On Windows and on macOS, the automatic installation process for MLR classifiers will only
work if appropriate versions of the classifier packages are available in binary format. If
they are not available in binary format you will have to install them manually in R so
that the source code version of the package can be compiled (you may have to install
appropriate tools to be able to do that).
regr.mob is part of the R package party, which seems to come in binary versions for the
latest release for both Windows and macOS:
Based on what you say, it sounds like your version of R may simply not be compatible with
the latest versions of these package. If that’s the case, the easiest thing to make things
work smoothly is to upgrade your R installation. You don’t need to use R 3.2.5 for the
MOOC. The latest version of R should work fine. We’ve been using 3.4.0 in our lab, but
later versions of 3.4 will presumably also work.
Another reason for failure is that you are behind a proxy server. In that case, you will
need to tell R to download packages through the proxy. There is some information on this
From: Rado Lipovec
Sent: Saturday, 2 September 2017 5:22 AM
Subject: [Wekalist] MLR clasifiers in Weka 3.9 and rPlugin 1.3.22
I am right now going through Advanced data Mining with Weka course (MOOC)
and I encountered some problems while using MLR classifiers.
My installation: Windows 7.1, Weka 3.9, R 3.2.5, rPlugin1.3.22 and MLR 2.11
RConsole is working properly.
It seems that Weka does not install packages of R learners automatically.
1.I tried to run regs.earth R learner through MLR wrapper using cpu dataset
as requested by exercise 2 in Activity 3.4 of the mentioned Advanced course.
The start button of classification panel remained greyed even after waiting
a lot of time.
2. I tried to install earth package thru R 3.2.5. Normal installation failed
because the installation procedure could not find the appropriate package
for this version of R.
3. I tried to install earth package thru R 3.2.5 using "packages" set of
tools using downloaded earth_3.4.1.zip. Package was installed without
problem and I was able to use the regs.earth learner in Weka.
4. I tried to do same thing with regs.mob but I was unable to find the
package on the internet.
What should I do to if I want Weka to install the R learners packages
automatically when they are selected in MLR wrapper window?
Thanks very much.
Sent from: http://weka.8497.n7.nabble.com/
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