...@datanalytics.com
Cc: r-help@r-project.org
Subject: Re: [R] Recursive partitioning algorithms in R vs. alia
A point of history:
Both the commercial CART program and the rpart() function are based on
the
book Classification and Regression Trees (Breiman, Friedman, Olshen,
Stone,
1984). As a reader
A point of history:
Both the commercial CART program and the rpart() function are based on the
book Classification and Regression Trees (Breiman, Friedman, Olshen, Stone,
1984). As a reader/commentator on one of the early drafts I got to know the
material well. CART started as a large Fortr
I have used all 3 packages for decision trees (SAS/EM, CART and R). As
another user on the list commented, the algorithms CART uses are
proprietary. I also know that since the algorithms are proprietary, the
decision tree that you get from SAS is based on a "slightly different"
algorithm so as to n
Wensui Liu wrote:
well, how difficult to code random forest with sas macro + proc split?
if you are lack of sas programming skill, then you are correct that
you have to wait for 8 years :-)
It is true one can use the macro language to obtain some control flow
the plain SAS language and its PR
well, how difficult to code random forest with sas macro + proc split?
if you are lack of sas programming skill, then you are correct that
you have to wait for 8 years :-)
i don't know how much sas experience you have. as far as i know, both
bagging and boosting have been implemented in sas em for
Wensui Liu wrote:
in terms of the richness of features and ability to handle large
data(which is normal in bank), SAS EM should be on top of others.
Should be ? That is not at all my experience.
SAS EM is very much lagging behind current
research. You will find variants of random forests
in R
in terms of the richness of features and ability to handle large
data(which is normal in bank), SAS EM should be on top of others.
however, it is not cheap.
in terms of algorithm, split procedure in sas em can do
chaid/cart/c4.5, if i remember correctly.
On Fri, Jun 19, 2009 at 2:35 PM, Carlos J.
"Carlos J. Gil Bellosta" wrote
>
>I had a conversation with a guy working in a "business intelligence"
>department at a major Spanish bank. They rely on recursive partitioning
>methods to rank customers according to certain criteria.
>
>They use both SAS EM and Salford Systems' CART. I have used
Dear R-helpers,
I had a conversation with a guy working in a "business intelligence"
department at a major Spanish bank. They rely on recursive partitioning
methods to rank customers according to certain criteria.
They use both SAS EM and Salford Systems' CART. I have used package R
part in the
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