Problems when moving plb & pub

[ajlahwh]

Hello,

I guess there might be some potential problems when moving plb & pub.

The initialization of one parameter in my model:
lb: 6.14421235e-06
ub: 1.62754791e+05
plb: 0.04978707
pub: 20.08553692
X0: 10.067662

It then says: bads:InitialPointsTooClosePB: The starting points X0 are on or numerically too close to the hard bounds lb and ub. Moving the initial points more inside...

Now the value becomes:
X0: 162.75479756

It then says: bads:TooCloseBounds: For each variable, hard and plausible bounds should not be too close. Moving plausible bounds.

Now the value becomes:
LB_eff: 1.62754798e+02
UB_eff: 1.62592037e+05
plb: 1.62754798e+02
pub: 20.08553692

It then says: bads:InitialPointsOutsidePB. The starting points X0 are not inside the provided plausible bounds plb and pub. Expanding the plausible bounds...
ValueError: bads:StrictBounds: For each variable, hard and
plausible bounds should respect the ordering lb <= plb < pub <= ub.

Your help is greatly appreciated. Thanks!

[lacerbi]

Thanks, I will look into this at some point. However, as a basic recommendation, it seems that your variables would be best specified in log scale, as they span 11 orders of magnitude (!), from 10^-6 to 10^5. This is almost surely what's causing the issue here.

[ajlahwh]

Thanks, I will look into this at some point. However, as a basic recommendation, it seems that your variables would be best specified in log scale, as they span 11 orders of magnitude (!), from 10^-6 to 10^5. This is almost surely what's causing the issue here.

Okay, I see. Thank you for the recommendation!