06-17-2015 07:46 PM
My code is just:
proc logistic data=freq, Plots(Label Maxpoints=None)=all descending;
model tag= video1-video30 three1-three30 old1-old30 yong1-yong30 get1-get30/INFLUENCE;
My laptop has 8 GB memory 256SSD.
But still insufficient memory. How to solve this problem???
My file contains 120000 observations , 150 predictor variables.
06-18-2015 03:37 AM
What is your SAS environment?
- SAS UE?
- local SAS installed?
- remote SAS with Enterprise Guide or SAS Studio?
06-18-2015 11:09 AM
Logistic on that many predictor variables not only causes memory problems, but it also would cause interpretation problems if you were able to actually run the model — in the sense that any resulting model would be extremely difficult to use or interpret because of the correlation between the predictors.
An alternative is to use PROC PLS, which has the advantage of using an algorithm that is not as susceptible to memory issues as is PROC LOGISTIC, but it also provides more interpretable models in the case of correlation between the predictors. Win-win!