Re: generate polynomial features given a vector X and degree

[Juan Pablo Carbajal]

2011/12/19 Jordi Gutiérrez Hermoso <address@hidden>:
> On 19 December 2011 07:09, aliko <address@hidden> wrote:
>> Is there a function to generate polynomial features given a vector X and
>> degree.
>> For example I have 3-element vector X and for given degree=3 I want to get a
>> vector like
>>
>> [X(1), X(2), x(3), X(1)^2, X(2)^2, X(3)^2, X(1)*X(2), X(1)*X(3), X(2)*X(3),
>> X(1)^3, X(2)^3, X(3)^3, X(1)^2*X(2), X(1)^2*X(3), ... , X(1)*X(2)*X(3)]
>>
>> For any given vector X of any length and for any given degree?
>
> Here are my solutions for it:
>
>    http://jordi.platinum.linux.pl/machlean/
>
> I forget which one you're working on. I think it's 5 or 6.
>
> HTH,
> - Jordi G. H.
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Yes,
multinom.m (specfun package)
http://octave.sourceforge.net/specfun/function/multinom.html

-- 
M. Sc. Juan Pablo Carbajal
-----
PhD Student
University of Zürich
http://ailab.ifi.uzh.ch/carbajal/