On 01/16/2012 10:12 AM, Andreas wrote:
> On 01/16/2012 10:07 AM, Andreas wrote:
>
>> On 01/16/2012 09:44 AM, Andreas wrote:
>>
>>
>>> Hi Everybody.
>>> I'm still trying to hack at the trees. This time I stumbled across the
>>> computation of the Gini index.
>>> Could someone please explai
On Mon, Jan 16, 2012 at 10:13:44AM +0100, Andreas wrote:
> I'm not sure I used the right proposition, though.
> Hacking at the trees probably means hacking in the woods.
> I guess I should just be hacking the trees, which
> makes more sense in either context.
Actually no, if you look up the litera
On 01/16/2012 10:06 AM, Olivier Grisel wrote:
> 2012/1/16 Andreas:
>
>> Hi Everybody.
>> I'm still trying to hack at the trees.
>>
> Which is an etymologically valid attitude.
>
>http://etymonline.com/?search=hack
>
> As for your question, I let the tree experts answer :)
>
>
I'm
On 01/16/2012 10:07 AM, Andreas wrote:
> On 01/16/2012 09:44 AM, Andreas wrote:
>
>> Hi Everybody.
>> I'm still trying to hack at the trees. This time I stumbled across the
>> computation of the Gini index.
>> Could someone please explain this to me?
>> Hastie, Tishirani and Friedman told me th
On Mon, Jan 16, 2012 at 10:06:18AM +0100, Olivier Grisel wrote:
> 2012/1/16 Andreas :
> > I'm still trying to hack at the trees.
> Which is an etymologically valid attitude.
> http://etymonline.com/?search=hack
As long as you are not doing it with a tray (
http://www.youtube.com/watch?v=Sv5iEK
2012/1/16 Andreas :
> Hi Everybody.
> I'm still trying to hack at the trees.
Which is an etymologically valid attitude.
http://etymonline.com/?search=hack
As for your question, I let the tree experts answer :)
--
Olivier
http://twitter.com/ogrisel - http://github.com/ogrisel
---
On 01/16/2012 09:44 AM, Andreas wrote:
> Hi Everybody.
> I'm still trying to hack at the trees. This time I stumbled across the
> computation of the Gini index.
> Could someone please explain this to me?
> Hastie, Tishirani and Friedman told me this is computed as
> \sum_{k} p_{mk}*(1- p_{mk})
> wh
Hi Everybody.
I'm still trying to hack at the trees. This time I stumbled across the
computation of the Gini index.
Could someone please explain this to me?
Hastie, Tishirani and Friedman told me this is computed as
\sum_{k} p_{mk}*(1- p_{mk})
where k enumerates the classes and m denotes a node (I
