| { |
| "schema_version": "mdu_riskbench.v1", |
| "name": "MDU-RiskBench", |
| "paired_dataset": "MDU-RiskText v1", |
| "task": "Text-only Youth Digital Use Risk Screening", |
| "participant_count": 850, |
| "selected_source_video_count": 9831, |
| "participant_disjoint_splits": true, |
| "split_counts": { |
| "train": 593, |
| "validation": 131, |
| "test": 126 |
| }, |
| "ordinal_labels": [ |
| "no_observed_risk", |
| "mild_risk", |
| "moderate_risk", |
| "high_risk" |
| ], |
| "abstention_label": "insufficient_evidence", |
| "label_counts": { |
| "no_observed_risk": 226, |
| "mild_risk": 432, |
| "moderate_risk": 172, |
| "high_risk": 20 |
| }, |
| "headline_settings": { |
| "video_only": "PriVTE privacy-filtered video-to-text evidence", |
| "non_video_only": "coarse app-category, heart-rate-bin, and questionnaire-risk text", |
| "all_filtered_text": "PriVTE evidence plus coarse auxiliary text" |
| }, |
| "primary_metrics": [ |
| "accuracy", |
| "macro_f1", |
| "ordinal_mae", |
| "ordinal_rmse", |
| "coverage" |
| ], |
| "ordinal_metric_policy": "MAE and RMSE are computed on predictions in the four ordinal labels; insufficient_evidence is reported through coverage.", |
| "source_video_selection": { |
| "maximum_selected_per_participant": 12, |
| "selection": "uniform_over_ordered_source_inventory", |
| "minimum_video_stream_duration_seconds": 4.0, |
| "all_selected_files_must_pass_technical_validation": true, |
| "replacement_after_selected_file_failure": false |
| } |
| } |
|
|
