"There's several reasons
1. You've intervened in the process. For example when you build a model for a retention campaign you've selected the customers most likely to leave and made them an offer to stay. Therefor you've created…"
AnalyticBridge
Data Intelligence, Business Analytics
Jaap Vink's Groups
-
European Chapter
312 members
-
Analytic, Data Science a…
664 members
-
Marketing Analytics
45 members
-
Text Mining
151 members
-
Data Mining
402 members
Jaap Vink's Page
Latest Activity
Jaap Vink replied to DataLLigence's discussion Test for Difference in Proportions - T Test? Proc GLM?
Jaap Vink replied to DataLLigence's discussion Test for Difference in Proportions - T Test? Proc GLM?
"I agree with both points. Especially with your remarks above about 'millions of cases' in mind. But even in that case it might make sense to use 'statistical techniques' like modelling on different samples because the response to…"
Jaap Vink replied to DataLLigence's discussion Test for Difference in Proportions - T Test? Proc GLM?
"The difference in response you mention (1.2 vs 0.9) could be a fluke of random events and you'd be gambling you're company's money and in stead of . Statistics will give you more confidence in making your decision. If you have to…"
Jaap Vink replied to Amy's discussion Statistical evidence of global warming ??
"See for a discussions and…"
Jaap Vink replied to Dr. Jamie Pleasant's discussion Difference in Marketing Analytics and Predictive analytics in the group Marketing Analytics
"Predictive Analytics is used in a wider range of applications besides marketing. The key to PA is the cross over from different business processes f.e. using credit & fraud models in marketing applicatons as well. If you look at the original…"
Jaap Vink replied to YZ Shi's discussion how to open oracle generated files??
"Phi,
Mostly files like this are handled in a client-server architecture. There's a white paper with recommendations for the server software "PASW Statistics Base Server: New hardware recommendations"…"
Jaap Vink replied to YZ Shi's discussion how to open oracle generated files??
"Phi,
The speed with which SPSS opens the text data depends on the speed of your hard drive end the i/o speed of your computer. Default SPSS will cache the data that you read. You can switch that off by unchecking "Cache data locally" when…"
Jaap Vink replied to Vincent Granville's discussion R / Splus / SPSS Clementine / JMP / Salford Systems memory limitations
"PASW Modeler (formerly known as SPSS Clementine) does not store data in RAM (except for the data needed at any step in an algorithm). I'm not dure about the other products. PASW Modeler uses SQL optimization to have maximum benefits from the…"
Profile Information
- Field of Expertise:
- Data Mining, Finance, Marketing Databases, Web Analytics, Statistical Consulting
- Years of Experience in Analytical Role:
- 24
- Professional Status:
- Other
- Your Company:
- SPSS, an IBM company
Comment Wall (1 comment)
- At 6:02pm on May 5, 2009,
Theodore Omtzigt said… - Jaap:
Leuk om een Nederlander op dit BB te vinden. Wat voor kantoor heeft SPSS in Nederland?
Theo
Top Content
Follow us
Big Data Jobs
© 2013 AnalyticBridge.com is a subsidiary and dedicated channel of Data Science Central LLC
