Unverified50% confidenceSolutionExact time
FaceRuler uses a logistic curve to map the weighted total score (0-100) onto the PSL 0-8 scale, with the function overallToPsl(overall) = 8 / (1 + exp(-(overall - 50) / 13)), anchored so that a total score of 50 corresponds exactly to PSL 4.0.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
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