Displaying 20 results from an estimated 2000 matches similar to: "Random Forest Classification"
2015 Jul 07
5
[PATCH v2 1/1] paint visual host key with unicode box-drawing characters
A machine diff between one using ASCII and UTF-8 would yield not equal?
Is it reasonable to only use UTF-8 ("pretty" chars) with a command line
switch (forced) rather than as an override (implied) behaviour?
2001 Apr 02
1
what to do with windows message
requesting assistance on "MSTSC has caused an error in GDI.EXE. MSTSC will
now close."
this message has been given after reinstalling windows many times.
Terminal server is what we run)
what do I don't know
thanks
2016 Apr 12
1
Random Forest classification
Hi,
To evaluate the partial influence of a factor with a random Forest, wich response is OK/NOK I?m using partialPlot, being the x axis the factor axis and the Y axis is between -1 and 1. What this -1 and 1 means?
An example:
https://www.dropbox.com/s/4b92lqxi3592r0d/Captura.JPG?dl=0
Thanks for all!!!
[[alternative HTML version deleted]]
2017 Dec 02
0
How can you find the optimal number of values to randomly sample to optimize random forest classification without trial and error?
I have data set up like the following:
control1 <- sample(1:75, 3947398, replace=TRUE)
control2 <- sample(1:75, 28793, replace=TRUE)
control3 <- sample(1:100, 392733, replace=TRUE)
control4 <- sample(1:75, 858383, replace=TRUE)
patient1 <- sample(1:100, 28048, replace=TRUE)
patient2 <- sample(1:50, 80400, replace=TRUE)
patient3 <- sample(1:100, 48239, replace=TRUE)
control
2005 Nov 04
2
Classification Trees and basic Random Forest pkg using tree structures in C
Hello R-devel:
I have written a package, called "woods", that does classification trees
(R function CT), and currently, only the most basic functionality of
Random Forest, e.g. bagged trees with choices about sample size, with/without
replacement, size of (random) subset of covariates drawn when nodes are
split. My reason for writing this is twofold. First, I wanted to base
this
2005 Nov 04
2
Classification Trees and basic Random Forest pkg using t ree structures in C
> From: Hin-Tak Leung
>
> Izmirlian, Grant (NIH/NCI) wrote:
> <snipped>
> > The only interesting feature is that the tree structure has been
> > implemented in C. Its a neater way to carry stuff around and I am
> > guessing would make future implementation easier.
> >
> > Because of its inherent redundancy from the users standpoint, it
> >
2010 Aug 10
0
Using R in combination with GRASS for image classification
Hello everybody!
For my academic project work I intend to use only open-source software. My
objective is to carry out classification of satellite digital images using
Geostatistics. I found out GRASS is a good software for image processing.
Also a good geostatistics software is R. It is also known that R can be used
in combination with GRASS. But I am not able to confirm that satellite
digital
2016 Jul 09
0
New package 'forestinventory: Design-Based Global and Small-Area Estimations for Multiphase Forest Inventories'
Dear R users,
We are happy to announce that the R package 'forestinventory: Design-Based Global and Small-Area Estimations for Multiphase Forest Inventories'
is now on CRAN (https://cran.r-project.org/web/packages/forestinventory/).
The aim of our package is to provide global- and smallarea estimators for twophase and threephase forest inventories under simple and cluster sampling.
The
2016 Jul 09
0
New package 'forestinventory: Design-Based Global and Small-Area Estimations for Multiphase Forest Inventories'
Dear R users,
We are happy to announce that the R package 'forestinventory: Design-Based Global and Small-Area Estimations for Multiphase Forest Inventories'
is now on CRAN (https://cran.r-project.org/web/packages/forestinventory/).
The aim of our package is to provide global- and smallarea estimators for twophase and threephase forest inventories under simple and cluster sampling.
The
2010 May 26
3
cluster analysis and supervised classification: an alternative to knn1?
Hi,
I have a 1.000 observations with 10 attributes (of different types: numeric,
dicotomic, categorical ecc..) and a measure M.
I need to cluster these observations in order to assign a new observation
(with the same 10 attributes but not the measure) to a cluster.
I want to calculate for the new observation a measure as the average of the
meausures M of the observations in the cluster
2007 Jan 29
3
comparing random forests and classification trees
Hi,
I have done an analysis using 'rpart' to construct a Classification Tree. I
am wanting to retain the output in tree form so that it is easily
interpretable. However, I am wanting to compare the 'accuracy' of the tree
to a Random Forest to estimate how much predictive ability is lost by using
one simple tree. My understanding is that the error automatically displayed
by the two
2004 Feb 12
1
Importing BSQ/BIP/BIL files into R
I was hoping I could get some help with an import question. I work with
remote sensing imagery which commonly comes in binary form in various
interleaving formats (byte interleaved by line, by pixel, etc..). These
files are 2d spatial x B bands in size, and I want to be able to extract the
band values from various pixels (so each line of data into R would be one
pixel x B bands).
What's the
2011 Oct 19
0
R classification
hello, i am so glad to write you.
i am dealing now with writing my M.Sc in Applied Statistics thesis, titled " Data Mining Classifiers and Predictive Models Validation and Evaluation".
I am planning to compare several DM classifiers like "NN, kNN, SVM, Dtree, and Naïve Bayes" according to their Predicting accuracy, interpretability, scalability, and time consuming etc.
I have
2011 Sep 28
1
how to solve a simple discrete Bayesian Belief Network?
Can somebody save-me? Thanks in advance!
#R script:
#trying to find out how solve a discrete Bayesian Belief Network.
#option: using 'catnet' package
#BEGIN
library(catnet)
cnet <- cnNew(nodes = c("a", "b", "c"), cats = list(c("1", "2"),
c("1", "2"), c("1", "2")), parents = list(NULL, c(1), c(1,
2004 May 26
3
Using R in C++
Hello,
Is it possible to use R functions (in my case: ks.test()) from C++
-applications? That is, I get the impression R can execute C/C++ code, but
is there any possibility to do the opposite? Where can I find help?
-------------------------------------------
Ph. D. J??rgen Wallerman
Swedish University of Agricultural Sciences
Remote Sensing Laboratory
S901 83 UME??
2013 Jul 12
2
"Proper" way to use a "hidden" function in an R-package?
R-developers:
I'm working on updating my R package "spatial.tools", and one thing I
was wondering was the proper way to have hidden functions -- should I
simply not export them to the namespace and use the ::: operator to
call them (which is what I currently do)?
--j
--
Jonathan A. Greenberg, PhD
Assistant Professor
Global Environmental Analysis and Remote Sensing (GEARS)
2011 Aug 23
5
Easier ways to create .Rd files?
R-helpers:
Are there any ways to auto-generate R-friendly (e.g. will pass a
compilation check) .Rd files given a set of .R code? How about GUIs
that help properly format the .Rd files? Thanks! I want a basic set
of .Rd files that I can update as I go, but as with most things my
documentation typically lags behind my coding by a few days.
--j
--
Jonathan A. Greenberg, PhD
Assistant Project
2009 Mar 18
2
How do I set the Windows temporary directory in R?
I'm trying to redirect where temporary files go under R to
D:\temp\somerandomname from its default (C:\Documents and
Settings\username\Temp\somerandomname) -- how do I go about doing this?
--j
--
Jonathan A. Greenberg, PhD
Postdoctoral Scholar
Center for Spatial Technologies and Remote Sensing (CSTARS)
University of California, Davis
One Shields Avenue
The Barn, Room 250N
Davis, CA 95616
2010 Jan 08
2
time series analysis for a time series without a regular frequency
Hello,
I am trying to conduct a time series analysis on historic hydrologic data,
but I cannot coerce it into class ts because it does not have regular
sampling intervals (some years have 20 samples, other have 8). Specifically
I am trying to perform a CUSUM or or other step change detection, but the
packages all seem to require data as ts.
Is there a way to coerce my data into ts while
2009 Oct 23
2
splitting a vector of strings...
Quick question -- if I have a vector of strings that I'd like to split
into two new vectors based on a substring that is inside of each string,
what is the most efficient way to do this? The substring that I want to
split on is multiple characters, if that matters, and it is contained in
every element of the character vector.
--j
--
Jonathan A. Greenberg, PhD
Postdoctoral Scholar