[scikit-learn] R: scikit-learn Digest, Vol 11, Issue 32
Ludovico Coletta
ludo25_90 at hotmail.com
Mon Feb 27 18:56:59 EST 2017
Dear Gael,
This will probably be the case here, but we would like to exclude the scanner-factor from the possible explanations. We are still lucky that we are not in situation where the number of features >> number of samples.
Best
Ludovico
-------- Messaggio originale --------
Da: scikit-learn-request at python.org
Data: 27/02/17 23:49 (GMT+01:00)
A: scikit-learn at python.org
Oggetto: scikit-learn Digest, Vol 11, Issue 32
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Today's Topics:
1. Re: scikit-learn Digest, Vol 11, Issue 29 (Gael Varoquaux)
2. Re: GSoC 2017 (Joel Nothman)
3. Re: GSoC 2017 (Pradeep Thalasta)
----------------------------------------------------------------------
Message: 1
Date: Mon, 27 Feb 2017 23:19:33 +0100
From: Gael Varoquaux <gael.varoquaux at normalesup.org>
To: Scikit-learn user and developer mailing list
<scikit-learn at python.org>
Subject: Re: [scikit-learn] scikit-learn Digest, Vol 11, Issue 29
Message-ID: <20170227221933.GC2369856 at phare.normalesup.org>
Content-Type: text/plain; charset=iso-8859-1
On Mon, Feb 27, 2017 at 10:13:04PM +0000, Ludovico Coletta wrote:
> The data is stored in a numpy array (shape: 68, 24). We are using scikit 18.1
> I saw that I wrote something wrong in previous email. Your solution is indeed
> correct if we leave Scikit decide how to manage the inner loop. This is what we
> did at the beginning. By doing so, we noticed that the classifier's perfomance
> decrease (in comparison to a non-optimised classifier).
With 68 samples, it is not that surprising the model-selection with
cross-validation is not able to select a good model. We found the same
problem in brain imaging data [1], and it's an intrinsic problem due to
small sample sizes: cross-validation is just not very accurate in these
settings.
Ga?l
[1] https://arxiv.org/abs/1606.05201
------------------------------
Message: 2
Date: Tue, 28 Feb 2017 09:34:43 +1100
From: Joel Nothman <joel.nothman at gmail.com>
To: Scikit-learn user and developer mailing list
<scikit-learn at python.org>
Subject: Re: [scikit-learn] GSoC 2017
Message-ID:
<CAAkaFLXVGAbBjYE2yA+8egUgRvoYnbOgO9QfYTeG0iF9bWUX+A at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi Pradeep, we would usually only accept candidates who have shown their
proficiency and understanding of our package and processes by making some
contributions prior to this stage. you are certainly welcome to aim for
GSoC 2018 by beginning to develop your familiarity and rapport now. cheers,
Joel
On 28 Feb 2017 7:01 am, "Pradeep Thalasta" <thalasta at usc.edu> wrote:
> Hi,
> I'm new to open source contribution. Can i take part in GSoc as well?
>
>
> On Mon, Feb 27, 2017 at 11:29 AM, Raghav R V <ragvrv at gmail.com> wrote:
>
>> Or simply a public gist and importantly the link mailed here would do I
>> think...
>>
>> On 27 Feb 2017 8:28 p.m., "Raghav R V" <ragvrv at gmail.com> wrote:
>>
>>> They can still edit a wiki page from their fork of scikit learn I think.
>>> So I'd suggest doing that and mailing to this thread, the link to their
>>> proposal...
>>>
>>> On 27 Feb 2017 6:55 p.m., "Nelson Liu" <nfliu at uw.edu> wrote:
>>>
>>>> In past years students made a page on the wiki with their proposal;
>>>> this isn't possible anymore due to GitHub permissions. Perhaps an
>>>> alternative method for getting feedback should be suggested on the
>>>> introduction page?
>>>>
>>>> Nelson Liu
>>>>
>>>> On Mon, Feb 27, 2017 at 2:58 AM, Gael Varoquaux <
>>>> gael.varoquaux at normalesup.org> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> Students have been inquiring about the GSoC (Google Summer of Code)
>>>>> with
>>>>> scikit-learn, and the core team has been quite silent about team.
>>>>>
>>>>> I am happy to announce that we will be taking part in the scikit-learn
>>>>> again. The reason that we decided to do this is to give a chance to the
>>>>> young, talented, and motivated students.
>>>>>
>>>>> Importantly, our most limiting resource is the time of our experienced
>>>>> developers. This is clearly visible from the number of pending pull
>>>>> requests. Hence, we need students to be very able and independent. This
>>>>> of course means that they will be getting supervision from mentors.
>>>>> Such
>>>>> supervision is crucial for moving forward with a good project, that
>>>>> delivers mergeable code. However, we will need the students to be very
>>>>> good at interacting efficiently with the mentors. Also, I should stress
>>>>> that we will be able to take only a very few numbers of students.
>>>>>
>>>>> With that said, let me introduce the 2017 GSoC for scikit-learn. We
>>>>> have
>>>>> set up a wiki page which summarizes the experiences from last year and
>>>>> the ideas for this year:
>>>>> https://github.com/scikit-learn/scikit-learn/wiki/Google-sum
>>>>> mer-of-code-(GSOC)-2017
>>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_scikit-2Dlearn_scikit-2Dlearn_wiki_Google-2Dsummer-2Dof-2Dcode-2D-28GSOC-29-2D2017&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=H2nCh3txo-r0nse5_lCRDVy6d4ZPbhN07HjOLmxIvaY&e=>
>>>>>
>>>>> Interested students should declare their interest on the mailing list,
>>>>> and discuss with possible mentors here. Factors of success will be
>>>>>
>>>>> * careful work on a good proposal, that takes on of the ideas on the
>>>>> wiki
>>>>> but breaks it down in a realistic plan with multiple steps and shows
>>>>> a
>>>>> good understanding of the problem.
>>>>>
>>>>> * demonstration of the required skillset via successful pull requests
>>>>> in
>>>>> scikit-learn.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Ga?l
>>>>>
>>>>>
>>>>> --
>>>>> Gael Varoquaux
>>>>> Researcher, INRIA Parietal
>>>>> NeuroSpin/CEA Saclay , Bat 145, 91191 Gif-sur-Yvette France
>>>>> Phone: ++ 33-1-69-08-79-68
>>>>> http://gael-varoquaux.info
>>>>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__gael-2Dvaroquaux.info&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=y374tUtv0ORndPBCuIpGPXu3ISMxJcdDrLkeKw9IYC4&e=>
>>>>> http://twitter.com/GaelVaroquaux
>>>>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__twitter.com_GaelVaroquaux&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=O3f-GNDNGiA6ri2BTVjJyQMN7z1dXWSmeVsLujo0Tbo&e=>
>>>>> _______________________________________________
>>>>> scikit-learn mailing list
>>>>> scikit-learn at python.org
>>>>> https://mail.python.org/mailman/listinfo/scikit-learn
>>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.python.org_mailman_listinfo_scikit-2Dlearn&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbntv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=>
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> scikit-learn mailing list
>>>> scikit-learn at python.org
>>>> https://mail.python.org/mailman/listinfo/scikit-learn
>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.python.org_mailman_listinfo_scikit-2Dlearn&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbntv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=>
>>>>
>>>>
>> _______________________________________________
>> scikit-learn mailing list
>> scikit-learn at python.org
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.py
>> thon.org_mailman_listinfo_scikit-2Dlearn&d=DwICAg&c=clK7kQUT
>> WtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg
>> &m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbn
>> tv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=
>>
>>
>
>
> --
> Regards,
> Pradeep Thalasta
>
> _______________________________________________
> scikit-learn mailing list
> scikit-learn at python.org
> https://mail.python.org/mailman/listinfo/scikit-learn
>
>
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Message: 3
Date: Mon, 27 Feb 2017 14:46:36 -0800
From: Pradeep Thalasta <thalasta at usc.edu>
To: Scikit-learn user and developer mailing list
<scikit-learn at python.org>
Subject: Re: [scikit-learn] GSoC 2017
Message-ID:
<CAEBU=NM-dqum=1AeKd1+gUG+upZ+Z4+jJ-sMHk+Z1doVHkR6JQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Thanks Joel, will start with the contribution soon.
On 27 Feb 2017 2:35 pm, "Joel Nothman" <joel.nothman at gmail.com> wrote:
Hi Pradeep, we would usually only accept candidates who have shown their
proficiency and understanding of our package and processes by making some
contributions prior to this stage. you are certainly welcome to aim for
GSoC 2018 by beginning to develop your familiarity and rapport now. cheers,
Joel
On 28 Feb 2017 7:01 am, "Pradeep Thalasta" <thalasta at usc.edu> wrote:
> Hi,
> I'm new to open source contribution. Can i take part in GSoc as well?
>
>
> On Mon, Feb 27, 2017 at 11:29 AM, Raghav R V <ragvrv at gmail.com> wrote:
>
>> Or simply a public gist and importantly the link mailed here would do I
>> think...
>>
>> On 27 Feb 2017 8:28 p.m., "Raghav R V" <ragvrv at gmail.com> wrote:
>>
>>> They can still edit a wiki page from their fork of scikit learn I think.
>>> So I'd suggest doing that and mailing to this thread, the link to their
>>> proposal...
>>>
>>> On 27 Feb 2017 6:55 p.m., "Nelson Liu" <nfliu at uw.edu> wrote:
>>>
>>>> In past years students made a page on the wiki with their proposal;
>>>> this isn't possible anymore due to GitHub permissions. Perhaps an
>>>> alternative method for getting feedback should be suggested on the
>>>> introduction page?
>>>>
>>>> Nelson Liu
>>>>
>>>> On Mon, Feb 27, 2017 at 2:58 AM, Gael Varoquaux <
>>>> gael.varoquaux at normalesup.org> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> Students have been inquiring about the GSoC (Google Summer of Code)
>>>>> with
>>>>> scikit-learn, and the core team has been quite silent about team.
>>>>>
>>>>> I am happy to announce that we will be taking part in the scikit-learn
>>>>> again. The reason that we decided to do this is to give a chance to the
>>>>> young, talented, and motivated students.
>>>>>
>>>>> Importantly, our most limiting resource is the time of our experienced
>>>>> developers. This is clearly visible from the number of pending pull
>>>>> requests. Hence, we need students to be very able and independent. This
>>>>> of course means that they will be getting supervision from mentors.
>>>>> Such
>>>>> supervision is crucial for moving forward with a good project, that
>>>>> delivers mergeable code. However, we will need the students to be very
>>>>> good at interacting efficiently with the mentors. Also, I should stress
>>>>> that we will be able to take only a very few numbers of students.
>>>>>
>>>>> With that said, let me introduce the 2017 GSoC for scikit-learn. We
>>>>> have
>>>>> set up a wiki page which summarizes the experiences from last year and
>>>>> the ideas for this year:
>>>>> https://github.com/scikit-learn/scikit-learn/wiki/Google-sum
>>>>> mer-of-code-(GSOC)-2017
>>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_scikit-2Dlearn_scikit-2Dlearn_wiki_Google-2Dsummer-2Dof-2Dcode-2D-28GSOC-29-2D2017&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=H2nCh3txo-r0nse5_lCRDVy6d4ZPbhN07HjOLmxIvaY&e=>
>>>>>
>>>>> Interested students should declare their interest on the mailing list,
>>>>> and discuss with possible mentors here. Factors of success will be
>>>>>
>>>>> * careful work on a good proposal, that takes on of the ideas on the
>>>>> wiki
>>>>> but breaks it down in a realistic plan with multiple steps and shows
>>>>> a
>>>>> good understanding of the problem.
>>>>>
>>>>> * demonstration of the required skillset via successful pull requests
>>>>> in
>>>>> scikit-learn.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Ga?l
>>>>>
>>>>>
>>>>> --
>>>>> Gael Varoquaux
>>>>> Researcher, INRIA Parietal
>>>>> NeuroSpin/CEA Saclay , Bat 145, 91191 Gif-sur-Yvette France
>>>>> Phone: ++ 33-1-69-08-79-68
>>>>> http://gael-varoquaux.info
>>>>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__gael-2Dvaroquaux.info&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=y374tUtv0ORndPBCuIpGPXu3ISMxJcdDrLkeKw9IYC4&e=>
>>>>> http://twitter.com/GaelVaroquaux
>>>>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__twitter.com_GaelVaroquaux&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=O3f-GNDNGiA6ri2BTVjJyQMN7z1dXWSmeVsLujo0Tbo&e=>
>>>>> _______________________________________________
>>>>> scikit-learn mailing list
>>>>> scikit-learn at python.org
>>>>> https://mail.python.org/mailman/listinfo/scikit-learn
>>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.python.org_mailman_listinfo_scikit-2Dlearn&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbntv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=>
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> scikit-learn mailing list
>>>> scikit-learn at python.org
>>>> https://mail.python.org/mailman/listinfo/scikit-learn
>>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.python.org_mailman_listinfo_scikit-2Dlearn&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbntv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=>
>>>>
>>>>
>> _______________________________________________
>> scikit-learn mailing list
>> scikit-learn at python.org
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.py
>> thon.org_mailman_listinfo_scikit-2Dlearn&d=DwICAg&c=clK7kQUT
>> WtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg
>> &m=WOCvB_ncbkX6zknItZ8JGw5QvsCBNqh2DCc_AxGKj10&s=2HaUcj6htbn
>> tv3V5UTTAgAtZk6luVMnqXA9vEOlfJ_k&e=
>>
>>
>
>
> --
> Regards,
> Pradeep Thalasta
>
> _______________________________________________
> scikit-learn mailing list
> scikit-learn at python.org
> https://mail.python.org/mailman/listinfo/scikit-learn
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.python.org_mailman_listinfo_scikit-2Dlearn&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=8wN-jbuYw7VyipS2uLHiQg&m=SdunRabzBJNpIzcL2t6OsNtuhzVKbzr-DI484v3czLY&s=UEKHpAVTnVYDcV77QhqeRIesWqvTDMXx9RJj0JlqrKk&e=>
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