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Thursday, 22 March 2012

Operators that deserve to be better known: part III


Of course this is already a well known operator but it has a useful option I discovered the other day. If you set the method to "proportion transformation", the normalization divides each numerical attribute with the sum of all the values for that attribute. This has the effect that the sum of each normalized attribute becomes 1.

This is much easier than using loop operators which would involve having a "loop examples" operator inside "loop attributes" with filtering, calculating sums, generating attributes and perhaps some attribute selection.

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