how to divide the Dataset into xtrain xtest ytrain ytest

Question

uma 2022-4-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1704285-how-to-divide-the-dataset-into-xtrain-xtest-ytrain-ytest

评论： uma 2022-5-2

采纳的回答： uma

i have a dataset 2310x25 table and i want to divide it into xtrain xtest ytain ytest.

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Answer 1

uma 2022-4-28

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https://ww2.mathworks.cn/matlabcentral/answers/1704285-how-to-divide-the-dataset-into-xtrain-xtest-ytrain-ytest#answer_952640

I have attached my two datasets. please help us how we can use it.

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Chunru 2022-4-28

在 MATLAB Online 中打开

load cmc2.mat
t = readtable('cmc1.csv');
Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. The original column headers are saved in the VariableDescriptions property.
Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names.
whos
  Name           Size             Bytes  Class     Attributes

  ans            1x33                66  char                
  cmc1        1473x10            121053  table               
  cmdout         1x33                66  char                
  data        1473x10            117840  double              
  t           1473x10            122471  table               
% head(t)
ns = size(data, 1);     % number of samples
cv = cvpartition(ns, 'KFold', 10);
idxTrain = training(cv, 1);
idxTest = test(cv, 1);
traindata = data(idxTrain, :);
testdata  = data(idxTest,  :);
whos
  Name              Size             Bytes  Class          Attributes

  ans               1x33                66  char                     
  cmc1           1473x10            121053  table                    
  cmdout            1x33                66  char                     
  cv                1x1              11978  cvpartition              
  data           1473x10            117840  double                   
  idxTest        1473x1               1473  logical                  
  idxTrain       1473x1               1473  logical                  
  ns                1x1                  8  double                   
  t              1473x10            122471  table                    
  testdata        147x10             11760  double                   
  traindata      1326x10            106080  double                   

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Answer 2

Chunru 2022-4-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1704285-how-to-divide-the-dataset-into-xtrain-xtest-ytrain-ytest#answer_950255

编辑：Chunru 2022-4-25

在 MATLAB Online 中打开

% doc cvpartition
data = randn(2310, 25);
%cv = cvpartition(2310, 'Holdout', 0.3);
%idxTrain = training(cv);
%idxTest = test(cv);
cv = cvpartition(2310, 'KFold', 10);
idxTrain = training(cv, 1);
idxTest = test(cv, 1);
traindata = data(idxTrain, :);
testdata  = data(idxTest,  :);
whos
  Name              Size             Bytes  Class          Attributes

  cmdout            1x33                66  char                     
  cv                1x1              18674  cvpartition              
  data           2310x25            462000  double                   
  idxTest        2310x1               2310  logical                  
  idxTrain       2310x1               2310  logical                  
  testdata        231x25             46200  double                   
  traindata      2079x25            415800  double                   