLAB Coder tools.
genFunction(net,’myNeuralNetworkFunction’,’MatrixOnly’,’yes’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a Simulink diagram for simulation or deployment with.
% Simulink Coder tools.
gensim(net);
end
=====================================================================
I have attached the save model, where output (Ra = Y) and inputs X(vc, ap, and f). I want to express the model equation for Ra interms of vc, ap, and f (x1, x2, and x3).% Solve an Input-Output Fitting problem with a Neural Network
% Script generated by Neural Fitting app
% Created 23-Jan-2023 17:53:08
%
% This script assumes these variables are defined:
%
% Input – input data.
% Target – target data.

x = Input;
t = Target;

% Create a Fitting Network
hiddenLayerSize = 10;
net = fitnet(hiddenLayerSize,trainFcn);

% Choose a Performance Function
% For a list of all performance functions type: help nnperformance
net.performFcn = ‘mse’; % Mean Squared Error

% Choose Plot Functions
% For a list of all plot functions type: help nnplot
net.plotFcns = {‘plotperform’,’plottrainstate’,’ploterrhist’, …
‘plotregression’, ‘plotfit’};

% Train the Network
[net,tr] = train(net,x,t);

% Test the Network
y = net(x);
e = gsubtract(t,y);
performance = perform(net,t,y)

% View the Network
view(net)

% Plots
% Uncomment these lines to enable various plots.
%figure, plotperform(tr)
%figure, plottrainstate(tr)
%figure, ploterrhist(e)
%figure, plotregression(t,y)
%figure, plotfit(net,x,t)

% Deployment
% Change the (false) values to (true) to enable the following code blocks.
% See the help for each generation function for more information.
if (false)
% Generate MATLAB function for neural network for application
% deployment in MATLAB scripts or with MATLAB Compiler and Builder
% tools, or simply to examine the calculations your trained neural
% network performs.
genFunction(net,’myNeuralNetworkFunction’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a matrix-only MATLAB function for neural network code
% generation with MATLAB Coder tools.
genFunction(net,’myNeuralNetworkFunction’,’MatrixOnly’,’yes’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a Simulink diagram for simulation or deployment with.
% Simulink Coder tools.
gensim(net);
end
=====================================================================
I have attached the save model, where output (Ra = Y) and inputs X(vc, ap, and f). I want to express the model equation for Ra interms of vc, ap, and f (x1, x2, and x3). % Solve an Input-Output Fitting problem with a Neural Network
% Script generated by Neural Fitting app
% Created 23-Jan-2023 17:53:08
%
% This script assumes these variables are defined:
%
% Input – input data.
% Target – target data.

x = Input;
t = Target;

% Create a Fitting Network
hiddenLayerSize = 10;
net = fitnet(hiddenLayerSize,trainFcn);

% Choose a Performance Function
% For a list of all performance functions type: help nnperformance
net.performFcn = ‘mse’; % Mean Squared Error

% Choose Plot Functions
% For a list of all plot functions type: help nnplot
net.plotFcns = {‘plotperform’,’plottrainstate’,’ploterrhist’, …
‘plotregression’, ‘plotfit’};

% Train the Network
[net,tr] = train(net,x,t);

% Test the Network
y = net(x);
e = gsubtract(t,y);
performance = perform(net,t,y)

% View the Network
view(net)

% Plots
% Uncomment these lines to enable various plots.
%figure, plotperform(tr)
%figure, plottrainstate(tr)
%figure, ploterrhist(e)
%figure, plotregression(t,y)
%figure, plotfit(net,x,t)

% Deployment
% Change the (false) values to (true) to enable the following code blocks.
% See the help for each generation function for more information.
if (false)
% Generate MATLAB function for neural network for application
% deployment in MATLAB scripts or with MATLAB Compiler and Builder
% tools, or simply to examine the calculations your trained neural
% network performs.
genFunction(net,’myNeuralNetworkFunction’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a matrix-only MATLAB function for neural network code
% generation with MATLAB Coder tools.
genFunction(net,’myNeuralNetworkFunction’,’MatrixOnly’,’yes’);
y = myNeuralNetworkFunction(x);
end
if (false)
% Generate a Simulink diagram for simulation or deployment with.
% Simulink Coder tools.
gensim(net);
end
=====================================================================
I have attached the save model, where output (Ra = Y) and inputs X(vc, ap, and f). I want to express the model equation for Ra interms of vc, ap, and f (x1, x2, and x3). bias, weights, model formulation MATLAB Answers — New Questions

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