In CH1 PCA example:
Running the code in the example will throw the following error:
No handles with labels found to put in legend.
This can be fixed by adding label=i to the plt.scatter call.

In CH2/DBN.py I have and unresolved reference to:

from mlp import HiddenLayer

Is there a separate python package for this?

I tried,

pip install mlp

but there is no HiddenLayer submodule.

Thanks.

In CH1-1_PCA.py.
Doesn't show the plot.
You have to add plt.show() at the end.

LDA is imported and computed, but data_r2 not discussed in code.

lda = LDA(n_components=2)
data_r2 = lda.fit(data, labels).transform(data)