{"id":"W1923242923","doi":"10.1017/s0033822200041424","title":"Can We Use Cosmogenic Isotopes to Date Stone Artifacts?","year":2001,"lang":"en","type":"article","venue":"Radiocarbon","topic":"Geology and Paleoclimatology Research","field":"Earth and Planetary Sciences","cited_by":15,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of British Columbia; Institute of Particle Physics","funders":"","keywords":"Acheulean; Radiocarbon dating; Geology; Archaeology; Paleontology; Pleistocene; Geography","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":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":["insufficient_payload"],"category_scores_codex":[0.000271164,0.0001450118,0.0002155249,0.0001504124,0.0001653091,0.00004546557,0.0002728875,0.0001221724,0.001964077],"category_scores_gemma":[0.00008724332,0.0001250706,0.00004876962,0.0003414327,0.0001295203,0.0001194938,0.000018305,0.0002351161,0.001811135],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000001656661,"about_ca_system_score_gemma":0.00005418677,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001716564,"about_ca_topic_score_gemma":0.01776815,"domain_scores_codex":[0.99854,0.0001702384,0.0001735573,0.0003312872,0.0001897042,0.0005952204],"domain_scores_gemma":[0.9990983,0.0002167774,0.00003287414,0.0003273195,0.00002673827,0.000297973],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0000942544,0.00001215113,0.9943073,0.000004825237,0.00002542319,0.0001932465,0.0001750081,0.0003890285,0.00004405618,0.00005582384,0.0006070854,0.004091827],"study_design_scores_gemma":[0.0002606615,0.0001921824,0.9699396,0.00001138189,0.00001540299,0.0002900953,0.00005155558,0.001518983,0.0002369437,0.0005244924,0.02675794,0.0002006922],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9856595,0.0007658358,0.00001432337,0.00661351,0.0002762954,0.0002234822,0.00002009385,0.00006013341,0.006366819],"genre_scores_gemma":[0.995933,0.0004898977,0.0002750652,0.0008171381,0.00007408794,0.000003132443,0.00007676745,0.000004264562,0.00232664],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02615085,"threshold_uncertainty_score":0.9989661,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03482341866864348,"score_gpt":0.2542749202531643,"score_spread":0.2194515015845209,"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."}}