How to train data using SOM and map the resukts on data

4 次查看（过去 30 天）
AS
AS 2019-4-12
回答： AS 2019-4-15
Pleases help me. I am stuck in how to train data using SOM and map the results on data. I am using the data file, having dimension 100 by 30. First, I want to apply som to train it and them classify the classes.Please help me to solve this problem. Its very important and urgent also.
  4 个评论
显示 2更早的评论
KSSV
KSSV 2019-4-12
What approach you have used? gui or code? what? Show us code.
AS
AS 2019-4-12
Using Somtoolbox. The data has been classified into 4 classes. But I dont know how to map these classes using som_colorcode on data. So that I will get the classes depth wise. If you have any idea please help me in this

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

KSSV
KSSV 2019-4-12
Hope this demo might help you:
X = rands(2,1000); % some random input
plot(X(1,:),X(2,:),'+r')
net = selforgmap([2 2]); % divide into four groups
net = configure(net,X);
plotsompos(net)
net.trainParam.epochs = 1;
net = train(net,X);
plotsompos(net)
% Groups
Y = vec2ind(net(X)) ;
scatter(X(1,:),X(2,:),30,Y,'filled')
% Testing
x = [0.5;0.3];
y = vec2ind(net(x)) % the give input belongs to this group
  7 个评论
显示 5更早的评论
Adam
Adam 2019-4-15
Why train for 1 epoch only? I would think you'd need a few hundred, especially with coverSteps explicitly set at 100

请先登录，再进行评论。

AS
AS 2019-4-15
It is not working properly. For I have simply calculated best matching unit after training which gives proper classification. And epoch I have used 200

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