Labfans是一个针对大学生、工程师和科研工作者的技术社区。 论坛首页 | 联系我们(Contact Us)
MATLAB爱好者论坛-LabFans.com
返回   MATLAB爱好者论坛-LabFans.com > 其它 > 资料存档
资料存档 资料存档
 
 
主题工具 显示模式
旧 2019-11-23, 20:41   #1
poster
高级会员
 
注册日期: 2019-11-21
帖子: 3,006
声望力: 66
poster 正向着好的方向发展
默认 Separate matrix of column vectors into training and testing data in MATLAB

I'm currently doing a project in MATLAB using the MNIST data set. I have a training data set of n = 50000, represented by a matrix of 784 x 50000 (50000 column vectors of size 784).

I am trying to separate my training and testing data (70-30, respectively), but the method I am using is a bit wordy and brute force for my liking. Being that this is MATLAB, I'm sure there has got to be a better way. The code I have been using is listed below. I'm brand new to MATLAB so please help! Thanks :)

% MNIST - data loads into trn and trnAns, representing% the input vectors and the desired output vectors, respectivelyload('Data/mnistTrn.mat');mnist_train = zeros(784, 35000);mnist_train_ans = zeros(10, 35000);mnist_test = zeros(784, 15000);mnist_test_ans = zeros(10, 15000);indexes = zeros(1,50000);for i = 1:50000 indexes(i) = i;endindexes(randperm(length(indexes)));for i = 1:50000 if i
poster 当前离线   回复时引用此帖
 

主题工具
显示模式

发帖规则
不可以发表新主题
不可以发表回复
不可以上传附件
不可以编辑自己的帖子

启用 BB 代码
论坛禁用 表情符号
论坛启用 [IMG] 代码
论坛启用 HTML 代码



所有时间均为北京时间。现在的时间是 00:03


Powered by vBulletin
版权所有 ©2000 - 2025,Jelsoft Enterprises Ltd.