{"id":"W4413941528","doi":"10.1007/s11457-025-09472-4","title":"The Archaeological Signature of Frontier Recycling: Evidence of the First Boiler of the Ss Beaver, the First Working Steamship on the Pacific Coast of North America","year":2025,"lang":"en","type":"article","venue":"Journal of Maritime Archaeology","topic":"Archaeology and ancient environmental studies","field":"Earth and Planetary Sciences","cited_by":1,"is_retracted":false,"has_abstract":false,"ca_institutions":"Simon Fraser University","funders":"","keywords":"Beaver; Frontier; Archaeology; Geography; History; Oceanography; Geology; Paleontology","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"],"consensus_categories":[],"category_scores_codex":[0.001391835,0.000193621,0.0004938136,0.00006094137,0.0006885901,0.000003113083,0.001748311,0.0001177748,0.00012466],"category_scores_gemma":[0.0007415797,0.00007057966,0.000362383,0.0004049088,0.01028134,0.00005334761,0.0007027577,0.0009640154,0.000002101252],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00001156633,"about_ca_system_score_gemma":0.00007423234,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0002573748,"about_ca_topic_score_gemma":0.004812434,"domain_scores_codex":[0.9974121,0.0007394515,0.0007953402,0.0001930999,0.0005079272,0.0003520806],"domain_scores_gemma":[0.9925837,0.005701918,0.001103334,0.0004869269,0.00008880965,0.00003530055],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0005759765,0.00004867642,0.9848596,0.00003204396,0.0001696143,0.000004059828,0.003106723,0.002217263,0.00001012008,0.0004328437,0.001076823,0.007466225],"study_design_scores_gemma":[0.0002269079,0.000450593,0.9760827,0.0003590054,0.00007772529,0.00002332734,0.001738354,0.000207893,0.0002060323,0.005116237,0.01544155,0.00006962389],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.951835,0.008541875,0.00008492659,0.03771795,0.0008405672,0.0003235165,0.00003095106,0.000002664863,0.0006225132],"genre_scores_gemma":[0.9955268,0.003125385,0.00009832219,0.0008349781,0.00006426647,0.00000266982,0.000001170704,0.000003608262,0.0003427812],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.04369178,"threshold_uncertainty_score":0.9924121,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01588255341893271,"score_gpt":0.2062063672483481,"score_spread":0.1903238138294154,"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."}}