您好,很高興為您解答。
a(1)=0;for?i=2:220
a(i)=0.6*a(i-1)+randn;end
train_t?=?1:200;
train?=?a(train_t);
train_t?=?train_t';
train?=?train';
test_t?=?1:203;
test=a(test_t);
test_t?=?test_t';
test?=?test';
[bestmse,bestc,bestg]?=?SVMcgForRegress(train,train_t,-3,11,-7,1,3,0.5,0.5,0.1);
cmd?=?['-c?',num2str(bestc),'?-g?',num2str(bestg),'?-p?0.01?-s?3'];
model?=?svmtrain(train,train_t,cmd);
[trainpre,trainmse]?=?svmpredict(train,train_t,model);
figure;
hold?on;
plot(train);
plot(trainpre,'r');
title('原來的訓練數據的擬合1-200');
legend('原來的訓練數據','訓練數據預測擬合數據');
hold?off
[testpre,testmse]?=?svmpredict(test,test_t,model);
figure;
hold?on;
plot(test);
plot(testpre,'r');
title('測試數據的預測1-203');
legend('測試數據','測試數據預測擬合數據');
hold?off
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~ O(∩_∩)O~