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Re: Broken Lift Chart and Empty Classification Matrix in Data Mining

Posted by Dejan Sarka on 09/05/07 15:51

Hi!

Do please check my answer to your previous post (Data Mining Training gives
No Results). You have the same problem - the content of your attributes.
This time, the wizard declared couple of attributes as continuous, and what
you got is a Regression Tree.

--
Dejan Sarka
http://blogs.solidq.com/EN/dsarka/


"ist" <saygin@gmail.com> wrote in message
news:1188988693.231953.209180@y42g2000hsy.googlegroups.com...
> Hi,
> I am studying data mining features of SSAS and for a workshop I've
> created 2 views derived from vTargetMail view of AdventureWorksDW.
> Train data consists every record except those in Pacific, and test
> view consists only records from Pacific area.
>
> 1. I've created a mining structure based on Decision Tree and selected
> BikeBuyer as predictable column.
> 2. According to input column suggestions, I've selected Age,
> Eng.Education, NumberCarsOwned, YearlyIncome, CommuteDistance,
> NumberChildsatHome and TotalChildren as input columns,
> 3. I've modified no other setting, and deployed project.
>
> I can get training results in decision tree browser and dependency
> network (and both seem to give rather logical results) however, when I
> try to browse lift chart or classification matrix I get an empty
> class.matr. and a lift chart of a single 45 degree line.
>
> Am I missing a step, or must I do some fine-tuning on (what)
> parameters?
>
>
> Thanks...
>

 

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