[Please refer to https://issues.apache.org/jira/browse/MATH-519 for the context of this discussion.]
Hi Luc. > Anyway, returning NaN or POSITIVE_INFINITY would work only with some > optimizers. Do you mean that it would fail with some optimization _algorithms_ or some unsafe _implementations_ of those algorithms? In the former case, would "Double.MAX_VALUE" be OK? In the latter, wouldn't there be a way to make the implementations behave correctly in the face of those "special" values? > For simple bounds on estimated parameters, this can be done using > intermediate variables and mapping functions, [...] Yes, but that would be slightly less efficient (because of additional function calls). If this is the best choice, I'll implement a "conversion" class (for the "simple" bound case). Best, Gilles --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
