{"id":"W4225657278","doi":"10.1257/mic.20190372","title":"Group Hug: Platform Competition with User Groups","year":2022,"lang":"en","type":"article","venue":"American Economic Journal Microeconomics","topic":"Digital Platforms and Economics","field":"Business, Management and Accounting","cited_by":18,"is_retracted":false,"has_abstract":true,"ca_institutions":"Kellogg's (Canada)","funders":"","keywords":"Dominance (genetics); Group (periodic table); Competition (biology); Quality (philosophy); Group buying; Business; Computer science; User group; Marketing; World Wide Web; Ecology","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":[0.002986788,0.001002792,0.001208717,0.001011239,0.003329079,0.004966567,0.002013631,0.003533527,0.02149774],"category_scores_gemma":[0.01333473,0.0004371642,0.001003623,0.001348877,0.003680208,0.005363599,0.003546613,0.002590711,0.0009470066],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002895707,"about_ca_system_score_gemma":0.001618123,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0077004,"about_ca_topic_score_gemma":0.007227585,"domain_scores_codex":[0.9975592,0.001171432,0.00004025382,0.000309541,0.0001895491,0.0007300535],"domain_scores_gemma":[0.9888494,0.00638009,0.001895358,0.0005905578,0.0004076837,0.001877001],"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":[0.002267728,0.002085024,0.03316751,0.000432395,0.0002998508,0.002326116,0.002467568,0.1697639,0.002682719,0.7324541,0.01373871,0.03831451],"study_design_scores_gemma":[0.001581014,0.002266459,0.01456056,0.0001356931,0.0002929436,0.0007410276,0.007647232,0.5399584,0.001194866,0.4116764,0.01973289,0.0002125568],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.8469468,0.0008179127,0.05954791,0.004317916,0.000274428,0.0006546566,0.0005537046,0.0002166131,0.0866701],"genre_scores_gemma":[0.9928613,0.0001070995,0.002721689,0.0001733866,0.00005744716,0.0001083559,0.00005880589,0.00001346353,0.003898524],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02149774,"threshold_uncertainty_score":0.07191718,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007172108015088702,"score_gpt":0.1731637376157417,"score_spread":0.165991629600653,"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."}}