Displaying 6 results from an estimated 6 matches for "tomdharray".
2017 Jul 28
4
R-Package for Recursive Partitioning without Classification or Regression
Hello,
I have a question related to recursive partitioning, but I cannot find
an answer, likely because I don't know how to properly word my Google
search query.
All recursive partitioning examples, which I can find, are used for
either classification or regression trees like
library(tree)
data(iris)
tree(Species ~ Sepal.Width + Petal.Width, data = iris)
which implies building a
2017 Aug 01
0
R-Package for Recursive Partitioning without Classification or Regression
...not
in the math behind the algorithms.
Are you looking for something like this?
https://rpubs.com/gaston/dendrograms
Just please note, that this is very far from rpart in term of how the
algorithms work (already mentioned by Bert Gunter)
Best,
Michal
2017-07-28 14:56 GMT+02:00 Tom D. Harray <tomdharray at gmail.com>:
> Hello,
>
> I have a question related to recursive partitioning, but I cannot find
> an answer, likely because I don't know how to properly word my Google
> search query.
>
>
> All recursive partitioning examples, which I can find, are used for
> ei...
2011 Oct 05
1
fgrep with caret (^) meta-character in system() call
Hi there,
I would like to use my linux system's fgrep to search for a text pattern
in a file. Calling system with
system("fgrep \"SearchPattern\" /path/to/the/textFile.txt")
works in general, but I need to search for the search pattern at the
beginning of the line.
The corresponding shell command
fgrep "^SearchPattern" /path/to/the/textFile.txt
2011 Feb 04
3
lapply, strsplit, and list elements
Hi there,
I have a problem about lapply, strsplit, and accessing list elements,
which I don't understand or cannot solve:
I have e.g. a character vector with three elements:
x = c("349/077,349/074,349/100,349/117",
"340/384.2,340/513,367/139,455/128,D13/168",
"600/437,128/903,128/904")
The task I want to perform, is to generate a list,
2010 Nov 05
0
User defined function and nonlinear least-squares fit
Hello,
I'd like to fit a user defined function to a data set, but I have problems
to find my problem. The user defined function is a combination of two
rectangular functions, and the listing below gives an example for what I
want to do. The problem is, that I get the error message for fit1 and fit2
"Error in nlsModel(formula, mf, start, wts) : singular gradient matrix at
initial
2011 Jun 03
2
Arules: R Crashes when running eclat with tidLists=TRUE
Hello,
I'm using the eclat function of the arules package (1.0-6) for the
identification of frequent itemsets. I need the tidLists, but if I set
in the function tidLists=TRUE R crashes (Windows XP Professional SP3,
32 bit, R version 2.12.1 (2010-12-16), reproducible on two different
computers) with two different error messages or non at all. Minimum
examples are:
library(arules)