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Dirk Nachbar

Dirk Nachbar's Discussions (17)

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Discussions Replied To (13) Replies Latest Activity
Aditya

"I was talking SAS there, by fastclus I mean k-means clustering."

Dirk Nachbar replied Dec. 9, 2009 to Newbie trying to cluster mixed data type variables in SAS

 9 Dec. 18, 2009
Reply by Aditya
Aditya

"I am not sure what Mon-Wed and Sat-Mon distance is. Start by generating a weekday va…"

Dirk Nachbar replied Dec. 9, 2009 to Newbie trying to cluster mixed data type variables in SAS

 9 Dec. 18, 2009
Reply by Aditya
ANINDO CHAKRABORTY

"if you mean CHAID, SAS cannot do it"

Dirk Nachbar replied Jul. 16, 2009 to Clustering with non numeric data

 21 Jul. 17, 2009
Reply by Ralph Winters
Duccio Schiavon

"so you have a cross-sectional time series model?? you have N-1 time periods and you…"

Dirk Nachbar replied Jul. 16, 2009 to Prediction based on multiple time levels

 2 Jul. 27, 2009
Reply by Duccio Schiavon
Sun

"you can use Granger causality http://en.wikipedia.org/wiki/Granger_causality in time…"

Dirk Nachbar replied Jul. 16, 2009 to Predictive modeling: how to identify cause, consequence, feedback loops or external factor?

 4 Jul. 16, 2009
Reply by Dirk Nachbar
Salman Badr

"1) I would recommend SAS, but it's a bit expensive to acquire 2) definitely be rigor…"

Dirk Nachbar replied Jun. 8, 2009 to Need some advice on starting a career in data analysis

 8 Jun. 9, 2009
Reply by Salman Badr
Tina T

"not sure what a 'criteria variable' is, you can also look at proc varclus you need t…"

Dirk Nachbar replied Mar. 23, 2009 to Potential Customer Sengmentation Project

 11 Mar. 23, 2009
Reply by Dirk Nachbar
Tina T

"there is again no easy answer to this, start by removing those variables which have…"

Dirk Nachbar replied Mar. 23, 2009 to Potential Customer Sengmentation Project

 11 Mar. 23, 2009
Reply by Dirk Nachbar
AJAY OHRI

"I think there is not easy answer to this. for multicollinearity just use proc corr a…"

Dirk Nachbar replied Mar. 23, 2009 to Ways to build a wrong scoring model

 2 Mar. 23, 2009
Reply by Dirk Nachbar
Atul

"Have you considered bootstrapping? http://en.wikipedia.org/wiki/Bootstrapping_(stati…"

Dirk Nachbar replied Jan. 30, 2009 to Logistic regression on large imbalance datasets

 4 Feb. 3, 2009
Reply by Atul
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