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Creating weka_results, please wait ...

aliwebaliweb Member Posts: 13 Contributor II
edited November 2018 in Help

Hi everyone

 

Whenever I create a model using Weka operators available through Weka extension, I'm not able to see the model itself. So I connect the model port to the results port and after the process is done, there are to tabs, one is called 'description' and the other is 'weka results' which is supposed to show the actual model. But it says "creating weka_results, please wait ..." and never shows me the model.

 

See the attachment for more information.

 

I'm using RapidMiner 7.0 on OSX El Capitan if that matters.

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Answers

  • sgenzersgenzer 12Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,738  Community Manager

    hmm that's strange.  I use Weka models all the time and they show up.  I would first try upgrading to RM 7.3 and ensuring that your Weka extension is also up-to-date.

     

    Scott

  • Thomas_OttThomas_Ott RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 1,761   Unicorn

    I've noticed that sometimes, depending on how much data the Weka model crunches, showing the model might take a long time. I would definately use v7.2 and enable the Beta mode. We're redoing the data core of RapidMiner to make things more effecient and speedier. 

    sgenzer
  • aliwebaliweb Member Posts: 13 Contributor II

    I upgraded my Rapidminer Studio as well as the Weka extension to 7.3, still the same problem exists.

    Also I'm using Rapidminer 7.0 on a Ubuntu machine, and just installed 7.3 on a windows 10 machine, didn't work on those two either ...

  • aliwebaliweb Member Posts: 13 Contributor II

    Also enabled the Beta mode, didn't help ...

     

    To make sure that the problem is not as a result of a large data, I created a simple process with few data instances and the message still shows up and never goes away.

  • Thomas_OttThomas_Ott RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 1,761   Unicorn

    What kind of Weka alogrithm is it?

  • aliwebaliweb Member Posts: 13 Contributor II

    Initially it was RandomForest, then tried logistic regression and even OneR, still the same.

    I would like to remind that the 'description' tab of the model results work, and this is what happens with the 'weka results' tab.

  • aliwebaliweb Member Posts: 13 Contributor II

    Hi @Thomas_Ott

     

    Any updates on this topic?

     

    Thanks,

    Ali

  • Thomas_OttThomas_Ott RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 1,761   Unicorn

    Did you try running your setup through the Weka program. Maybe it's just how the extension is implements their libriaries. I couldn't say, I rarely use the Weka extension.

  • aliwebaliweb Member Posts: 13 Contributor II

    I ran the setup through Weka program and it outputs the model (though not in a nice graphical way like what RapidMiner does). The thing is that I need to rank model variables by their importance and Weka doesn't have such an option. On the other hand the 'weight by tree importance' operator of RM expects to receive a RM based tree model to operate.

     

    The reason that I'm interested to use Weka RF implementation is the way much better performance results it produces compared to the RM native RF operator on all of my datasets. It also seems to be impossible to mimic the Weka RF behaviour by tweaking RM RF parameteres.

     

    Do you have any suggestions regarding that?

  • Fred12Fred12 Member Posts: 344   Unicorn

    I also experienced the same problem with weka models in trees, they dont show up and the message persists..

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