forum.hugin.com

User Forums => HUGIN GUI Discussion => Topic started by: alajdekker on October 08, 2009, 18:37:18

Title: Data preprocessing - Analysis button not-active
Post by: alajdekker on October 08, 2009, 18:37:18
Hugin Researcher 7.1:

When using a (EM-learning/Analysis) wizard, I would like to do some data pre-processing (discretization mainly). However, in the Data Preprocessing step I do not seem to have the functionality that the manual would suggest:

1. My Analyse button is inactive, nothing happens when I push it.
2. My drop-down list Preprocess Type, only has "Value Replace" and "External Plug-ins" and not "Exclusion" and "Discretization" as the manual describes?

Any suggestions? Thanks, Andre
Title: Re: Data preprocessing - Analysis button not-active
Post by: Martin on October 09, 2009, 09:39:55
Dear Andre

Discretization is only part of structural learning for establishing the node intervals. Once the intervals for a node has been decided, selecting the correct state for a specific numeric data value is trivial.

This means that discretization is not needed as part of analysis wizard and EM learning - as the numeric data are easily mapped to the propper intervals/states.