{"id":"W2970356107","doi":"10.1007/s12520-019-00922-4","title":"Phosphatic alteration of lead-rich glazes during two centuries of burial: Bartlam, Bonnin &amp; Morris, and Chelsea porcelain","year":2019,"lang":"en","type":"article","venue":"Archaeological and Anthropological Sciences","topic":"Cultural Heritage Materials Analysis","field":"Arts and Humanities","cited_by":5,"is_retracted":false,"has_abstract":false,"ca_institutions":"Laurentian University; Saint Mary's University","funders":"American Ceramic Circle","keywords":"Glaze; Mineralogy; Dissolution; Leaching (pedology); Geology; Weathering; Archaeology; Chemistry; Metallurgy; Geochemistry; Materials science; Ceramic; Soil water; 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":["sts","insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0003406786,0.0001532137,0.0004265786,0.00004822897,0.0003709205,0.00006538723,0.0001584711,0.00004995562,0.00371148],"category_scores_gemma":[0.00009515972,0.00008145207,0.00006040935,0.00007304967,0.008076569,0.0002073004,0.0002519034,0.00006856405,0.000007728875],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000006051856,"about_ca_system_score_gemma":0.000007539256,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001188743,"about_ca_topic_score_gemma":0.0006429789,"domain_scores_codex":[0.9986668,0.0001180052,0.0003750505,0.0003474943,0.0002363342,0.0002563653],"domain_scores_gemma":[0.9994763,0.0001523108,0.0001683967,0.00008746019,0.00005891095,0.00005659869],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"observational","study_design_scores_codex":[0.0002640416,0.0003573154,0.2407146,0.0004006703,0.00009004836,0.00001499898,0.02986692,0.0000760698,0.1543666,0.5697866,0.00005064087,0.004011462],"study_design_scores_gemma":[0.005530193,0.009216871,0.4306635,0.0006683537,0.000393822,0.0001029918,0.08604448,0.002640072,0.1976631,0.2551614,0.009138016,0.002777228],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.996008,0.001388266,0.000007429796,0.001116923,0.000148575,0.0001501977,0.00001569681,0.00002728166,0.001137564],"genre_scores_gemma":[0.9982488,0.0006491769,0.0004033481,0.00004790831,0.00009260335,0.000004870866,0.000006607705,0.000002750248,0.0005439942],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3146252,"threshold_uncertainty_score":0.9971992,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03482501789146863,"score_gpt":0.2757426611091103,"score_spread":0.2409176432176416,"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."}}