{"id":"W2071327538","doi":"10.1016/s0377-2217(99)00274-x","title":"On the single-assignment p-hub center problem","year":2000,"lang":"en","type":"article","venue":"European Journal of Operational Research","topic":"Facility Location and Emergency Management","field":"Business, Management and Accounting","cited_by":168,"is_retracted":false,"has_abstract":false,"ca_institutions":"McGill University","funders":"","keywords":"Center (category theory); Computer science; Basis (linear algebra); Mathematical optimization; Mathematics","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":["insufficient_payload"],"consensus_categories":["insufficient_payload"],"category_scores_codex":[0.004869879,0.00009295376,0.00008235325,0.000205311,0.0003502837,0.0004756998,0.0004795333,0.000009287898,0.01501001],"category_scores_gemma":[0.0002246444,0.00005781454,0.00007125874,0.0003269836,0.00007867657,0.0004908847,0.00008631007,0.0003237709,0.005045709],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00006302055,"about_ca_system_score_gemma":0.00003048915,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00001776259,"about_ca_topic_score_gemma":0.000009538967,"domain_scores_codex":[0.9977631,0.0002575428,0.0004171073,0.0001390409,0.001191986,0.0002312329],"domain_scores_gemma":[0.9991217,0.0000627164,0.0000432264,0.0001810209,0.000568371,0.00002291088],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"not_applicable","study_design_gemma":"not_applicable","study_design_scores_codex":[0.0003863541,0.001235895,0.0003401283,0.00005516653,0.000101865,0.0001072871,0.0002676705,0.02492322,0.001042415,0.213738,0.6835029,0.07429914],"study_design_scores_gemma":[0.0006077159,0.0001447848,0.004915562,0.00008480882,0.000006279996,0.000007072596,0.0001845328,0.002116491,0.00004857041,0.001132818,0.990638,0.0001133201],"study_design_candidate":"not_applicable","study_design_consensus":"not_applicable","genre_codex":"other","genre_gemma":"empirical","genre_scores_codex":[0.310053,0.00004688727,0.0003556721,0.04922286,0.0002448704,0.0003464225,0.000002175643,0.00001583331,0.6397123],"genre_scores_gemma":[0.9876984,0.00002810648,0.0001067813,0.003297929,0.0007998793,0.000003910099,0.000007208012,0.00001609632,0.008041627],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.6776455,"threshold_uncertainty_score":0.995729,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.1222070768181107,"score_gpt":0.3048564898713042,"score_spread":0.1826494130531935,"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."}}