Give custom weights to my ExampleSet

EnzoSalvi

Hi. I am trying to run a decision tree algorithm on my dataset, which is highly "inaccurate" and "weak".
To solve this problem, I want to assign custom weights to my features but I don't know how to achieve that.
I found the "Weight by user specification" operator, which gives "weights" as output. What operator should get the weights object as input? How can I tell to my process that these weights are related to the ExampleSet?
This is my current situation:

varunm1

Hello @EnzoSalvi

Are these weights used to select attributes? If so, you can use "Select by weights operator.

EnzoSalvi

Thank you, seems I'm getting the right way. Just another question, is there a way to firstly assign weights "automatically" (ex: by correlation, information gained, deviation etc.) and then apply my custom weights? Thank you in advance.

varunm1

Yes, you can, search the operator's tab with "weight" as a keyword, you have many ways there. Here is the image taht shows some available operators.



Hope this helps.