{"id":"W2073562922","doi":"10.1038/nature12426","title":"Atmospheric oxygenation three billion years ago","year":2013,"lang":"en","type":"article","venue":"Nature","topic":"Geochemistry and Elemental Analysis","field":"Earth and Planetary Sciences","cited_by":641,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of British Columbia","funders":"","keywords":"Billion years; Oxygenation; Astrobiology; Environmental science; Astronomy; Physics; Medicine; Internal medicine","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.000302374,0.0002800069,0.0001642359,0.0003359716,0.0009421217,0.0009220497,0.0001651517,0.0006139401,0.004708634],"category_scores_gemma":[0.0007457361,0.0001285245,0.0001834418,0.000773612,0.0005628421,0.0007631483,0.001077135,0.0009426812,0.001481207],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001235993,"about_ca_system_score_gemma":0.0007653933,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01082918,"about_ca_topic_score_gemma":0.0171194,"domain_scores_codex":[0.9998496,0.000009643204,0.000006047052,0.00005860001,0.00004860345,0.0000275122],"domain_scores_gemma":[0.9997945,0.00001307798,0.00003493992,0.00004194383,0.00008353595,0.00003202399],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"observational","study_design_scores_codex":[0.001632762,0.0001425688,0.3023243,0.001017794,0.0006993425,0.002681151,0.00282193,0.001893703,0.1960348,0.09246783,0.0649209,0.3333629],"study_design_scores_gemma":[0.0000246259,0.00006449153,0.2432915,0.00009847429,0.0001288428,0.0007357066,0.0005761893,0.0003619053,0.01653171,0.01058687,0.7275749,0.0000247298],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7539705,0.0229327,0.009168047,0.01982333,0.006640976,0.00006102112,0.01362386,0.001008658,0.1727709],"genre_scores_gemma":[0.9166507,0.009403565,0.002944247,0.002516743,0.00122462,0.00002413522,0.005888076,0.0001445441,0.06120328],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01082918,"threshold_uncertainty_score":0.0215323,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.003755212980384957,"score_gpt":0.1775249878185611,"score_spread":0.1737697748381762,"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."}}