How to set probability for a conditional statement

Programming Questions

omar.o.he..

How to set probability for a conditional statement

in Programming Questions • 1 month ago

Dear All,

I'm a beginner programmer, having a beginner question :)

I'm trying to set a probability result for a conditional statement.

To be honest i tried to read a bit about probability in processing but couldn't get my head around it without a clear example.

I'm trying to program a Cellular Automata script and want to set the rules using probability as follows:

// Rules of Life
if ((board[x][y] == 1) && (neighbors < 1)) next[x][y] = 0; // Loneliness
else if ((board[x][y] == 1) && (neighbors > 5)) next[x][y] = 0; // Overpopulation
else if ((board[x][y] == 0) && (neighbors == 2)) next[x][y] = 1; //Reproduction
else next[x][y] = board[x][y]; // Stasis

I want to replace the results by probability, so for example if the board cell state is (1) and the neighbours are > 5 then the chance of death (0) is 60% (not 100% as it is now)...

Many thanks,

Omar

Replies(4)

omar.o.he..

Re: How to set

1 month ago

To put the questoin in more simple terms, this is what I want to achieve:

if ((case A) && (case B)) = there is a 35% that (case C) occairs

asimes

Re: How to set probability for a conditional statement

1 month ago

if (board[x][y] == 1 && neighbors > 5 && random(1.0) > 0.4) next[x][y] = 0;

random(1.0) will make a random number between 0.0 and 1.0. You can make probabilities by comparing the random number with 1.0-target (where target is the probability you want).