topic Oracle cum_dist() function in Qlikview challenge in QlikView

Oracle cum_dist() function in Qlikview challenge

marcel_olmo — Thu, 13 Nov 2014 15:38:25 GMT

Hi guys, in Oracle is quite easy to do a RFM Analysis using cum_dist() function as you can see in this example :

Deep Data Mining Blog: Recency, Frequency, Monetary (RFM) Analysis: Part 2

But I've found no way to replicate this example in Qlikview.

If I have the following table :

USER_ID	CAT	STATE_ID	CAMPAIGN_DATE	CAMPAIGN_ID	RESPONSE
1001	A	MA	01-MAY-12	A	N
1001	A	MA	08-MAY-12	A	N
1001	A	MA	15-MAY-12	A	Y
1001	A	MA	22-MAY-12	A	N
1001	A	MA	29-may-12	A	N
1001	A	MA	06-JUN-12	A	N
1001	B	CT	06-JUN-12	A	N
1002	B	CT	01-may-12	A	N
1002	B	CT	08-may-12	A	N
1002	B	CT	15-may-12	A	Y
1002	B	CT	22-MAY-12	A	N
1002	B	CT	29-may-12	A	Y

How could I get the following result? :

USER_ID	RECENCY_DAYS	RECENCY_QUINTILE
1001	151	3
1002	30	5
1003	72	2

Many thanks in advance!

Best regards, Marcel.

Re: Oracle cum_dist() function in Qlikview challenge

Michael_Tarallo — Thu, 13 Nov 2014 21:25:17 GMT

Hi Marcel,

I got a set of eyes on this, expect a response shortly.

Regards,

Mike Tarallo

Qlik

Re: Oracle cum_dist() function in Qlikview challenge

Jason_Michaelides — Thu, 13 Nov 2014 21:36:13 GMT

Hi Marcel,

Got to say I can't see how the output result in your example can be derived from the input! I might be being stupid but where did USER_ID = 1003 come from!? Also, Max(CAMPAIGN_DATE) WHERE RESPONSE = Y for 1001 and 1002 are only a few days apart so how can the RECENCY_DAYS be so far apart!?

Anyway - I think this can be done using QlikView's Rank() function. See the attached example.

(I have done the grouping in the script but you could use Aggr() to do it dynamically)

Hope this gets you on the right path,

Jason

Re: Oracle cum_dist() function in Qlikview challenge

marcel_olmo — Thu, 13 Nov 2014 22:07:58 GMT

Thanks Jason for the approach, the point is to "score" in equal quintiles a expression (in this case is recency, frequency and sales), the RFM Analysis, and it has to be dynamic.

Here you have an example of sales by customers, and my desired score :

Customer	Sales €	Score
	562 €
c1	72 €	5
c2	71 €	5
c3	55 €	5
c4	36 €	4
c5	36 €	4
c6	36 €	4
c7	36 €	3
c8	36 €	3
c9	36 €	3
c10	35 €	2
c11	35 €	2
c12	20 €	2
c13	20 €	1
c14	19 €	1
c15	19 €	1

I'm trying to get that score using rank(), fractile() and aggr() with no success by now.

Regards, Marcel.

Re: Re: Oracle cum_dist() function in Qlikview challenge

Jason_Michaelides — Thu, 13 Nov 2014 22:44:42 GMT

Is this not it? Again - I'm not sure how you got your result exactly but my method gets close...

I'm not familiar with RFM Analysis but looked it up quickly. Your data below is one sale per customer so frequency is out and there is no date field so recency can't be worked out either can it?

Re: Oracle cum_dist() function in Qlikview challenge

marcel_olmo — Thu, 13 Nov 2014 22:59:21 GMT

Thanks Jason! It's a nice approach, now I have to take a look at this, and compare it with another developing RFM tools in excel. I'm afraid this is not the final answer. As I was seeing with another tools, in Oracle they solve it with cum_dist() function, and in excel, they solve it with percentile.inc() function, that's why I'm trying to get a perfect match in Qlikview.

In addition, you can see this is not the final solution when you select some customers, the result is not changing dinamically.

You deserve at least level 10 in the forum, thanks a lot for your help!

Regards, Marcel.

Re: Oracle cum_dist() function in Qlikview challenge

Jason_Michaelides — Thu, 13 Nov 2014 23:16:53 GMT

There'll be a way. I'll have another look over the weekend or maybe someone else will have a solution for you.

Re: Oracle cum_dist() function in Qlikview challenge

hic — Fri, 14 Nov 2014 08:54:39 GMT

This is a two step calculation, and fairly straightforward in QlikView:

Calculate the most recent response and the number of days ago this happened (Recency). In principle, this is a simple aggregation: "Today() - Max(If(Response='Y',CampaignDate)) as Recency"
Rank the users and use the rank to calculate the quintile: "Ceil(5*Rank(Recency,3)/Count(Distinct Total UserID))"

I would do the first step in the script, and the second in a chart.

HIC