I keep getting the error: Error in Assignment7_1 (line 11) hyp2 = minimize(hyp, @gp, -100, @infGaussLik, meanfunc, covfunc, likfunc, x, y); when I run a code.

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Joseph Ikogho 2021-11-24

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回答： Yongjian Feng 2021-11-24

Assignment 7.1.jpg

%GP example
meanfunc = [];                             % empty: don't use a mean function
covfunc = {@covSum,{@covLIN,@covConst}};   % Linear covariance function
likfunc = @likGauss;                       % Gaussian likelihood
hyp = struct('mean', [],'cov', 0, 'lik', -1);
N=50;
x=rand(N,1);
y=0.5*x+0.5+0.1*randn(size(x));
hyp2 = minimize(hyp, @gp, -100, @infGaussLik, meanfunc, covfunc, likfunc, x, y);
Check for incorrect argument data type or missing argument in call to function 'minimize'.
xs=(0:0.1:1)';
[mu, s2] = gp(hyp2, @infGaussLik, meanfunc, covfunc, likfunc, x, y, xs);

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Joseph Ikogho 2021-11-24

Please any help with the solution to this error will be appreciated. Thanks

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Answer 1

Yongjian Feng 2021-11-24

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The last line calling minimize, which function do you want to call? Are you calling one of the built-in functions or a custom function you wrote? There seems like confusion there.