topic Online Modelling, Please Help..Thanks in SAS Data Science

Online Modelling, Please Help..Thanks

Kanyange — Fri, 01 Nov 2013 12:11:13 GMT

Hi All,

I would like to model response over time (in this case Order_Flag=1). For example, I have some customers (below)), who viewed an offer on line different dates, and they might click and order or not. What's the approach here? I could use Logistic Regression, but I guess it's not recommended for repeated measures like the data below.

Also if I want to build a logistic regression and take the max(view_page_date), I might loose some responses, for example for the customer no 001000023769, his max date is on 23Oct2013 but he has responded on 28Jul2013. Coud you please recommend the best approach to model responses in this case?

Many Thanks

customer	view_page_date	message	Click_Flag	Order_Flag	Var1	Var2	Var3	Var4
001000023769	04Feb2013	A	0	0
001000023769	21Feb2013	A	0	0
001000023769	07Apr2013	B	0	0
001000023769	28Jul2013	A	1	1
001000023769	23Oct2013	A	0	0
001000048157	03Jun2013	A	0	0
001000048157	04Jun2013	A	1	0
001000048157	12Jun2013	A	1	1
001000048157	07Jul2013	A	0	0
001000048157	08Aug2013	A	0	0
001000048157	13Aug2013	C	0	0
001000048157	06Oct2013	A	0	0
001000048157	12Oct2013	C	0	0
001000056209	02Jan2013	D	0	0
001000056209	11Feb2013	A	1	0
001000056209	12Feb2013	D	1	1

Re: Online Modelling, Please Help..Thanks

lryan — Tue, 05 Nov 2013 15:15:11 GMT

Hello and thanks for your question. I consulted an expert on your recurrent event situation. This is an extension of survival analysis. In this case it appears that the variable MESSAGE is a time-dependent covariate. Your situation would require some data preparation.

If the response is simply YES or NO for an order being placed, not a count of orders, then I think you could do this using the Survival node in Enterprise Miner. However, it would require that you input a fully expanded data set. The documentation for Enterprise Miner describes how to prepare your data in this manner. Repeated measures analysis would not be required in this case due to the assumption of independent censoring.

A resource to learn more about survival data mining in general, in addition to the Enterprise Miner documentation, is a video on YouTube: Introduction to Survival Data Mining - YouTube

Re: Online Modelling, Please Help..Thanks

Kanyange — Tue, 05 Nov 2013 22:38:59 GMT

Many Thanks Laura, that's really helpful..