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how to fixed specific results for times of implementation

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muhammad ismat
muhammad ismat 2016-3-4
关闭： MATLAB Answer Bot 2021-8-20
Accuracy=off(data,z)
for i=1:100
n = size(data,1);
data_rand = data(randperm(n),:);
m = ceil(n/20);
k = 1:m:n-m;
test = data_rand(k:k+m-1,:);
train = [data_rand(1:k-1,:); data_rand(k+m:end,:)];
here code for calculate auc
end
accuracy=mean(auc)
the previous code every time change the values of test and train variables, so the value of auc is changed every time.
say the final result is
accuracy=0.7654 and in another time
accuracy=0.6543 and
accuracy=0.4657
but i want to fixed the specific result say 0.6543 i.e if i run previous code more times will give the same results (0.6543)

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回答（1 个）

MHN
MHN 2016-3-4
编辑：MHN 2016-3-4
Use
rng(1,'twister')
at top of your code. It controls random number generation functions and you will always see the same result as long as you do not change the seed (e.g. 1) and generator method (e.g. twister).

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