{"id":"W3003100884","doi":"10.1017/rdc.2019.157","title":"Pressure Knapping and the Timing of Innovation: New Chrono-Cultural Data on Prehistoric Groups of the Early Holocene in the Maghreb, Northwest Africa","year":2020,"lang":"en","type":"article","venue":"Radiocarbon","topic":"African Studies and Geopolitics","field":"Social Sciences","cited_by":30,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo","funders":"","keywords":"Radiocarbon dating; Knapping; Holocene; Mesolithic; Prehistory; Chronology; Archaeology; Lithic technology; Stone tool; Geography; Period (music)","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":[0.001052019,0.0002486539,0.0001652993,0.004899704,0.0006160578,0.0006319721,0.0002678991,0.00016323,0.001299873],"category_scores_gemma":[0.002919981,0.0001430003,0.0000934962,0.004362192,0.000605875,0.0006453337,0.0006263201,0.0002176772,0.0001549349],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0005550542,"about_ca_system_score_gemma":0.000317885,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0215103,"about_ca_topic_score_gemma":0.07313218,"domain_scores_codex":[0.9997217,0.00007744059,0.00003579855,0.00005333949,0.00005150308,0.00006021298],"domain_scores_gemma":[0.9980032,0.0004533799,0.0008986037,0.0001378786,0.0004128603,0.00009414784],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002550954,0.00003470771,0.9166505,0.0001541566,0.00005264964,0.000325559,0.02283146,0.000201224,0.003422053,0.0006599911,0.0003255948,0.05508699],"study_design_scores_gemma":[0.000001536516,0.00001758667,0.9945437,0.00003385558,0.000007409299,0.00008206028,0.002286295,0.00005703987,0.0002859448,0.00004869925,0.00263256,0.000003356277],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9971364,0.0006886804,0.0001844391,0.00001786573,0.000004042054,0.000010901,0.0005116784,0.00000181452,0.001444231],"genre_scores_gemma":[0.9983999,0.0004257798,0.0005720157,0.000004588484,0.000007606867,0.00001629094,0.00033444,0.000002509074,0.0002368872],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.0215103,"threshold_uncertainty_score":0.04277021,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0707540700633358,"score_gpt":0.2846187729526233,"score_spread":0.2138647028892875,"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."}}