{"id":"W7119166264","doi":"10.17169/refubium-50690","title":"Overcoming the Challenge of Confident Identification Among Two Related Groups of 17-Methyl Steroids by GC–MS","year":2025,"lang":"en","type":"article","venue":"Refubium (Universitätsbibliothek der Freien Universität Berlin)","topic":"Hormonal and reproductive studies","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"World Anti-Doping Agency","keywords":"Diastereomer; Mass spectrometry; Tandem mass spectrometry; Chromatographic separation; Identification (biology); Retention time; Methyltestosterone","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0005870554,0.0003144745,0.000723986,0.002045799,0.0003643157,0.00002284133,0.0005557415,0.0001907358,0.0002028169],"category_scores_gemma":[0.00006427055,0.0002605488,0.0003344351,0.003769541,0.0009662145,0.001237778,0.0003863931,0.0004378416,0.00001480684],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002431534,"about_ca_system_score_gemma":0.0001466656,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000590024,"about_ca_topic_score_gemma":0.0001009944,"domain_scores_codex":[0.9977003,0.0001825194,0.0005298328,0.0006610121,0.0005605013,0.0003658212],"domain_scores_gemma":[0.9976285,0.0002243641,0.0005170971,0.0008816943,0.0006302018,0.0001181927],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"observational","study_design_scores_codex":[0.004485626,0.004010949,0.06905045,0.002439289,0.02109554,0.000434152,0.04480859,0.000552483,0.494234,0.2756092,0.06695649,0.01632324],"study_design_scores_gemma":[0.03999778,0.003291951,0.4432356,0.00379074,0.01630558,0.0001138306,0.1803893,0.00291229,0.1207625,0.01515301,0.1708185,0.003228881],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9193597,0.004948702,0.00227647,0.004525366,0.0004869229,0.0009255082,0.00008663077,0.00009482031,0.06729581],"genre_scores_gemma":[0.9726353,0.001215894,0.0001167058,0.00004474877,0.00006151983,0.000002057312,0.00006583019,0.00002434488,0.02583357],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3741852,"threshold_uncertainty_score":0.9999847,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01039701058639468,"score_gpt":0.2536982928449358,"score_spread":0.2433012822585411,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}