{"id":"spo2-hoffman-ratio-20261005","feature_version":"rgb-acdc-rescnn-v1","kind":"ratio_ridge","fps":30,"frames":180,"window_seconds":6,"feature_indices":[3,4,5],"feature_mean":[-0.4771336602658205,-0.09265875892268384,0.3844749016098608],"feature_scale":[0.29991535922229356,0.2391883191368285,0.13463146077801105],"coefficients":[-0.42714723944664,1.1096757650375366,2.9225053787231445],"intercept":88.44217681884766,"feature_min":[-1.6959656476974487,-1.3182737827301025,-0.05299795791506767],"feature_max":[0.7079418301582336,1.2308813333511353,0.9324684143066406],"benchmark":{"n":1908,"mae":6.377495727699008,"rmse":7.811522276891041,"bias":-0.19684657210823875,"absolute_error_p90":13.03925628662109},"macro_mae":6.385405507799294,"participants":6,"phone_validated":false,"source":"https://github.com/ubicomplab/oximetry-phone-cam-data","license":"MIT; see hoffman-LICENSE.txt","selection":"Ratio regression chosen after comparing these same six outer-fold results; comparison is exploratory and there is no untouched final test cohort."}