knn分类10折实现及排序

Question

我有 8 个来自 mat 文件的特征每个功能分为 4 部分 (X_train , Y_train , X_test,Y_test) 10次随机获取此参数现在我应该根据 KNN 对这个特征进行分类我的代码在这里

    kk=7;
            bb=1;
         mdl1= ClassificationKNN.fit([X1_train{bb};X2_train{bb};X3_train{bb};X4_train{bb};X5_train{bb};X6_train{bb};X7_train{bb};X8_train{bb};X9_train{bb};X10_train{bb};X11_train{bb};X12_train{bb}],[Y1_train{bb};Y2_train{bb};Y3_train{bb};Y4_train{bb};Y5_train{bb};Y6_train{bb};Y7_train{bb};Y8_train{bb};Y9_train{bb};Y10_train{bb};Y11_train{bb};Y12_train{bb}],'NumNeighbors',kk);
.
.
.
bb=10;
            mdl10= ClassificationKNN.fit([X1_train{bb};X2_train{bb};X3_train{bb};X4_train{bb};X5_train{bb};X6_train{bb};X7_train{bb};X8_train{bb};X9_train{bb};X10_train{bb};X11_train{bb};X12_train{bb}],[Y1_train{bb};Y2_train{bb};Y3_train{bb};Y4_train{bb};Y5_train{bb};Y6_train{bb};Y7_train{bb};Y8_train{bb};Y9_train{bb};Y10_train{bb};Y11_train{bb};Y12_train{bb}],'NumNeighbors',kk);

如您所见，此函数重复 10 次以评估 10 mdl 在下面我写这段代码来简化项目

for j=1:10
    for h=1:12
mdl{j}{h}=ClassificationKNN.fit([X_train{j}{h}],[Y_train{j}{h}]);
    end
end

此代码在没有 (mdl{j}{h}) 的情况下工作正常，但如果使用这句话，我会收到此错误消息（（单元格内容分配给非单元格数组对象））任何人都知道我该怎么做才能解决这个问题谢谢

Answer 1

首先你应该定义mdl变量大小

mdll= cell(10, 8);

然后形成这个 for 循环

for j=1:10
     mdll{j}= ClassificationKNN.fit([X_train{j}{1};X_train{j}{2};X_train{j}{3};X_train{j}{4};X_train{j}{5};X_train{j}{6};X_train{j}{7};X_train{j}{8};X_train{j}{9};X_train{j}{10};X_train{j}{11};X_train{j}{12}],[Y_train{j}{1};Y_train{j}{2};Y_train{j}{3};Y_train{j}{4};Y_train{j}{5};Y_train{j}{6};Y_train{j}{7};Y_train{j}{8};Y_train{j}{9};Y_train{j}{10};Y_train{j}{11};Y_train{j}{12}],'NumNeighbors',kk);
end

我检查过它并且工作正常

knn分类10折实现及排序

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