Displaying 20 results from an estimated 25 matches for "abscontdistribution".
2009 Jun 23
1
implementing Maximum Likelihood with distrMod when only the PDF is known
...uels
I am trying to use the (very nice) package distrMod as I want to
implement maximum likelihood (ML) fit of some univariate data for which
I have derived a theoretical continuous density (pdf). As it is a
parametric density, I guess that I should implement myself a new
distribution of class AbscontDistributions (as stated in the pdf on
"creating new distributions in distr"), and then use MLEstimator() from
the distrMod package. Is that correct or is there a simpler way to go?
Note that I want to use the distr package because it allows me to
implement simply the convolution of my theoretical...
2004 Jan 30
2
request for comments --- package "distr" --- S4 Classes for Distributions
...for these functions
in S).
All distributions of the " base" package for which such "r", "d", "p",
and "q"
functions exist are implemented (essentially by wrappers of the
origininal code)
as subclasses of either of the two the subclasses "AbscontDistribution" or
" DiscreteDistribution".
This approach seems very appealing to us from a conceptual viewpoint:
Just pass an object of some derived distribution class to a generic
function as
argument and let the dispatching mechanism decide what to do on run-time.
As an example, we may a...
2009 Apr 20
0
New versions for the distr-family of packages
...much/ faster / slimmer for results of *,/,^
+ slot d for results of *,/, exp() now is correct at 0 by extrapolation
COMFORT METHODS
+ getLow/getUp methods (for "reasonable" endpoints for distributions with
possibly unbounded support) for
*DiscreteDistribution,
*AbscontDistribution,
*UnivarLebDecDistribution,
*UnivarMixingDistribution
+ q.r, p.l (methods for right continuous quantile function
and left continuous cdf) for
* DiscreteDistribution
* AbscontDistribution (takes care of constancy regions in p)
* UnivarLebDecDistribu...
2009 Apr 20
0
New versions for the distr-family of packages
...much/ faster / slimmer for results of *,/,^
+ slot d for results of *,/, exp() now is correct at 0 by extrapolation
COMFORT METHODS
+ getLow/getUp methods (for "reasonable" endpoints for distributions with
possibly unbounded support) for
*DiscreteDistribution,
*AbscontDistribution,
*UnivarLebDecDistribution,
*UnivarMixingDistribution
+ q.r, p.l (methods for right continuous quantile function
and left continuous cdf) for
* DiscreteDistribution
* AbscontDistribution (takes care of constancy regions in p)
* UnivarLebDecDistribu...
2005 Sep 29
2
solution of convolution equation
Hello,
May be somebody can help me...
I am trying to find a solution of a convolution equation using fft (and
unfortunately I do not have a good background for this).
So I am just trying to figure out how it can be implemented in R. I have
two multidimensional independent variables X and Z
and I know their densities fx and fz, which are multidimensional arrays.
So I have to find the density of
2012 Jan 03
6
calculate quantiles of a custom function
Hi,
I guess that my problem has an obvious answer, but I have not been able to
find it.
Suppose I create a custom function, consisting of two beta-distributions:
myfunction <- function(x) {
dbeta(x,2,6) + dbeta(x,6,2)
}
How can I calculate the quantiles of myfunction?
I have not seen any continous function treated in the docs, and applying the
"quantile function" gives me an
2004 Apr 26
0
New package: distr
...lability on CRAN of a new package distr .
It is to provide a conceptual treatment of random variables (r.v.'s) by
means of
S4--classes. A virtual mother class "Distribution" is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2005 Mar 31
0
version 1.5 of package "distr" available
...tion of "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2004 Apr 26
0
New package: distr
...lability on CRAN of a new package distr .
It is to provide a conceptual treatment of random variables (r.v.'s) by
means of
S4--classes. A virtual mother class "Distribution" is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2005 Mar 31
0
version 1.5 of package "distr" available
...tion of "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2006 Nov 28
0
New versions for the distr-family of packages, of startupmsg, and a new package "distrDoc"
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2006 Nov 28
0
New versions for the distr-family of packages, of startupmsg, and a new package "distrDoc"
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2004 Sep 27
0
new version of package "distr" available
...tion of "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2004 Sep 27
0
new version of package "distr" available
...tion of "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "base" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
Additionally, we also provide classes for a standardized treatment of...
2007 Jul 30
0
New versions for the distr-family of packages and of package startupmsg
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2007 Jul 30
0
New versions for the distr-family of packages and of package startupmsg
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2006 May 12
0
New versions for the distr-family of packages, and a new package "startupmsg"
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2006 May 12
0
New versions for the distr-family of packages, and a new package "startupmsg"
...******* "distr":
"distr" is to provide a conceptual treatment of random variables
(r.v.'s) by means of S4--classes. A virtual mother class "Distribution"
is introduced.
All distributions of the "stats" package are implemented as subclasses of
either "AbscontDistribution" or "DiscreteDistribution".
Using these classes, we also provide (default) methods to automatically
generate the image distributions under unary mathematical operations as
well as a general convolution algorithm.
----------------------------------------------------------------------...
2005 Dec 23
2
convolution of the double exponential distribution
Is there any R function that computes the convolution of the double
exponential distribution?
If not, is there a good way to integrate ((q+x)^n)*exp(-2x) over x from
0 to Inf for any value of q and for any positive integer n? I need to
perform the integration within a function with q and n as arguments. The
function integrate() is giving me this message:
"evaluation of function gave a
2017 Aug 26
0
Find maxima of a function
> On 26 Aug 2017, at 16:39, niharika singhal <niharikasinghal1990 at gmail.com> wrote:
>
> Hi,
>
> Thanks for your mail, and time
>
> It is not working for some arguments, when mean value is like >6.
>
>
> case
>
> mc0 <- c(0.08844446,0.1744455,0.1379778,0.1209769,0.1573065,0.
> 1134463,0.2074027)
>
> rv