{"id":"W2945556907","doi":"10.2196/13547","title":"Automatic Identification of Physical Activity Type and Duration by Wearable Activity Trackers: A Validation Study","year":2019,"lang":"en","type":"article","venue":"JMIR mhealth and uhealth","topic":"Physical Activity and Health","field":"Medicine","cited_by":29,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Cancer Institute","keywords":"Activity tracker; Wearable computer; Identification (biology); Physical activity; Duration (music); Computer science; Wearable technology; Medicine; Physical medicine and rehabilitation; Embedded system","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"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":[0.007561223,0.0007995874,0.0004674735,0.0005905111,0.000328966,0.000494627,0.0007239318,0.0009124777,0.0008819901],"category_scores_gemma":[0.01591628,0.0003684936,0.0006917106,0.0003223615,0.0008164132,0.0006720559,0.0007164361,0.0004542059,0.0007211201],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002374161,"about_ca_system_score_gemma":0.0004019409,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00117902,"about_ca_topic_score_gemma":0.001219351,"domain_scores_codex":[0.9959168,0.002032342,0.0004396496,0.0006081205,0.0008388062,0.0001643032],"domain_scores_gemma":[0.9832768,0.007892702,0.002233458,0.001895962,0.004301457,0.0003995928],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.009551115,0.009650476,0.8504269,0.0005318118,0.0006243767,0.0002347723,0.003447477,0.00227961,0.04014856,0.0001659316,0.0006188951,0.08232013],"study_design_scores_gemma":[0.0009870568,0.03864987,0.9282584,0.00009338307,0.0004525866,0.001148219,0.000760584,0.01157019,0.01627619,0.0001468452,0.001580454,0.00007634507],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9940495,0.0000746312,0.004951184,0.00001336405,0.0000120563,0.0003900157,0.0001740823,0.00003409369,0.0003009652],"genre_scores_gemma":[0.9887044,0.0001002324,0.009172841,0.00005617822,0.00002065365,0.0005584834,0.0008880488,0.0000176971,0.0004815135],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.007561223,"threshold_uncertainty_score":0.03998804,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.06007106577087876,"score_gpt":0.408186205036272,"score_spread":0.3481151392653932,"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."}}