Re: XGBoost Installation

You cannot set environment variables, etc., in WEKA's built-in CLI, which
is really quite primitive and only pretends to be a proper OS terminal! You
need to run the command in the macOS terminal. However, as I said, you
should not set R_HOME explicitly unless you have installed R in a
non-standard location. WEKA's RPlugin will find R on the Mac if it is
installed in the standard place.

Cheers,
Eibe

On Sat, Jun 5, 2021 at 1:43 PM Prakash Bhagat <[email protected]>
wrote:

> Yes, I have followed this guide:
> https://riptutorial.com/weka/topic/7916/how-to-use-r-in-weka
> I pasted this in the command line in WEKA: export
> R_HOME=/Library/Frameworks/R.framework/Resources
> java -Xss10M -Xmx4096M -cp .:weka.jar weka.gui.GUIChooser
>
> And this is the error from weka:
>
> Kind regards,
> Prakash
>
>
>
> On 04 Jun,2021, at 13:52, Eibe Frank <[email protected]> wrote:
>
> Are you still running WEKA with R_HOME set to some value? It is normally
> best to let WEKA set the value of R_HOME itself.
>
> If there are any error messages shown in the terminal from which you run
> WEKA, it would be useful to share those.
>
> Cheers,
> Eibe
>
> On Fri, Jun 4, 2021 at 11:43 PM Prakash Bhagat <
> [email protected]> wrote:
>
>> https://github.com/SigDelta/weka-xgboost/releases - This is the link I
>> used to download xgboost.
>> Using this downloaded I installed xgboost as an unofficial package in
>> tools. It then comes under trees however does not run.
>>
>> With the RPlugin the MLR classifier is unavailable to use. I have
>> downloaded a new version of R and within R I also downloaded the MLR
>> package. This still however does not run.
>> I have installed rJava within R as well.
>> <Screenshot 2021-06-04 at 11.51.31.png>
>>
>> On 04 Jun,2021, at 11:07, Eibe Frank <[email protected]> wrote:
>>
>> Which unofficial version do you mean? Both, RPlugin and wekaPython, are
>> official packages, and both enable you to use XGBoost. With the RPlugin,
>> you need to use XGBoost through the MLRClassifier and select XGBoost as the
>> base learner (the first time you select this base learner, it will try to
>> install it in R, which may take a while). Similarly, with wekaPython, you
>> also need to use the corresponding ScikitLearnClassifier in WEKA with
>> XGBoost as the base learner (and you need to have XGBoost installed in your
>> relevant Python environment, which you may need to do manually).
>>
>> The easiest way to use XGBoost in WEKA is probably through the RPlugin
>> because the only manual work you (normally) need to do is to install R.
>>
>> There might be an unofficial WEKA package for XGBoost out there, but it
>> may not be maintained.
>>
>> Cheers,
>> Eibe
>>
>>
>> On Fri, Jun 4, 2021 at 4:49 PM <[email protected]> wrote:
>>
>>> Dear All,
>>>
>>> I have a mac with the latest version of R and python installed. I am
>>> using WEKA for an assignment and need to use XGBoost.
>>> I have tried downloading the unofficial version as a package however
>>> that does not work.
>>> I then tried the R Plugin version downloading RPlugin and pasting this
>>> in the command line in WEKA:
>>> export R_HOME=/Library/Frameworks/R.framework/Resources
>>> java -Xss10M -Xmx4096M -cp .:weka.jar weka.gui.GUIChoose
>>>
>>> This however did not work either and R does not run.
>>>
>>> If anyone has a very specific step-by-step guide to getting XGBoost on
>>> macOS please let me know!
>>>
>>> Kind regards,
>>> PYB
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