{"id":"W4386522439","doi":"10.2196/48189","title":"Corpus-Based Discourse Analysis of a Reddit Community of Users of Crystal Methamphetamine: Mixed Methods Study","year":2023,"lang":"en","type":"article","venue":"JMIR Infodemiology","topic":"Substance Abuse Treatment and Outcomes","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"","keywords":"Methamphetamine; Context (archaeology); Lexicon; Psychology; Discourse analysis; Addiction; Construct (python library); MDMA; Sociology; Social psychology; Linguistics; Psychiatry; History; Computer science; Philosophy","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":true,"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":[0.01183107,0.0005887771,0.0008057815,0.007953269,0.005138375,0.003195428,0.001602616,0.001415654,0.002759817],"category_scores_gemma":[0.02918399,0.0004229237,0.0004399727,0.008473854,0.002977967,0.002911638,0.005011095,0.001160638,0.0005220362],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.004014049,"about_ca_system_score_gemma":0.002963808,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01003319,"about_ca_topic_score_gemma":0.0197935,"domain_scores_codex":[0.9893014,0.00730596,0.0007243272,0.001143879,0.001129772,0.00039457],"domain_scores_gemma":[0.9486328,0.04003456,0.002875498,0.001881134,0.00575591,0.0008200157],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"qualitative","study_design_gemma":"qualitative","study_design_scores_codex":[0.0002151478,0.0002981643,0.02066737,0.0008711815,0.00003894718,0.001139102,0.9395939,0.0001503421,0.004632267,0.0024411,0.001307417,0.02864509],"study_design_scores_gemma":[0.00004772485,0.0002168583,0.05653558,0.0007536707,0.00008174392,0.0005824327,0.9044451,0.003082274,0.003533521,0.001568149,0.02907385,0.00007902888],"study_design_candidate":"qualitative","study_design_consensus":"qualitative","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9866847,0.0006011922,0.005421787,0.0005642787,0.00003633647,0.0009893959,0.001334874,0.00003307331,0.004334316],"genre_scores_gemma":[0.9648035,0.000832693,0.02465149,0.0003932617,0.00006770168,0.003631894,0.002315974,0.00008182137,0.003221652],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01183107,"threshold_uncertainty_score":0.06256944,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.08524700640717332,"score_gpt":0.4652926436998168,"score_spread":0.3800456372926435,"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."}}