Best way to split data into random partitions?

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G. Nardi 2019-1-11

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https://ww2.mathworks.cn/matlabcentral/answers/439417-best-way-to-split-data-into-random-partitions

评论： G. Nardi 2019-1-12

采纳的回答： Cris LaPierre

I am new to Matlab and still a student. For an assignment, I am stuck on this part.

Create 5 random partitions of the data, splitting each of the classes into 60% training and 40% testing.

I have two classes, Class One and Class Two.

I was reading this https://www.mathworks.com/matlabcentral/answers/377839-split-training-data-and-testing-data

How would I be able to do this?

classOne and classTwo is 10000x2 double histogram

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Cris LaPierre 2019-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/439417-best-way-to-split-data-into-random-partitions#answer_356089

编辑：Cris LaPierre 2019-1-12

在 MATLAB Online 中打开

I would use the dividerand function in the Deep Learning Toolbox.

For example

[trainInd,valInd,testInd] = dividerand(3000,0.6,0.2,0.2);

Just set the validation percentage to 0 if you don't need it.

Neither do I, but you can use somthing more basic like RandInd = randperm(n), which creates a vector containing a random arrangement of the numbers 1:n. Then you can take the first 60% (or whatever) of RandInd to be TrainInd, etc. and proceed from there.

G. Nardi 2019-1-12