R help - Nov 2007 - mtry in ctree_control()

Dear Group,

 

What is the actual usage of "mtry" in ctree(), or specifically,
ctree_control() since it's a single tree?  Thanks in advance.

 

Regards,

 

Kelvin Lam, MSc.

Analyst, Programming & Biostatistics

Institute for Clinical Evaluative Sciences (ICES)

2075 Bayview Avenue, G179 Toronto, ON M4N 3M5

(416) 480-4055 Ext. 3057 Fax: (416) 480-6048

email: kelvin.lam@ices.on.ca <mailto:kelvin.lam@ices.on.ca>  

 


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On Mon, 12 Nov 2007, Lam, Kelvin wrote:
> What is the actual usage of "mtry" in ctree(), or specifically,
> ctree_control() since it's a single tree?  Thanks in advance.
As the associated man page explains: This is useful if you want to build
an ensemble (such as a random forest) based on ctree()s. If you only want
to fit a single tree, you typically want to keep the default value "mtry
0", i.e., no random selection.
Z