| { | |
| "retention": { | |
| "D-MCONJ": 0.75, | |
| "M-COMP": 0.82, | |
| "P-GRAM": 0.68, | |
| "T-ORG": 0.91 | |
| }, | |
| "engagement": "high", | |
| "risk": "low", | |
| "days_inactive": 0, | |
| "total_sessions": 24, | |
| "success_rate": 3.8, | |
| "last_active": "2026-01-29", | |
| "preferred_learning_time": "morning", | |
| "average_session_duration": 22, | |
| "consistency_score": 0.87, | |
| "achievements": ["regular_learner", "spaced_repetition_master"] | |
| } |