[datamining] anti-monotone function
- From: Zografoula Vagena <foula@xxxxxxxxxxxx>
- To: datamining@xxxxxxxxxxxxx
- Date: Wed, 3 Mar 2010 21:28:18 +0100 (CET)
Dear all,
some of you seem to have some issues for defining the monotonicity
property in Question1 of assignement 2c.
You should look at slide 13 in the Association Rule Mining (1) pack for
guidance.
A function f as f: A -> B where A is the domain of the function and B its
range.
The general template for monotonicity is as follows:
'
for every x1, x2 IN A
where x1 'is smaller than' x2 then f(x1) 'is smaller' f(x2)
'
to apply this template you need to:
1. define what is the domain of your function A
2. what is the range of your function B
3. what is a suitable 'is smaller than' relationship for the members of A
4. what is a suitable 'is smaller than' relationship for the members of B
Kind Regards,
--foula
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