Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


Math Forum
»
Discussions
»
Software
»
comp.softsys.matlab
Notice: We are no longer accepting new posts, but the forums will continue to be readable.
Topic:
Simulation of 5 Random Variables with Sum Constraint
Replies:
8
Last Post:
Apr 3, 2013 3:05 AM




Re: Simulation of 5 Random Variables with Sum Constraint
Posted:
Mar 28, 2013 10:50 AM


"Siddhartha " <siddhsam@hotmail.com> wrote in message news:kj05fc$1q1$1@newscl01ah.mathworks.com... > Thank you! This is awesome. > > > But I also foresee that this problem will extend for me to 20 variables.
I would process the variables in decreasing order of maximum value, and stop processing when you know that none of the possible combinations of values for the remaining variables can satisfy your sum constraint. That should allow you to cut out significant chunks of the combination space.
> Also, we may eventually get enough information to model the random numbers > as continuous.
That's different; I believe there are some submissions on the File Exchange for this case. Take a look at RANDFIXEDSUM.
http://www.mathworks.com/matlabcentral/fileexchange/9700randomvectorswithfixedsum
 Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com



