{"id":"W2160851725","doi":"10.1111/j.1468-2354.2011.00636.x","title":"TRANSPORTATION COSTS, AGRICULTURAL PRODUCTIVITY, AND CROSS‐COUNTRY INCOME DIFFERENCES*","year":2011,"lang":"en","type":"article","venue":"International Economic Review","topic":"Fiscal Policy and Economic Growth","field":"Economics, Econometrics and Finance","cited_by":117,"is_retracted":false,"has_abstract":true,"ca_institutions":"York University","funders":"","keywords":"Productivity; Agriculture; Arable land; Agricultural productivity; Natural resource economics; Economics; Agricultural economics; Production (economics); Business; Economic growth; Geography; Macroeconomics","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":[0.0008843868,0.0004446367,0.0003285244,0.001582355,0.0003399158,0.001210787,0.0003570499,0.0004884548,0.005946265],"category_scores_gemma":[0.003723753,0.0001307278,0.0007523775,0.002536886,0.0006287867,0.001182768,0.0007576719,0.000841254,0.0004130762],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00142239,"about_ca_system_score_gemma":0.000587508,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01222804,"about_ca_topic_score_gemma":0.009280382,"domain_scores_codex":[0.9997579,0.00008943756,0.00001411234,0.00003044597,0.00003070279,0.00007741526],"domain_scores_gemma":[0.9964516,0.001889547,0.001216326,0.0001210496,0.0001836215,0.0001377421],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0003918737,0.0003168703,0.5811254,0.0003834138,0.0009421936,0.0007973056,0.0003961324,0.09417657,0.000523104,0.2383667,0.008544653,0.07403579],"study_design_scores_gemma":[0.0001011172,0.0003808841,0.6477081,0.000396262,0.0008852574,0.0006469835,0.001902628,0.1245464,0.001617726,0.1886321,0.03307353,0.0001091017],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.919157,0.01395441,0.01702922,0.005957949,0.0001735042,0.00007367215,0.002086799,0.00004274745,0.04152473],"genre_scores_gemma":[0.9908621,0.0044189,0.0009800546,0.00010764,0.00007367408,0.0000303963,0.0004210745,0.000005655825,0.003100432],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01222804,"threshold_uncertainty_score":0.02431375,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.04200094811382708,"score_gpt":0.249657748591515,"score_spread":0.207656800477688,"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."}}