{"id":"W2047414807","doi":"10.1016/j.orggeochem.2004.01.010","title":"Variable alteration in heavy crude oils of west-central Saskatchewan, Canada","year":2004,"lang":"en","type":"article","venue":"Organic Geochemistry","topic":"Hydrocarbon exploration and reservoir analysis","field":"Engineering","cited_by":13,"is_retracted":false,"has_abstract":false,"ca_institutions":"Geological Survey of Canada","funders":"","keywords":"Alkane; Biodegradation; Chemistry; Hydrocarbon; Toluene; Gasoline; Environmental chemistry; Benzene; Relative species abundance; Sterane; Composition (language); Pristane; Hopanoids; Geology; Organic chemistry; Source rock; Abundance (ecology); Ecology; Paleontology; Biology","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.00005009596,0.0001105094,0.0001647489,0.00002789355,0.00001990904,0.00001312454,0.0001103019,0.00007862815,0.0005199951],"category_scores_gemma":[0.00002336235,0.0001204576,0.0000271185,0.0003075573,0.00001182709,0.00006319051,0.00001357948,0.000132902,0.000004869],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003034076,"about_ca_system_score_gemma":0.0005517827,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.06406846,"about_ca_topic_score_gemma":0.4300306,"domain_scores_codex":[0.9992232,0.00000661692,0.0002563272,0.0001252893,0.0001650415,0.0002234953],"domain_scores_gemma":[0.9996512,0.000008843219,0.00002935421,0.0001934818,0.00002955043,0.00008757126],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00000290188,0.00002979328,0.0004645587,0.00008254303,0.0000281905,0.00001050342,0.0003484528,0.1219896,0.8766125,0.00001323577,0.0003855441,0.00003216317],"study_design_scores_gemma":[0.0003907781,0.000003891821,0.0002445658,0.00003406675,0.00001249299,0.000004455538,0.000592279,0.00382759,0.9944094,0.0001107917,0.0002346314,0.0001350799],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9933269,0.0001552282,0.004502409,0.0002215453,0.0000986193,0.00004325998,0.00001179224,0.00004959832,0.00159062],"genre_scores_gemma":[0.9991273,0.00001504587,0.0005514209,0.00003360284,0.00005137686,0.00000458629,0.00006154424,0.00001516568,0.0001399392],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3659621,"threshold_uncertainty_score":0.942164,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.003053943818700176,"score_gpt":0.1654536098130839,"score_spread":0.1623996659943838,"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."}}