Round UUID: de5b424a-7b75-4436-b05e-0d3e7cad2552
Prompt:
Classify each reef as either 'Healthy' or 'Stressed' using ONLY the following explicit, threshold-based rules. Apply the rules STRICTLY IN ORDER, using ONLY the features and thresholds described below. DO NOT use other features, interpretation, or guesswork. Later rules cannot override earlier (higher) rules.
A. Assign 'Stressed' if ANY of these are true (check in this order):
1. ReefIntegrityScore is 'Very Poor'.
2. PollutionLevel is 'Critical' AND at least ONE of these holds:
- PreviousStressIncidents is not 'None'
- DistantStressIndicators is not 'None'
- PredatorActivityLevel is not 'None'
3. BleachingEventsPerYear is 'Constant' or 'Frequent' AND (
AlgalCoverage is 'Heavy' OR
ReefIntegrityScore is not 'Good' or better OR
PollutionLevel is 'High' or worse OR
PreviousStressIncidents is not 'None' or 'Minor' OR
BiodiversityIndex is 'Medium' or lower
)
4. BOTH BleachingEventsPerYear is 'Constant' or 'Frequent' AND DistantStressIndicators is 'Confirmed' or worse (regardless of BiodiversityIndex or other factors).
5. At least TWO of these are true:
• PreviousStressIncidents is not 'None'
• DistantStressIndicators is 'Confirmed' or worse
• PredatorActivityLevel is 'High' or worse
• PollutionLevel is 'High' or worse
• BiodiversityIndex is 'Medium' or lower
• CurrentFlowQuality is 'Poor'
6. ObservationDuration > 100 AND (BleachingEventsPerYear is 'Constant' or 'Frequent').
B. Assign 'Healthy' IF AND ONLY IF ALL of these are true (and NONE of the above A rules match):
1. BiodiversityIndex is at least 'Medium'.
2. ReefIntegrityScore is at least 'Moderate'.
3. PollutionLevel is 'Low', 'Moderate', or 'High'.
4. PreviousStressIncidents is 'None' or 'Minor'.
5. BleachingEventsPerYear is not 'Frequent' or 'Constant', UNLESS (PollutionLevel is 'Low' or 'Moderate' AND PreviousStressIncidents is 'None' or 'Minor' AND BiodiversityIndex is 'High' or 'Very High'; all must be true for this exception).
6. AlgalCoverage is not 'Heavy'. 'Extensive' is only allowed if all above Healthy criteria are strictly met AND PredatorActivityLevel is not 'High' or worse AND DistantStressIndicators is not 'Confirmed' or worse.
7. DistantStressIndicators is not 'Confirmed' or worse IF BleachingEventsPerYear is above 'Occasional'.
8. CurrentFlowQuality is not 'Poor'.
C. If neither A nor B applies, assign:
- 'Stressed' if there are at least FOUR negative signals among: PreviousStressIncidents not 'None', DistantStressIndicators not 'None', NearbyHealthyReef 'Absent', PredatorActivityLevel 'High' or worse, PollutionLevel 'High' or worse, BiodiversityIndex 'Medium' or lower, CurrentFlowQuality 'Poor'.
- 'Healthy' otherwise.
Notes:
- "Stressed" always overrides "Healthy" if both would apply, per the above order.
- AlgalCoverage 'Extensive' alone is NOT sufficient for 'Stressed'; only consider it if other explicit stress signals are present per rules above.
- DistantStressIndicators 'Confirmed' alone does not suffice for 'Stressed' if all other major signals are positive (excellent ReefIntegrityScore, low PollutionLevel, PreviousStressIncidents is 'None', etc.).
- Numerical variables (ObservationDuration, CoralAgeEstimate, AcousticIntensity, ReefAverageAge) are ONLY used where named in these rules.
- When ambiguous, assign 'Healthy' ONLY if positive signals dominate and no A rules match.
Apply the above rules exactly as written, without interpretation or extrapolation.