| Re: How to calculate selectivity score? [message #214 is a reply to message #212] |
Sat, 31 December 2016 17:24   |
thomas
Messages: 655
Registered: June 2014
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Senior Member |
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Hi Jitender,
I tried with some values and even empty cells, but always got numerical scores. There seems to be an issue, however, with logarithmical columns. The Gini logic should not be applied to logarithms, because the concept is 0-based. Currently, if a column is defined to be logarithmically treated, then then the Gini calculation uses the logarithms, which it shouldn't. I will solve that!
To solve your problem you may send me a data file and tell me which columns you use to generate the Gini score.
Regards, Thomas
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