ex1 - programming

ex1 - programming

Tom (guest) 04 Nov 2014 08:42

Hi Regev,

I just want to make sure that I understand the glass data set

The points are composed with 9 values: RI, Na, Mg, Al, Si, K, Ca, Ba, Fe - Those values are in columns 2-10 in the matrix
The labels are numbers between 1-7 - column 11 in the matrix

I need to classify, using kNN, each point from the test to a one label between 1-7

Am I correct?

Thanks,
Tom

Tom (guest) 04 Nov 2014 09:32

One more question re standardization:

Each feature(column) must hold the same mean and std separately or all features must hold the same mean and std?

Regev Schweiger 04 Nov 2014 13:54

You are correct.

Each column must hold the same mean and std. I'm not sure I understand the alternative understanding you mentioned.

tom (guest) 04 Nov 2014 19:38

Thanks, the alternative understanding is not an issue because the std and the mean are for each column :)