Weka Tutorial 22 Setting Class Attribute (Data Preprocessing) Video Lecture

going on dice I'm back after a long
period of time with a very short
tutorial on wake up because I was asked
a question from one of the Weka users
that if you have a data set or our file
and if you do not have your class
attribute or class feature at the very
end of the our file by using the
Explorer how can you define that
particular feature as a class feature
and take that to the very end of your
feature set so in order to do that today
I'm going to show you this example ok so
in this example you can see that I have
36 features and my 35th feature is my
class attribute but that's not actually
sitting at the very bottom of my
attribute list here on Weka Explorer so
you have to have your class feature
sitting at the very end of your feature
list because that's important if you
remember that when i use the java api at
that time one of the very first thing i
needed to do is to set the class feature
because if you do not have any class
feature set at that time if you want to
do a classification task your
classification algorithm will not
understand actually what's your class
feature or class attribute so if you
have something like this if you have you
if you if you are facing this problem
that you have numbers of features but
your class attribute is not set at the
very end of this feature list what can
you do is you can go or you can go to
edit and here I know that my class
feature is at the very end the last
second last feature so I click on that
particle
our column here and I'm choosing
attribute as class so when I am done I
can click on the ok button here and you
can now see that your class feature is
now set to the thirty-sixth feature that
means it's the last feature of your
feature list so in this way you can you
can check your class feature back to the
end of your feature list I hope that
helps thank you very much