That uses the Boolean indexing function of numpy arrays iirc
On Mar 8, 2013 1:28 PM, "Mohamed Radhouane Aniba" <arad...@gmail.com> wrote:
> Simply because I am new to both python and scikit (Coming from R world)
>
> The problem is that I tried using load_svmlight_file with in particular
> RBF parameters example
> http://scikit-learn.org/stable/auto_examples/svm/plot_rbf_parameters.html#example-svm-plot-rbf-parameters-py
>
> and I get a lot of problems / errors/ so I thought it is easier to use
> native format which preserve the structure of the variables used.
>
> What I tested in this script in particular is something like :
>
> #iris = load_iris()
> #X = iris.data
> #Y = iris.target
> X,Y = load_svmlight_file("toto")
> X = X.toarray()
>
> # dataset for decision function visualization
>
> X_2d = X[:, :2]
> X_2d = X_2d[Y > 0]
> Y_2d = Y[Y > 0]
> Y_2d -= 1
>
> What does the section _2d means ? not vey clear
>
> Rad
>
> On Mar 8, 2013, at 1:21 PM, Philipp Singer <kill...@gmail.com> wrote:
>
> > Why do you want to convert libsvm to another structure?
> >
> > I don't quite get it.
> >
> > If you want to use examples: scikit learn has included datasets that can
> > be directly loaded. I think this section should help:
> > http://scikit-learn.org/stable/datasets/index.html
> >
> > Am 08.03.2013 18:44, schrieb Mohamed Radhouane Aniba:
> >> Hello !
> >>
> >> I am wondering if someone has developed a snippet or a script that
> converts libsvm format into a format directly usable by scikit without the
> need to use of load_svmlight_file.
> >>
> >> The reason is that I am trying to use the examples provided on the
> website, but all of them are written in a format that is not a libsvm one.
> >>
> >> Thanks
> >>
> >> Rad
> >>
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
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> >
> >
> ------------------------------------------------------------------------------
> > Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
> > Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
> > endpoint security space. For insight on selecting the right partner to
> > tackle endpoint security challenges, access the full report.
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>
> ------------------------------------------------------------------------------
> Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
> Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
> endpoint security space. For insight on selecting the right partner to
> tackle endpoint security challenges, access the full report.
> http://p.sf.net/sfu/symantec-dev2dev
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------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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