Round 190

Round UUID: e2ec7dcd-de96-45cf-8b74-3207c1a4be4e

Prompt:

Classify each reef as either 'Healthy' or 'Stressed' using ONLY the following explicit, threshold-based rules. Apply the rules STRICTLY IN ORDER, referencing ONLY the features and thresholds described below. Do not use interpretations or features not listed. Once a rule matches, assign immediately—do not check further rules lower in order.

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:
      - PreviousStressIncidents is greater than 'Minor'
      - DistantStressIndicators is 'Confirmed' or worse
      - PredatorActivityLevel is 'High', 'Severe', or 'Extreme'
      - BiodiversityIndex is 'Medium' or lower
      - BleachingEventsPerYear is 'Frequent' or 'Constant'
  3. BleachingEventsPerYear is 'Constant' or 'Frequent' AND (
        AlgalCoverage is 'Heavy' OR 
        ReefIntegrityScore is 'Poor' or 'Very Poor' OR 
        PollutionLevel is 'High' or worse OR 
        PreviousStressIncidents is greater than 'Minor' OR
        BiodiversityIndex is 'Medium' or lower
    )
  4. BleachingEventsPerYear is 'Constant' or 'Frequent' AND DistantStressIndicators is 'Confirmed' or worse AND (at least one of: PollutionLevel is 'High' or worse, ReefIntegrityScore is not 'Good' or better, PreviousStressIncidents is not 'None', PredatorActivityLevel is 'High' or worse, BiodiversityIndex is 'Medium' or lower).
  5. At least TWO of these severe stress signals are true:
      • PreviousStressIncidents greater than 'Minor'
      • DistantStressIndicators is 'Confirmed' or worse
      • PredatorActivityLevel is 'High', 'Severe', or 'Extreme'
      • PollutionLevel is 'High' or 'Critical'
      • BiodiversityIndex is 'Medium' or lower
      • CurrentFlowQuality is 'Poor' AND at least one of the other items in this list is true
  6. ObservationDuration > 100 AND (BleachingEventsPerYear is 'Constant' or 'Frequent') AND at least one other stress signal from list in A5 is present.

  SPECIAL RULE: DistantStressIndicators at 'Confirmed' or worse DOES NOT ALONE suffice for 'Stressed' if all other major signals are positive (ReefIntegrityScore is 'Moderate' or better, PollutionLevel is 'Low' or 'Moderate', PreviousStressIncidents is 'None', BiodiversityIndex is 'High' or better, PredatorActivityLevel below 'High').

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' AND BiodiversityIndex is 'High' or 'Very High' AND ReefIntegrityScore is at least 'Good'; all must be true for this exception).
  6. AlgalCoverage is not 'Heavy'. 'Extensive' is ONLY allowed if all above 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', UNLESS all other major signals are best (see B5).
  8. CurrentFlowQuality is not 'Poor', except if all other major signals are at their best (as for B5 exception).

C. If neither A nor B applies, assign:
  - 'Stressed' if there are at least THREE negative signals, of which at least TWO must be from: PreviousStressIncidents greater than 'Minor', DistantStressIndicators is 'Confirmed' or worse, PredatorActivityLevel is 'High' or worse, PollutionLevel is 'High' or worse, BiodiversityIndex is 'Medium' or lower, AlgalCoverage is 'Heavy', ReefIntegrityScore is 'Poor' or worse, CurrentFlowQuality is 'Poor'.
  - 'Healthy' otherwise.

Notes:
- "Stressed" always overrides "Healthy" if both would apply.
- AlgalCoverage 'Extensive' or DistantStressIndicators 'Confirmed' alone are NOT sufficient for 'Stressed'; consider only in combination with other explicit negatives as in above rules.
- Numerical fields (e.g., ObservationDuration) are used ONLY as allowed above.
- When ambiguous, assign 'Healthy' ONLY if positive signals dominate and no A rules match.

Apply these rules EXACTLY as written. Do not infer, interpolate, or use features not named above.

• Inferences: 1000
• Created: 2025-04-17 09:51:14+00:00
• First inference: 2025-04-17 09:51:22+00:00
• Last inference: 2025-04-17 11:40:00+00:00
• Completed: yes
• Train accuracy: 0.5440613026819924 (KT 0.264)
• Validation accuracy: 0.5576923076923077 (KT 0.254)
• Test accuracy: 0.5929203539823009 (KT 0.227)