Dear R users,

I have a question about optimization. Is that possible set a constraint that
only integer values are allowed for the optim in the R base and some other
optimizers such as psoptim in the package pso? For instance, my lower bound
is 0 and upper bound is 100 and I only want integer from 0 to 100. Is this
possible? Thank you very much for any help in advance.

with kind regards,

Chun

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