How can I use the MovieLens Dataset in matlab

3 次查看（过去 30 天）
fadams18
fadams18 2020-11-3
I want to use the MovieLens dataset for my NMF algorithm for matrix completion.
I have a function which i use to sample data into observed and index of the observed entries.
The problem is, the dataset i download looks weird, it has files like, u.data, u.item, u.ratings. How can i preprocess this to have a single Matrix in oder to use my function below
function [Idx, Omega] = subsampling(data, obs)
if(nargin < 1 || nargin > 2)
error('data must be defined');
end
if(nargin == 1)
obs = 0.5; % 50% of observed values (default)
end
nae = numel(double(data));
rp = randperm(nae)';
k = floor(obs*nae);
Idx = rp(1:k);
Omega = zeros(size(data));
Omega(Idx) = 1;
end

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Statistics and Machine Learning Toolbox 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by