{"id":"W6907291636","doi":"10.20381/ruor-31296","title":"Automated Detection of Substance Use Through Social Mining and its Prediction Ability in the Canadian Population","year":2025,"lang":"en","type":"dissertation","venue":"University of Ottawa - Library","topic":"Mental Health via Writing","field":"Psychology","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Substance use; Psychological intervention; Social media; Population; Substance abuse; Consumption (sociology); Process (computing)","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":[],"consensus_categories":[],"category_scores_codex":[0.0008186303,0.0007693318,0.0003880981,0.001985155,0.001134912,0.0007644129,0.001141097,0.0006597816,0.001781414],"category_scores_gemma":[0.00345417,0.0002141296,0.0008482593,0.001406771,0.0003147319,0.0004411236,0.0007752979,0.0007399561,0.0007829391],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.005964531,"about_ca_system_score_gemma":0.005511124,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9207582,"about_ca_topic_score_gemma":0.9146399,"domain_scores_codex":[0.9995117,0.00005641453,0.0000253031,0.0001197772,0.0001760769,0.0001106871],"domain_scores_gemma":[0.998876,0.0002005147,0.00007631742,0.00006809909,0.0006646068,0.0001144136],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0003569625,0.0004491883,0.8106706,0.0001730448,0.0001840821,0.000331688,0.0005002063,0.01013108,0.001669948,0.001095107,0.02327428,0.1511639],"study_design_scores_gemma":[0.00004060853,0.0001578554,0.6310067,0.00007651662,0.0001830355,0.0002461852,0.001091721,0.350465,0.002437415,0.0009992529,0.01320792,0.00008783472],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9648287,0.001034774,0.004757155,0.002085323,0.0001332397,0.0002144843,0.0196177,0.0005373151,0.00679126],"genre_scores_gemma":[0.9721085,0.0008312266,0.007150276,0.0002246397,0.00006009485,0.00007196247,0.01394807,0.00002479464,0.00558043],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.07924181,"threshold_uncertainty_score":0.1594169,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03040978219428271,"score_gpt":0.283335869178383,"score_spread":0.2529260869841003,"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."}}