matlab - 如何在 plotsommaphits 中查找输入数据的值

Question

我在 MATLAB 或 iris 数据集中使用了 SOM 工具箱。以下示例并使用 plotsomhits 我可以看到 SOM 的神经元网格的每个神经元中有多少数据值。但是，我想知道在给定 SOM 配置的每个神经元中分组的实际数据值。有没有办法做到这一点。这是我使用的示例。

net = selforgmap([8 8]);
view(net)
[net,tr] = train(net,x);
nntraintool
plotsomhits(net,x)

Answer 1

not that hard. plotsomhits just plots "fancily" the results of the simulation of the net.

so if you simulate it and add the "hits" you have the result!

basicaly:

hits=sum(sim(net,x)');

In your net case this was my results, that coincide with the numbers in the plotsomehits

hits= 6     5     0     7    15     7     4     0     8    20     3     3     9     3     0     8     6     3    11     4     5     5     7    10     1

PD: you can learn a lot in this amazing SO answer:

MATLAB: help needed with Self-Organizing Map (SOM) clustering