Randomly generate a matrix of zeros and ones with a non-uniform bias

i want to create a target set for my inputs. if i have a matrix of 4*6 and i want the two two colums to be the same i.e

0 0 0 0 0 0
0 0 0 0 1 1
0 0 1 1 0 0
1 1 0 0 0 0

how can i generate that matrix in matlab????

[Jan]

Please explain the properties of the wanted matrix. "i want the two two colums to be the same" is not clear.

[Image Analyst]

Here's one way:

m=[...
  0 0 0 0 0 0
  0 0 0 0 1 1
  0 0 1 1 0 0
  1 1 0 0 0 0]

[John D'Errico]

But since the result was to be random...

m=floor([0 0 0 0 0 0
0 0 0 0 1 1
0 0 1 1 0 0
1 1 0 0 0 0] + rand(4,6));

Seriously, if you want a better answer, you need to explain what you need. CLEARLY.

What do you mean when you say "the two columns to be the same"?

Next, you ask about a non-uniform bias. What does that mean? There are an uncountably infinite number of ways for something to be non-uniform.