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How to create a random Bernoulli matrix ?

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Mohab Mostafa
Mohab Mostafa 2015-10-6
评论： Weijian Liu 2022-6-4
I want to create a 256x256 random Bernoulli matrix, how to do that in matlab ?
  1 个评论
Bilal Siddiqui
Bilal Siddiqui 2018-10-2
It's simple. A Bernoulli trial produces one of only two outcomes (say 0 or 1). You can use binord. For example p=0.2; n=256; A=binornd(1,p*ones(n));
produces an nxn array of Bernoulli trials which are either 0 or 1 in each outcome. Hope this answers your question.

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采纳的回答

Robert Dylans
Robert Dylans 2015-10-7
编辑：Robert Dylans 2015-10-7
p=0.5; %probability of success
n=256;
A=rand(n);
A=(A<p)
or
p=0.5;
A=(rand(256)<p)
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显示 3更早的评论
Walter Roberson
Walter Roberson 2015-10-7
If you have a matrix A of 0 and 1 then you can make it a matrix of -1 and +1 by using
A*2 - 1

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更多回答（2 个）

Byron McMullen
Byron McMullen 2021-2-15
I use this.
bernoulli_matrix = randsrc(rows,cols,[-1,1]);
Bilal Siddiqui
Bilal Siddiqui 2018-10-2
It's simple. A Bernoulli trial produces one of only two outcomes (say 0 or 1). You can use binord. For example p=0.2; n=256; A=binornd(1,p*ones(n));
produces an 256x256 array of Bernoulli trials which are either 0 or 1 in each outcome. Hope this answers your question.

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