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Focal Point    Focal Point Forums  Hop To Forum Categories  Performance Management Framework (PMF)    How to change calculations in aggregation

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bzwoman
Member
posted
We loading measure whith the Ratio aggregation method.

for NUMERATOR - there is CHARGES

for DENOMINATOR - ADJUSTMENT_FACTOR

When aggregated we need CHARGES to be summarized (that's what PMF does),

but FACTOR should be averaged , i.e. aggregation formula should look like:

sum (CHARGE) /avg (FACTOR)

Is it possible to do ?

This message has been edited. Last edited by: Bob Jude Ferrante,
 
Posts: 1 | Registered: November 27, 2006Report This Post
Bob Jude Ferrante
Master
posted Hide Post
The principals of FOCUS apply. The denominator can be done with code, like so:

  
A/D20.4=A + ADJUSTMENT_FACTOR;
B/D20.4 WITH ADJUSTMENT_FACTOR=B+1;
ACTUAL_NUMERATOR/D20.4 WITH ADJUSTMENT_FACTOR=A / B;


The question is why you're doing this average this way. If you wanted you could make the denominator FIXED to the number you determine is the mean average across all your measures, and PMF would apply that as a constant. That might be closer to what you want.

This message has been edited. Last edited by: Bob Jude Ferrante,


Bob Jude Ferrante
Director of Business and Development
WebFOCUS Performance Management
Bob_Ferrante@ibi.com
917-339-5105

I'll take any questions about PMF - business or technical - anytime!

 
Posts: 919 | Registered: March 26, 2003Report This Post
SethW
Silver Member
posted Hide Post
Thanks Bob,

The adjustment factor is unique for each department, business unit etc. It allows for a normalized comparison between departments. So by aggregating Sum (Charge) / Ave (Factor) we are able to compare apples to apples no matter which departments are included in the aggregation.

In thinking through this, the issue is not at load time. The issue occurs during aggregation.

Any assistance would be appreciated.


WF 7.65. Solaris. PMF 5.11 on Oracle 10g
 
Posts: 48 | Location: New York | Registered: March 25, 2009Report This Post
Bob Jude Ferrante
Master
posted Hide Post
We do keep the record count during aggregation so that we can support averaging display on alternate time summaries.

So you can store the adjustment_factor value in the denominator of the measure. During aggregation, perform an IF test in a_compute_rpt_vars.fex looking for the measures where the aggregation has to average only the denominator and branch to a routine where you divide the denominator's value (e.g., because you stored the adjustment_factor in the denominator) and divide it by the record_count member to get the mean (average). That will work just fine.


Bob Jude Ferrante
Director of Business and Development
WebFOCUS Performance Management
Bob_Ferrante@ibi.com
917-339-5105

I'll take any questions about PMF - business or technical - anytime!

 
Posts: 919 | Registered: March 26, 2003Report This Post
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