{"id":"W7098717529","doi":"","title":"is given to the source. Matching and Challenge Gifts to Charity:Evidence from Laboratory and Natural Field Experiments","year":2008,"lang":"en","type":"article","venue":"","topic":"Libraries and Information Services","field":"Arts and Humanities","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Field (mathematics); Matching (statistics); Club; Hospitality","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.003251729,0.0003301955,0.0005889068,0.001466745,0.002139376,0.002204038,0.0008442216,0.001464035,0.400191],"category_scores_gemma":[0.02605502,0.0002593877,0.0002768578,0.002174241,0.0005853307,0.002031581,0.002812186,0.001101016,0.1370303],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009594786,"about_ca_system_score_gemma":0.001211874,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01569033,"about_ca_topic_score_gemma":0.01802574,"domain_scores_codex":[0.9987177,0.0004568737,0.00009130915,0.0001558525,0.0004639919,0.0001142993],"domain_scores_gemma":[0.9785637,0.008609741,0.001791156,0.00431048,0.004026501,0.002698454],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"not_applicable","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.001194681,0.000507351,0.02222084,0.0003566885,0.00003675268,0.0003826718,0.002649635,0.0002565985,0.0008714887,0.00914871,0.761524,0.2008507],"study_design_scores_gemma":[0.000408182,0.000312592,0.06420644,0.000638426,0.00006060855,0.0007215839,0.006651236,0.001385691,0.001750195,0.01350273,0.9102693,0.00009296915],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"other","genre_gemma":"empirical","genre_scores_codex":[0.1112797,0.001553252,0.006492869,0.03560109,0.00455322,0.001152845,0.1064437,0.003813175,0.7291102],"genre_scores_gemma":[0.4478201,0.002087454,0.007717367,0.005225556,0.0004827853,0.001535561,0.04014725,0.001804916,0.493179],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.400191,"threshold_uncertainty_score":0.8555548,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.05542938075299859,"score_gpt":0.2486378786366366,"score_spread":0.193208497883638,"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."}}