{"id":"W2154326504","doi":"10.1287/opre.1120.1041","title":"Fixed-Charge Transportation Problem: Facets of the Projection Polyhedron","year":2012,"lang":"en","type":"article","venue":"Operations Research","topic":"Optimization and Mathematical Programming","field":"Engineering","cited_by":21,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Windsor","funders":"","keywords":"Polyhedron; Heuristics; Fixed charge; Projection (relational algebra); Facet (psychology); Variable (mathematics); Mathematical optimization; Fixed cost; Computer science; Space (punctuation); Transportation theory; Facility location problem; Charge (physics); Unit (ring theory); Fixed point; Mathematics; Combinatorics; Algorithm; Physics; Mathematical analysis","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":[0.0006448434,0.0007220649,0.0008860506,0.0003774335,0.0008257893,0.002349089,0.001158481,0.00110557,0.006248616],"category_scores_gemma":[0.002286062,0.0003590928,0.001024857,0.001097503,0.001152119,0.002598757,0.001287997,0.001509713,0.0004982541],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009524117,"about_ca_system_score_gemma":0.001599798,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.004767458,"about_ca_topic_score_gemma":0.002676659,"domain_scores_codex":[0.9992679,0.0002104276,0.0000285013,0.0001328789,0.0002207396,0.0001396686],"domain_scores_gemma":[0.9993981,0.0002671627,0.00006740759,0.00006836158,0.0001050314,0.00009381269],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0003057191,0.0002590616,0.002657754,0.0004128944,0.00006772781,0.0008989784,0.0003650067,0.4451757,0.004855097,0.4551166,0.007512758,0.08237268],"study_design_scores_gemma":[0.00006545331,0.0001322338,0.0009325146,0.00005652792,0.00002214317,0.0004722577,0.0003511721,0.6948493,0.002806133,0.2920709,0.008206148,0.00003515814],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"methods","genre_gemma":"methods","genre_scores_codex":[0.1255557,0.0004796015,0.8501697,0.0007756599,0.00009954552,0.0003341273,0.0007327336,0.0001721221,0.02168086],"genre_scores_gemma":[0.7607854,0.0009631224,0.226413,0.000151159,0.0001077012,0.0004196064,0.001190115,0.00009665056,0.009873101],"genre_candidate":"methods","genre_consensus":"methods","teacher_disagreement_score":0.006248616,"threshold_uncertainty_score":0.02090371,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.05916643006389415,"score_gpt":0.3412065012197392,"score_spread":0.2820400711558451,"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."}}