[R] blackboost (mboost package) function leads to non-reclaimable memory usage

[R. Michael Weylandt]

On Sun, Nov 4, 2012 at 1:06 PM, nima82 <nima.mehrafshan at gmail.com> wrote:
> Dear all,
>
> I am puzzled by R's memory usage when calling the blackboost function from
> package mboost to estimate a Gradient boosting model on a simulated dataset
> with 20 correlated variables and 100,000 obs. The blackboost object created
> by the function is only 15.3Mb, but R's memory usage increases by about
> 3.9Gb during the estimation of the model and the memory is not released even
> after calling the garbage collection with gc() or saving and reloading the
> workspace to a new R session. I wonder what is causing this behavior and if
> there is a way to free up the extra memory? I appreciate any thoughts since
> I would really like to use this function.
>
> I already posted a similar question on  stackoverflow
> <http://stackoverflow.com/questions/13195733/how-can-i-remove-invisible-objects-form-an-r-workspace-that-are-not-removed-by-g>
> , however haven't gotten any solutions yet.
>

Hi Nima,

Looking briefly over this, it seems that there's possibly a memory
allocation error somewhere in the C routines called by mboost. I'd
suggest you contact the package maintainer directly with a
reproducible example. To get contact info, use the maintainer()
function.

Cheers,
Michael