{"id":"W2099640515","doi":"10.1126/science.1101456","title":"The Evolutionary Origin of Cooperators and Defectors","year":2004,"lang":"en","type":"article","venue":"Science","topic":"Evolutionary Game Theory and Cooperation","field":"Social Sciences","cited_by":345,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of British Columbia","funders":"","keywords":"Diversification (marketing strategy); Economics; Evolutionary dynamics; Evolutionary game theory; Microeconomics; Investment (military); Game theory; Business; Population","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":[0.001643517,0.000206212,0.0003871713,0.0005998442,0.0006955313,0.001621078,0.000793289,0.001169589,0.001072652],"category_scores_gemma":[0.004812787,0.0002337874,0.0002697468,0.0003012062,0.002244167,0.001988692,0.001085789,0.0009521128,0.0001527441],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0008793611,"about_ca_system_score_gemma":0.000482118,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0009645049,"about_ca_topic_score_gemma":0.0008427235,"domain_scores_codex":[0.9994314,0.0002129736,0.00003135982,0.0001309329,0.00008992664,0.0001034015],"domain_scores_gemma":[0.9980261,0.0007754749,0.0003588156,0.0002725773,0.0002737622,0.0002932723],"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":[0.0001958574,0.00009511349,0.03981191,0.0001132443,0.00009908432,0.0009578775,0.003237236,0.01666409,0.0172871,0.8718075,0.00146349,0.04826751],"study_design_scores_gemma":[0.00008009907,0.0001867939,0.03380539,0.0001085637,0.000078088,0.001679904,0.002619109,0.09177293,0.003827632,0.8540208,0.01173573,0.00008491785],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9575779,0.0005916269,0.02731525,0.001113297,0.00002148267,0.00002120717,0.00004705034,0.00003736538,0.01327477],"genre_scores_gemma":[0.9938536,0.0001897994,0.0041803,0.0000625132,0.000006594513,0.00001178441,0.00002202521,0.000008345521,0.001664915],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001643517,"threshold_uncertainty_score":0.008691907,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01202305453107174,"score_gpt":0.2954390865305217,"score_spread":0.28341603199945,"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."}}