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# correlation

hi all,

I m working on a classification problem and I would like to know, any correlation between rows.

the application here is , classification of fault status of machine.

if I consider rows with Label1 - representing fault free state of the machine, and label 2- representing faulty state of the machine, and if these rows are correlated, my classification algorithm like kNN is not performing in classifying them.

so, I would like to find correlation between them and determine the value - to study the reason behind the non performance of selected algorithm.

thanks

thiru

I m working on a classification problem and I would like to know, any correlation between rows.

the application here is , classification of fault status of machine.

if I consider rows with Label1 - representing fault free state of the machine, and label 2- representing faulty state of the machine, and if these rows are correlated, my classification algorithm like kNN is not performing in classifying them.

so, I would like to find correlation between them and determine the value - to study the reason behind the non performance of selected algorithm.

thanks

thiru

0

## Answers

297RM Research

Also AutoModel is already taking care of correlations and might give you some hints where to look at.Correlation Matrix, to give you an overview of the correlation between all attributesWeight by Correlation, to get the correlation between attributes and a labelAutoCorrelation, if you think there might be a time dependent component in your dataDavid

100Guruthanks for your reply. However my query was with respect to rows.

To explain further, how to differentiate the values of rows of faulty state vs rows of fault free state.

I suspect one of my cases, the algorithm is not working

because of the correlation between attribute values with respect to class 1 and

the same attribute values but with respect to class 2 . Is there any way to calculate these.

regds

thiru

955Unicorncorrelation the way we understand it is a two-dimensional concept: attribute (column) A and Attribute (column) B are said to be correlated if the values of A and B in the same rows are correlated (if A is large, B is large).

It would be possible to flip the axis and calculate the correlation that way but I'm not sure if you mean this. If you do, select the two examples (rows) e. g. with Filter Examples or Filter Example Range and use Transpose to turn the rows into columns.

Regards,

Balázs