Session Taxonomy

Use one canonical vocabulary across extraction, analysis, and reporting.

Outcome (Tier 2)

• success: task completed and interaction ended cleanly.
• mixed: task progressed but result quality was mixed (some issues, corrections, or conflicting signals).
• failure: task failed or answer quality was clearly incorrect.
• abandoned: user moved on before completion.
• not_applicable: automated session (heartbeat/cron) with no direct user task.

Satisfaction (Tier 2)

• positive: user expressed clear approval.
• neutral: no clear sentiment signal.
• negative: user expressed clear dissatisfaction.
• mixed: both positive and negative signals appeared in one session.

Standardization rule

• Prefer mixed over partial_success everywhere.
• partial_success is legacy wording and should be treated as an alias for mixed when reading historical data.