Probability in random numbers!
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How to create a random 2D array that each cell has different probabilities to be either 0 or 1 for example? In other words, how to t create a 2D array with each cell having a probability of 0.1 to be 1's and 0.9 probability to be 0's.
回答（2 个）
Walter Roberson
2019-8-5
rand(m, n) <= 0.1
would be true (1) with probability 0.1
Use randsrc()
randsrc(5,4,[[0,1];[.9,.1]])
% 5 x 4 array
% .9 prob. of 0
% .1 prob of 1
*Requires communications toolbox
3 个评论
Here's a little test to see if the probabilities are roughly correct. Run this line lots of times and the values should all hover around 10% since there's a 10% probability of 1 and 90% propbability of 0.
mean(randsrc(10000000,1,[[0,1];[.9,.1]]))
Mina Mansour
2019-8-6
Adam Danz
2019-8-6
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