Re: [R] help with random forest package

2009-04-28 Thread Chrysanthi A.
Forest(..., inbag=TRUE) to see which > data point is OOB for which tree. > > I hope that's clear now. > > Cheers, > Andy > > > -- > *From:* Chrysanthi A. [mailto:chrys...@gmail.com] > *Sent:* Tuesday, April 28, 2009 8:52 AM >

Re: [R] help with random forest package

2009-04-28 Thread Liaw, Andy
look at the output of randomForest(..., inbag=TRUE) to see which data point is OOB for which tree. I hope that's clear now. Cheers, Andy From: Chrysanthi A. [mailto:chrys...@gmail.com] Sent: Tuesday, April 28, 2009 8:52 AM To: Liaw, Andy Cc: r-help

Re: [R] help with random forest package

2009-04-28 Thread Chrysanthi A.
; *From:* Chrysanthi A. [mailto:chrys...@gmail.com] > *Sent:* Monday, April 13, 2009 9:44 AM > > *To:* Liaw, Andy > *Cc:* r-help@r-project.org > *Subject:* Re: [R] help with random forest package > > > But how does it estimate that voting output? How does it get the 85.7% for

Re: [R] help with random forest package

2009-04-13 Thread Liaw, Andy
ypo). Cheers, Andy From: Chrysanthi A. [mailto:chrys...@gmail.com] Sent: Monday, April 13, 2009 9:44 AM To: Liaw, Andy Cc: r-help@r-project.org Subject: Re: [R] help with random forest package But how does it estimat

Re: [R] help with random forest package

2009-04-13 Thread Chrysanthi A.
> *Sent:* Friday, April 10, 2009 10:44 AM > > *To:* Liaw, Andy > *Cc:* r-help@r-project.org > *Subject:* Re: [R] help with random forest package > > > > Hi, > > To be honest, I cannot really understand what is the meaning of the votes.. > For example havin

Re: [R] help with random forest package

2009-04-13 Thread Liaw, Andy
riday, April 10, 2009 10:44 AM To: Liaw, Andy Cc: r-help@r-project.org Subject: Re: [R] help with random forest package Hi, To be honest, I cannot really understand what is the meaning of the votes.. For example having five sa

Re: [R] help with random forest package

2009-04-10 Thread Chrysanthi A.
t; > -- > *From:* Chrysanthi A. [mailto:chrys...@gmail.com] > *Sent:* Wednesday, April 08, 2009 2:56 PM > *To:* Liaw, Andy > *Cc:* r-help@r-project.org > *Subject:* Re: [R] help with random forest package > > Many thanks for the reply. > >

Re: [R] help with random forest package

2009-04-08 Thread Liaw, Andy
, just the underlying representation of the tree). Andy From: Chrysanthi A. [mailto:chrys...@gmail.com] Sent: Wednesday, April 08, 2009 2:56 PM To: Liaw, Andy Cc: r-help@r-project.org Subject: Re: [R] help with random fore

Re: [R] help with random forest package

2009-04-08 Thread Chrysanthi A.
Many thanks for the reply. So, extracting the votes, how can we clarify the classification result? If I want to predict in which class will be included an unknown sample, what is the rule that will give me that? Thanks a lot, Chrysanthi. 2009/4/8 Liaw, Andy > The source code of the whole pa

Re: [R] help with random forest package

2009-04-08 Thread Liaw, Andy
The source code of the whole package is available on CRAN. All packages are submitted to CRAN is source form. There's no "rule" per se that gives the final prediction, as the final prediction is the result of plural vote by all trees in the forest. You may want to look at the varUsed() and getTr

[R] help with random forest package

2009-04-08 Thread Chrysanthi A.
Hello, I am a phd student in Bioinformatics and I am using the Random Forest package in order to classify my data, but I have some questions. Is there a function in order to visualize the trees, so as to get the rules? Also, could you please provide me with the code of "randomForest" function, as