Re: [TMVA-users] Fwd: BDT output is dependent on th ROOT version - 2nd file attached

[Helge V. <Hel...@ce...>]

Hi Helena,

well, I guess we have to appologize that the TMVA version numbers
don't really get updated the way they should
(now that TMVA is firmly within ROOT, we should actually get rid of
the TMVA version number and JUST have the
ROOT release number)

.. that said, there are unfortunately difference between the TMVA
4.2.0 in ROOT 5.34.14 and the one in root 6.02..
and it's not easy to say 'which'. By comparing the files however I can
to tell me that the only difference that is
an correction of the treatment of 'interger valued' input variables ..
do you have some of those in your data set?

Otherwise, could you perhaps compare the 'start' of the weight files,
which tell you about the used training parameters..
(although I didn't see any change of default parameters.. maybe it
shows something of interest?)

Cheers,

helge


On 12 September 2016 at 18:23, Helena Santos <he...@li...> wrote:
>
>
> -------- Original Message --------
> Subject: BDT output is dependent on th ROOT version
> Date: 2016-09-12 17:20
> From: Helena Santos <he...@li...>
> To: tmv...@li...
> Reply-To: he...@li...
>
> Dear experts,
>
> I get very different BDT outputs whether I use ROOT 5 or 6.
> Same TMVA version: 4.2.0
> Same data, same Signal and Background samples, same input variables.
> Different ROOT versions (6.02.12 vs 5.34.14), very different BDT outputs.
> Is this a known issue?
>
> The size of the files + the content of this message is 45 Kbytes, overcoming
> the limit of 40 Kbytes allowed, so I attach 1 file in this e-mail; the 2nd
> file follows in other e-mail.
>
> Thank you!
>
> Best regards,
> Helena
>
> --
>  Helena Santos
>  LIP, www.lip.pt
>  Av. Elias Garcia 14, 1, 1000-149 Lisboa, Portugal
>  Phone:  +351-217995019; skype: hsantos84
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