Calculating the Leverage measure (Association Rules)

KNIME Analytics Platform
#1

Hi,

I wish to calculate the LEVERAGE measure after the Association Rule Learner (Borgelt) Node.

This could be done applying the following formula in the Math Formula Node:

$RelativeItemSetSupport%$/100 -

( $AbsoluteBodySetSupport$/1001 * $AbsoluteHeadItemSupport$/1001)

The only problem is that I have to code “1001” as the total number of transaction.

Could it (easily?) taken from a previous node (in my example, the Cell Splitter)? 

Thanks!

Alfredo

 

 

#2

Hi, aren't you looking for the Extract table dimension node ?

 

Fabien

 

 

#3

Yes, I was looking just for that node! Many thanks!

Alfredo

#4