Bio::Tools::RandomDistUsertContributed Perl Bio::Tools::RandomDistFunctions(3)NAMEBio::Tools::RandomDistFunctions - A set of routines useful for
generating random data in different distributions
SYNOPSIS
use Bio::Tools::RandomDistFunctions;
my $dist = Bio::Tools::RandomDistFunctions->new();
for my $v ( 1..1000 ) {
my $birth_dist = $dist->rand_birth_distribution($lambda);
# ... do something with the variable
}
DESCRIPTION
Most of the code is based on the C implementation of these routines in
Mike Sanderson's r8s's package. See
http://loco.biosci.arizona.edu/r8s/ for information on his software.
This code tries to be fast and use available faster BigInt and GMP
library methods when those modules are available.
FEEDBACK
Mailing Lists
User feedback is an integral part of the evolution of this and other
Bioperl modules. Send your comments and suggestions preferably to the
Bioperl mailing list. Your participation is much appreciated.
bioperl-l@bioperl.org - General discussion
http://bioperl.org/wiki/Mailing_lists - About the mailing lists
Support
Please direct usage questions or support issues to the mailing list:
bioperl-l@bioperl.org
rather than to the module maintainer directly. Many experienced and
reponsive experts will be able look at the problem and quickly address
it. Please include a thorough description of the problem with code and
data examples if at all possible.
Reporting Bugs
Report bugs to the Bioperl bug tracking system to help us keep track of
the bugs and their resolution. Bug reports can be submitted via the
web:
http://bugzilla.open-bio.org/
AUTHOR - Jason Stajich
Email jason-at-bioperl.org
CONTRIBUTORS
Thanks to Mike Sanderson for assistance in the getting this
implementation together.
APPENDIX
The rest of the documentation details each of the object methods.
Internal methods are usually preceded with a _
birth_distribution
Title : rand_birth_distribution
Usage : my $randvar = $dist->
rand_birth_distribution($lambda);
Function: Returns a random number from a birth process waiting
time with a fixed interval
1.0. Times are measured from 0=present,1=root;
Returns : floating point number
Args : $lambda ( > 0 )
References : This is based on code by Mike Sanders in r8s.
Ross, Stochastic Processes, p. 145 for the density
rand_geometric_distribution
Title : rand_geometric_distribution
Usage : my $randvar = $dist->rand_geometric_distribution($param);
Function: Returns a random geometric variate distributed with
paramater $param, according to
c.d.f. 1 - ( 1- param) ^ n
Returns : integer
Args : $param ( 0 > $param < 1 )
rand_exponentional_distribution
Title : rand_exponentional_distribution
Usage : my $var = $dist->rand_exponentional_distribution($param);
Function: Returns a random exponential variate distributed with parameter
$param, according to c.d.f 1 - e^(-param * x)
Returns : floating point number
Args : $param ( > 0 )
rand_normal_distribution
Title : rand_normal_distribution
Usage : my $var = $dist->rand_normal_distribution()
Function: Returns a random normal (gaussian) variate distributed
Returns : floating point number
Args : none
perl v5.14.12011-07-22Bio::Tools::RandomDistFunctions(3)
