{"id":"W1978843101","doi":"10.1080/14926150902908776","title":"Journey to the Past: Verifying and Modifying the Conceptual Sources of Decimal Fraction Knowledge","year":2009,"lang":"en","type":"article","venue":"Canadian Journal of Science Mathematics and Technology Education","topic":"History and Theory of Mathematics","field":"Mathematics","cited_by":12,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"","keywords":"Decimal; Fraction (chemistry); Computer science; Arithmetic; Mathematics; Chemistry; Chromatography","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.007924371,0.0004783967,0.0005804913,0.002279293,0.00343965,0.0086061,0.00256731,0.001787891,0.008137231],"category_scores_gemma":[0.06463812,0.0005944644,0.0007511443,0.002194846,0.01179109,0.03206087,0.005709677,0.002734496,0.0007790984],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.004097202,"about_ca_system_score_gemma":0.004966473,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01034008,"about_ca_topic_score_gemma":0.008777873,"domain_scores_codex":[0.996371,0.001605693,0.0002789835,0.0008513707,0.0006686199,0.0002243426],"domain_scores_gemma":[0.9657268,0.01304622,0.002023816,0.01395262,0.004662664,0.0005878876],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"qualitative","study_design_scores_codex":[0.0001636262,0.00004902305,0.005395473,0.0001380883,0.00002264568,0.0002604137,0.04411505,0.001415942,0.0008976082,0.8826618,0.001394661,0.06348572],"study_design_scores_gemma":[0.00002916042,0.00004920393,0.001895134,0.0002102504,0.00007107753,0.0003347635,0.01931556,0.008156657,0.003999204,0.9168342,0.04904579,0.00005908166],"study_design_candidate":"qualitative","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.503759,0.001871598,0.333473,0.01237869,0.0005234843,0.0001688275,0.0006865818,0.0009388045,0.1462001],"genre_scores_gemma":[0.9472032,0.0003329116,0.04871187,0.0001604809,0.00002561858,0.00002374138,0.0002130353,0.0002052558,0.003123833],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01034008,"threshold_uncertainty_score":0.04190862,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.04513947947590036,"score_gpt":0.3091379904268606,"score_spread":0.2639985109509602,"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."}}