{"id":"W2085667665","doi":"10.1006/game.2000.0836","title":"Cooperation, Secret Handshakes, and Imitation in the Prisoners' Dilemma","year":2001,"lang":"en","type":"article","venue":"Games and Economic Behavior","topic":"Game Theory and Applications","field":"Decision Sciences","cited_by":18,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of British Columbia","funders":"","keywords":"Handshake; Dilemma; Prisoner's dilemma; Imitation; Stochastic game; Mathematical economics; Superrationality; Repeated game; Limit (mathematics); Computer science; Adversary; SIGNAL (programming language); Microeconomics; Game theory; Economics; Computer security; Mathematics; Psychology; Social psychology; Telecommunications","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":[],"consensus_categories":[],"category_scores_codex":[0.0009274419,0.00006805141,0.0001071242,0.00005998254,0.0001303249,0.0002821769,0.0001562847,0.00003790289,0.0002261224],"category_scores_gemma":[0.0000539906,0.00004535502,0.00001831954,0.00008723195,0.00008835475,0.0002333927,0.00002169717,0.00006106225,0.00007508548],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00001052266,"about_ca_system_score_gemma":0.00001457911,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0000640432,"about_ca_topic_score_gemma":0.0004314381,"domain_scores_codex":[0.9992713,0.00006624508,0.00026493,0.0002318174,0.00006226634,0.0001034887],"domain_scores_gemma":[0.9994135,0.0002496466,0.00006644584,0.0002107738,0.0000213174,0.00003835213],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00004550295,0.0001210278,0.6245688,0.000002248996,0.000005458223,0.000006388448,0.007448201,0.0001833233,0.0006111491,0.06846792,0.004592675,0.2939473],"study_design_scores_gemma":[0.0004876117,0.0000451437,0.9189312,0.000004276793,0.00001811875,0.00006263689,0.004310424,0.001362491,0.00004999282,0.006898734,0.06769202,0.000137343],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9968814,0.0001061843,0.0002023599,0.001529928,0.00004544195,0.0002073677,0.00001365734,0.000007705298,0.001005928],"genre_scores_gemma":[0.9988837,0.00008215944,0.00007855228,0.0002059666,0.00003808969,0.00009290952,0.000008557661,0.00000352394,0.0006065231],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2943624,"threshold_uncertainty_score":0.2721038,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.08203987794972302,"score_gpt":0.3517487822863533,"score_spread":0.2697089043366303,"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."}}