{"id":"W2884833553","doi":"10.1007/s00710-018-0620-9","title":"Estimation of commercial diamond grades based on microdiamonds: a case study of the Koidu diamond mine, Sierra Leone","year":2018,"lang":"en","type":"article","venue":"Mineralogy and Petrology","topic":"African Studies and Geopolitics","field":"Social Sciences","cited_by":5,"is_retracted":false,"has_abstract":false,"ca_institutions":"Hudbay Minerals (Canada)","funders":"","keywords":"Sierra leone; Diamond; Geology; Geochemistry; Mining engineering; Mineralogy; Metallurgy; Materials science; Economics; Socioeconomics","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":[0.001051078,0.0004434363,0.0003434028,0.002185914,0.000542821,0.001066949,0.0008210423,0.0006874013,0.0005320596],"category_scores_gemma":[0.002937583,0.0003149453,0.0003498809,0.001774016,0.0004781185,0.0005055392,0.0005501253,0.0003355353,0.00009684361],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001229097,"about_ca_system_score_gemma":0.000770052,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.1195174,"about_ca_topic_score_gemma":0.1755731,"domain_scores_codex":[0.9994389,0.0001964056,0.00003650637,0.00008335728,0.0001514149,0.00009339544],"domain_scores_gemma":[0.9982269,0.001009928,0.0002239254,0.00008283416,0.0003911004,0.00006517992],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002231184,0.0003367203,0.9344989,0.0001653592,0.0001356626,0.004730327,0.003376553,0.01739063,0.003540566,0.001281675,0.0002562485,0.0340642],"study_design_scores_gemma":[0.00003322232,0.0003279185,0.829608,0.0001551547,0.0001625429,0.0009829159,0.02748498,0.1301549,0.006595744,0.001361461,0.003079797,0.00005351796],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.998577,0.00008415358,0.0005438281,0.0000295386,6.646077e-7,0.00001932026,0.00008416169,0.000003639203,0.0006576985],"genre_scores_gemma":[0.9981646,0.0000836482,0.001347079,0.000002127629,6.89329e-7,0.000005710257,0.00008848611,0.000001787463,0.0003058525],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1195174,"threshold_uncertainty_score":0.2376435,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0232236442327466,"score_gpt":0.3031409502655743,"score_spread":0.2799173060328277,"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."}}