Here is my problem, 100 decision trees were built(similar to random forest) and I want to replace some of them by new trees. How can I define a tree array including 100 trees, i.e. t[100], and every t[n] is an "C5.0" object, such that when a new tree comes, i can do n<-10 t[n]<-C5.0(...) -- View this message in context: http://r.789695.n4.nabble.com/Can-I-define-a-object-array-in-R-tp4656909.html Sent from the R help mailing list archive at Nabble.com.
In R, lists are used for that. See ?list or any intro to R for details. Sarah On Tuesday, January 29, 2013, cuiyan wrote:> Here is my problem, > 100 decision trees were built(similar to random forest) and I want to > replace some of them by new trees. > How can I define a tree array including 100 trees, i.e. t[100], and every > t[n] is an "C5.0" object, > such that > when a new tree comes, i can do > n<-10 > t[n]<-C5.0(...) > > > >-- Sarah Goslee http://www.stringpage.com http://www.sarahgoslee.com http://www.functionaldiversity.org [[alternative HTML version deleted]]
Hello Sarah, You may want to use a package instead of trying to implement those data structures. For example: http://www.bioconductor.org/packages/release/bioc/html/graph.html Best, -m On 29 January 2013 11:22, Sarah Goslee <sarah.goslee at gmail.com> wrote:> In R, lists are used for that. See ?list or any intro to R for details. > > Sarah > > On Tuesday, January 29, 2013, cuiyan wrote: > >> Here is my problem, >> 100 decision trees were built(similar to random forest) and I want to >> replace some of them by new trees. >> How can I define a tree array including 100 trees, i.e. t[100], and every >> t[n] is an "C5.0" object, >> such that >> when a new tree comes, i can do >> n<-10 >> t[n]<-C5.0(...) >> >> >> >> > > -- > Sarah Goslee > http://www.stringpage.com > http://www.sarahgoslee.com > http://www.functionaldiversity.org > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.
Hello,
You can store any kind of objects in a list. More or less like the
following.
tlist <- vector("list", 100)
n <- 10
tlist[[n]] <- C5.0(...)
Hope this helps,
Rui Barradas
Em 29-01-2013 07:01, cuiyan escreveu:> Here is my problem,
> 100 decision trees were built(similar to random forest) and I want to
> replace some of them by new trees.
> How can I define a tree array including 100 trees, i.e. t[100], and every
> t[n] is an "C5.0" object,
> such that
> when a new tree comes, i can do
> n<-10
> t[n]<-C5.0(...)
>
>
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/Can-I-define-a-object-array-in-R-tp4656909.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>