# Normalization time

First, as a newer user I want to complement the nice design and gui you have developed for rapidminer.

I used the normalization operator, using the z-transformation on a data set consisting of 1700 examples and 5000 features (sparse formatted ). The attributes are all integers, stored in the sparse-float-array. The normalization works fine but took a very long time ~ around 20 minutes; the next stage applied learning of an svm which only took a few minutes.

Is there any way to speed up the normalization? I want to apply it to larger data sets in the near future: ~50,000 examples

Thanks,

Bill

I used the normalization operator, using the z-transformation on a data set consisting of 1700 examples and 5000 features (sparse formatted ). The attributes are all integers, stored in the sparse-float-array. The normalization works fine but took a very long time ~ around 20 minutes; the next stage applied learning of an svm which only took a few minutes.

Is there any way to speed up the normalization? I want to apply it to larger data sets in the near future: ~50,000 examples

Thanks,

Bill

0

## Answers

849MavenIt's about the sparse format, the following takes 8 seconds for me ...