Displaying 6 results from an estimated 6 matches for "polychotom".
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polychotomy
2000 Mar 20
3
: multinom()
Dear R users,
Does anyone know if it is possible to use multinom to do a polychotomous
fit using one categorical and one numeric variable as response. The
doc. for multinom states that for formula , response can be K>2 classes.
Is this 2 and more, or as I have understood it only greater than 2. I
have tried fitting my data, but have only encountered error messages.
On another...
2002 Sep 27
2
Polymars
I've seen references to "polymars", an R implementation of Friedman's MARS
algorithm. Can anyone tell me where I might be able to find this (doesn't
seem to be in the contributed packages.
Thanks,
David
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1998 May 22
0
R-beta: R-0.61.3 for Win95/NT available
...ry Data Analysis
gee Generalized Estimating Equation models
integrate numerical integration
leaps Regression subset selection
locfit Local Regression, Likelihood and Density Estimtion.
mva Classical Multivariate Analysis
polymars (polychotomous) regression based on
Multivariate Adaptive Regression Splines
polynom A collection of functions to implement a class for
univariate polynomial manipulations
spatial functions for kriging and point pattern analysis
splines Regression Spline Fu...
1998 May 22
0
R-beta: R-0.61.3 for Win95/NT available
...ry Data Analysis
gee Generalized Estimating Equation models
integrate numerical integration
leaps Regression subset selection
locfit Local Regression, Likelihood and Density Estimtion.
mva Classical Multivariate Analysis
polymars (polychotomous) regression based on
Multivariate Adaptive Regression Splines
polynom A collection of functions to implement a class for
univariate polynomial manipulations
spatial functions for kriging and point pattern analysis
splines Regression Spline Fu...
2006 Dec 21
1
multinom(nnet) analogy for biglm package?
...set, but do not know how. I've only thought of a few possibilities
and write to seek advice and guidance on them or deepening or expanding
my search.
On smaller data sets, I have successfully loaded the data and issued
commands such as:
length(levels(factor(data$response)))
[1] 6 # implies polychotomy
library(nnet)
result <- multinom(data$response ~ 1 + data$var1 + data$var2 + ...)
# (I am interested in at most ten
# parameters; usually less than six)
For a 60-MB comma-separated-values text-format data file (with a few
hundred thousand records), object.size(data) returns roughly 86 MB. N...
2004 Aug 17
2
Re: Thanks Frank, setting graph parameters, and why social scientists don't use R
...n be very offputting, and could lead the rabbit to return to familiar SPSS territory.
Finally, friendlier error messages would also help. It took me 3 days, and opening every function I could, to work out that '...cannot find function xxx.data.frame...' meant that MICE was unable to make a polychotomous logistic imputation model converge for the variable immediately preceding it.
I am now off to the help files and FAQs to find out how to change graph parameters, as the plot.mids function in MICE a) doesn't allow one to select a subset of variables, and b) tells me that the graph it wants...