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Author Topic: Extract coefficients from linear regressions Model  (Read 949 times)
Matthias
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Posts: 13


« on: March 16, 2011, 04:56:39 PM »

Hi all,

I 've to extract the coefficients from a linear regressions Model. I want solve this with a little java script, following this topic
http://rapid-i.com/rapidforum/index.php/topic,2427.0.html
First I want to input the model with
Code:
IOObject ioobject = operator.getInput(IOObject.class);

However I don't know how to transform the IOObject into a LinearRegressionsModel so that I can use the getCoefficients() command.

Would be nice if someone has an idea

Greetings

Matthias
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Sebastian Land
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Posts: 2426


« Reply #1 on: March 18, 2011, 05:22:33 PM »

Hi,
well actually casting would be a good idea. But if you aren't a Java freak, I would recommend using a simple operator for that: The coefficients are returned as weight Vector from the Linear Regression itself. So you can use it or transform it to a data set using Weights to Data. Then you can save it in any format you want. No coding needed at all...

Greetings,
  Sebastian
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Matthias
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Posts: 13


« Reply #2 on: March 21, 2011, 11:32:13 AM »

Hi,

I don't know exactly why I didn't see the Output port for the weight vector all the time, but you are right there is one.

Thanks

Matthias
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