{"id":"W47192650","doi":"10.5591/978-1-57735-516-8/ijcai11-447","title":"Recommender systems: missing data and statistical model estimation","year":2011,"lang":"en","type":"article","venue":"","topic":"Recommender Systems and Techniques","field":"Computer Science","cited_by":69,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto; University of British Columbia","funders":"","keywords":"Recommender system; Computer science; Ranking (information retrieval); Missing data; Statistical model; Data mining; Information retrieval; Data modeling; Machine learning; Collaborative filtering; Artificial intelligence; Database","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":[0.03593069,0.001630863,0.004397198,0.002157327,0.001198448,0.003950691,0.005154569,0.004328178,0.002344256],"category_scores_gemma":[0.1405503,0.002256591,0.002170245,0.003844729,0.002122945,0.00770215,0.002592276,0.006161936,0.001128791],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001958202,"about_ca_system_score_gemma":0.002344253,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.008794118,"about_ca_topic_score_gemma":0.006575257,"domain_scores_codex":[0.9782938,0.01482896,0.0008966764,0.002419946,0.003153225,0.0004073783],"domain_scores_gemma":[0.8488288,0.1256669,0.004932426,0.01313742,0.006719329,0.0007151266],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"simulation_or_modeling","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0003590641,0.0002723531,0.01473738,0.001059265,0.00108964,0.0004383512,0.0005853549,0.65079,0.0009501334,0.1718608,0.008394823,0.1494628],"study_design_scores_gemma":[0.0000547248,0.00008634778,0.001304324,0.0001103976,0.00008604986,0.0001718392,0.00004812018,0.8816135,0.0004302828,0.113951,0.002087688,0.00005573304],"study_design_candidate":"simulation_or_modeling","study_design_consensus":"simulation_or_modeling","genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.005810992,0.001901685,0.9896825,0.001207566,0.00009235382,0.0000578988,0.0004398173,0.0003659058,0.0004413919],"genre_scores_gemma":[0.4297538,0.005318393,0.5567771,0.0008027477,0.001125878,0.0007052825,0.003094615,0.0001847651,0.0022374],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.03593069,"threshold_uncertainty_score":0.1900219,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.1846839422176645,"score_gpt":0.3204032407795069,"score_spread":0.1357192985618423,"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."}}