Use P2 for calc_p_safe and optimization metric #190
Merged
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I've been thinking about acq catalog optimization and realizing (after the acq model update issues) that the current
p_safe
definition (as probability of 1 or fewer stars) is dominated by the few brightest stars and the "safety" stars can have little or no influence.Changing to "probability of 2 or fewer stars" makes the algorithm dig one star deeper. It also has the good feature of optimizing for exactly the metric that is used in catalog evaluation.
The regression diffs introduced here are not that substantial and in line with typical churn from other changes.