how can I separate data randomly ?

7 Ansichten (letzte 30 Tage)
felipe gonzalez
felipe gonzalez am 29 Apr. 2015
Kommentiert: Salih Okur am 5 Aug. 2022
hi
well ... I have a dimension data matrix 445x52, I need to randomly separated into two subsets such data, training daods and test data. which basically have to do is:
dados_treinamento = Data (1: 100, :)
dados_teste = data (101: end, :)
just as the example but in a random way, how can I do this using some function of matlab?
any help is welcome

Antworten (2)

the cyclist
the cyclist am 29 Apr. 2015
There are many ways to accomplish this in MATLAB. Here is one:
% Here are some pretend data
data = rand(445,52);
% Create a randomly ordered vector of indices, then use
% that vector to separate into two groups
idx = randperm(445);
indexToGroup1 = (idx<=100);
indexToGroup2 = (idx>100);
group1 = data(indexToGroup1,:);
group2 = data(indexToGroup2,:);

Neil Caithness
Neil Caithness am 29 Apr. 2015
Make a random permutation vector.
k = randperm(size(data,1));
then
dados_treinamento = data (k(1: 100), :)
dados_teste = data (k(101: end), :)
  2 Kommentare
felipe gonzalez
felipe gonzalez am 29 Apr. 2015
tnkss bro!!!! :)
Salih Okur
Salih Okur am 5 Aug. 2022
it works perfect. thanks alot

Melden Sie sich an, um zu kommentieren.

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by