pharmine

Scale the training set

1. Put ArffLoader component (DataSources) to layout area and configure it to load a training set from a file.
2. Put ClassAssigner component (Filters) to layout area and connect the dataSet connection from the ArffLoader component to it.
• Configure it by setting the classIndex to the class column.
3. Put Normalize component (Filters) layout area and connect the dataSet connection from the ClassAssigner component to it.
4. Run.

It is easy to use KnowledgeFlow to scale descriptors in the training set. However, it seems that there is no option to save the parameters used to scale the descriptors in the training set and then apply them on a testing set. This would make it difficult to assess the performance of a model on an independent validation set.

This entry was posted by Yap Chun Wei on Saturday, April 12th, 2008 at 9:02 pm and is filed under Data mining, Review. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.