Home > wafo > wsim > private > comb2pro.m

comb2pro

PURPOSE ^

Probability vector of placing a cycle on a specific place given all combinations

SYNOPSIS ^

prob=comb2pro(combinations,freq)

DESCRIPTION ^

  COMB2PRO Probability vector of placing a cycle on a specific place given all combinations
  
   Calculates the probability vector of placing a cycle on a specific place 
   given the number of possible places (combinations).

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

01 function prob=comb2pro(combinations,freq)
02 % COMB2PRO Probability vector of placing a cycle on a specific place given all combinations
03 % 
04 %  Calculates the probability vector of placing a cycle on a specific place 
05 %  given the number of possible places (combinations).
06 
07 %  Copyright 1993, Mats Frendahl & Igor Rychlik, 
08 %  Dept. of Math. Stat., University of Lund.
09 
10 denominator=combinations+freq-1;
11 add=(denominator==0);
12 denominator=denominator+add;
13 nominator=combinations+add-1;
14 addcomb=(combinations==0);
15 lambda=freq./(combinations+addcomb);
16 %pp=nominator./denominator;
17 %pp=1./(1+lambda);
18 pp=(1-ones(length(combinations+add),1)./(combinations+add)).^freq;
19 %pp=exp(-lambda);
20 pp=pp';
21 
22 tmp=zeros(length(pp),1); prob=zeros(length(pp),1);
23 tmp(1)=1;
24 for i=2:length(pp), tmp(i)=tmp(i-1)*pp(i-1); end
25 prob=[tmp(length(tmp))*pp(length(pp)) (1-pp).*tmp'];
26 
27 
28

Mathematical Statistics
Centre for Mathematical Sciences
Lund University with Lund Institute of Technology

Comments or corrections to the WAFO group


Generated on Thu 06-Oct-2005 02:21:16 for WAFO by m2html © 2003