NAME
GitInsight::Util - A set of functions that uses PDL to produce stats
SYNOPSIS
use GitInsight::Util qw(prob label);
my $prob = prob(100,50); #gives probability using pdf_beta of PDLDESCRIPTION
This package contains some functions that uses PDL to do some scientific calculations.
EXPORTED FUNCTIONS
prob()
calculate the probability using bayesian inference (pdf_beta of PDL::Stats). requires two argument, the total number of trials and the watched events that actually matched.
wday()
Requires a date in string, with this format:
my $day=wday("2014-03-15")
#$day is Tuereturns the weekday of the given date
gen_trans_mat()
Accept an argument, 1 or 0, 1 enable no_day_stats, and it causes to return an empty zero padded piddle. If the argument is 0 it returns an hashref wich keys are the wdays that contains empty padded zero piddle
gen_m_mat()
Given a label number as argument, it generates a zero padded matrix of 1 row and of n columns as the label available, with having a 1 only set at the specified label. (used for calculating the prediction)
markov
requires 3 arguments: the matrix that selects the state (generated by gen_m_mat), the transiction matrix, and the power that must be applied at the transition matrix. It returns a PDL piddle containing the probability for each next state
markov_list
requires 3 arguments: the matrix that selects the state (generated by gen_m_mat), the transiction matrix, and the power that must be applied at the transition matrix. It returns a Perl list containing the probability for each next state.
markov_prob
requires 3 arguments: the matrix that selects the state (generated by gen_m_mat), the transiction matrix, and the power that must be applied at the transition matrix. It returns the maximum probability between the future states.
label
requires 1 argument: the number of commit to be assigned the appropriate label It returns the assigned label
label_step
requires an array composed by [0,n] where n is the maximum commit count ever had in a day of the contribution calendar. it sets the internal data structure to be able to call label()
info/error/warning
Just used to print the output to the terminal:
info "All ok"
error "Something bad happened"
warning "uh oh!"AUTHOR
mudler <mudler@dark-lab.net>
COPYRIGHT
Copyright 2014- mudler
LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.