Hey! Can someone explain me the following syntax:
modelfun=@(b,x)b(1) + b(2)*x(:,1).^b(3)+… b(4)*x(:,2).^b(5); beta0=[-50 500 -1 500 -1]; mdl = fitnlm(ds,modelfun,beta0)
mdl = MPG~ b1 + b2*Horsepower^b3 + b4*Weight^b5
In particular I dont understand: (b,x)- this doesnt take any column of the dataset,right? x(:,1)- does this give me the first column of the dataset? x(:,1)-does this give me the second column of the dataset?
In beta0 I specify then the values of b1, b2 and b4? Or what is it for?
Thanks for your help!
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