{"id":"W2007770020","doi":"10.1007/s10874-008-9110-5","title":"Characterization of volatile organic compound emission sources in Fort Saskatchewan, Alberta using principal component analysis","year":2008,"lang":"en","type":"article","venue":"Journal of Atmospheric Chemistry","topic":"Atmospheric chemistry and aerosols","field":"Earth and Planetary Sciences","cited_by":16,"is_retracted":false,"has_abstract":false,"ca_institutions":"Environment and Climate Change Canada","funders":"","keywords":"Principal component analysis; Varimax rotation; Environmental science; Volatile organic compound; Air pollution; Environmental chemistry; Pollution; Chemistry; Statistics","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0002030431,0.000207335,0.0005999176,0.000003401904,0.0001054936,0.0000203425,0.0002947154,0.0001411686,0.002961568],"category_scores_gemma":[0.00004397675,0.0001797527,0.0002347575,0.0008433899,0.0001179251,0.0002288764,0.00002424603,0.0002668452,0.000001749945],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00004151526,"about_ca_system_score_gemma":0.0003113751,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0008990162,"about_ca_topic_score_gemma":0.0001648033,"domain_scores_codex":[0.9981797,0.00003173319,0.0009049764,0.0002042112,0.0004297468,0.0002496218],"domain_scores_gemma":[0.9983839,0.0001041481,0.001014388,0.0001997223,0.000117562,0.0001802672],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00007955026,0.00006593185,0.5032181,0.00004912748,0.0001180047,0.00004385591,0.0005061048,0.006627333,0.4891051,1.837086e-8,0.000005680361,0.0001811335],"study_design_scores_gemma":[0.001108429,0.00007996026,0.5588079,0.0001615843,0.000337719,0.0006664185,0.001112038,0.06614517,0.3706814,0.00001165249,0.0004643638,0.0004233423],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9983375,0.000159104,0.00102832,0.00002393448,0.00006847175,0.00005532384,0.000009701424,0.00000635581,0.000311304],"genre_scores_gemma":[0.9954868,0.00004667984,0.003614433,0.00001654023,0.0001459109,1.640527e-7,0.00006675465,0.000007134596,0.0006155928],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1184237,"threshold_uncertainty_score":0.9979498,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01066449800409535,"score_gpt":0.2037774897042793,"score_spread":0.1931129917001839,"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."}}