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Results tagged with randomness
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user 2205
Randomness is a way to mathematically model uncertainty. We often assume to have access to some well-defined source of random numbers, or that input values or events follow some probability distribution.
3
votes
Accepted
Stochastical algorithm
If $n$ is a power of two, then you can simply determine the value $i$ by determine bit per bit in the binary representation. So if $n=8$ then you ask your source 3 times. Suppose you get as result $1, …
- 12.3k
10
votes
Random sampling in a polygon
Triangulate the polygon
Determine in which of the triangles the point should lie (weights triangle areas)
Sample the point in the triangle as explained in this post
- 12.3k
37
votes
Accepted
Uniform sampling from a simplex
Let us first assume that you want to sample within
x + y + z = 1
0 ≤ x ≤ 1
0 ≤ y ≤ 1
0 ≤ z ≤ 1
This doesn't make quite a difference, since the sample point will still lie in your requested area wit …
- 12.3k