Dataset: southgermancredit
Round ID: 299
Prompt used:
# Coral Reef Health Classification Rules
Evaluate each coral reef using the following set of rules to determine if it is HEALTHY or STRESSED. Apply these rules sequentially and classify accordingly.
## Rule 1: Current Flow and Integrity Assessment
- If CurrentFlowQuality is "Poor" AND ReefIntegrityScore is "Very Poor", classify as STRESSED.
- If CurrentFlowQuality is "Excellent" AND ReefIntegrityScore is "Excellent" or "Good", classify as HEALTHY unless contradicted by Rule 6.
- If CurrentFlowQuality is "Poor" but ReefIntegrityScore is "Excellent", evaluate other positive factors before classification (see Rule 5).
## Rule 2: Pollution and Biodiversity Assessment
- If PollutionLevel is "Critical" AND BiodiversityIndex is "Low", classify as STRESSED.
- If BiodiversityIndex is "High" or "Very High", consider the reef POTENTIALLY HEALTHY (confirm with Rules 5 and 6).
- If PollutionLevel is "Critical" or "High" but BiodiversityIndex is "High" or "Very High" AND ReefAverageAge > 35, consider the reef POTENTIALLY HEALTHY (confirm with Rules 5 and 6).
## Rule 3: Reef and Coral Age Evaluation
- If CoralAgeEstimate ≤ 11 AND ReefAverageAge < 28, classify as STRESSED unless BiodiversityIndex is "High" or "Very High".
- If CoralAgeEstimate ≥ 16 AND ReefAverageAge > 35 AND BiodiversityIndex is not "Low", consider the reef POTENTIALLY HEALTHY (confirm with Rules 5 and 6).
## Rule 4: Bleaching and Algal Coverage Assessment
- If BleachingEventsPerYear is "Constant" AND AlgalCoverage is "Extensive" AND BiodiversityIndex is "Low" or "Medium", classify as STRESSED.
- If BleachingEventsPerYear is "Constant" but BiodiversityIndex is "High" or "Very High" AND ReefIntegrityScore is "Excellent" or "Good", this is not automatically indicative of stress (evaluate using Rules 5 and 6).
## Rule 5: Positive Health Indicators
If THREE OR MORE of the following conditions are met, classify as HEALTHY unless Rule 6 applies:
- CurrentFlowQuality is "Excellent" or "Good"
- BiodiversityIndex is "High" or "Very High"
- AlgalCoverage is "Minimal" or "Sparse"
- ReefIntegrityScore is "Excellent" or "Good"
- PollutionLevel is "Low" or "Moderate"
- ReefAverageAge > 35
- CoralAgeEstimate > 15
## Rule 6: Critical Stress Indicators
If ANY THREE of the following conditions are met, classify as STRESSED regardless of other factors:
- AcousticIntensity > 850
- PollutionLevel is "Critical" AND BiodiversityIndex is not "High" or "Very High"
- CurrentFlowQuality is "Poor" AND ReefIntegrityScore is "Very Poor" or "Poor"
- BleachingEventsPerYear is "Frequent" AND AlgalCoverage is "Extensive"
- CoralAgeEstimate < 10 AND ReefAverageAge < 25
## Rule 7: Additional Health Indicators
If a reef meets TWO of these conditions, classify as HEALTHY unless it meets Rule 6:
- ReefIntegrityScore is "Excellent" AND any one other positive indicator from Rule 5
- BiodiversityIndex is "High" or "Very High" AND ReefAverageAge > 35
- BiodiversityIndex is "High" or "Very High" AND AlgalCoverage is "Minimal"
## Default Rule
If no clear classification has been made from the above rules:
- If TWO OR MORE of these key indicators (BiodiversityIndex, ReefIntegrityScore, CurrentFlowQuality, PollutionLevel) are positive, AND AcousticIntensity < 600, classify as HEALTHY.
- If TWO OR MORE of these key indicators are negative, OR AcousticIntensity > 600 AND either PollutionLevel is "High"/"Critical" or CurrentFlowQuality is "Poor", classify as STRESSED.
- In uncertain cases where there is a balanced mix of positive and negative indicators, prioritize BiodiversityIndex and ReefIntegrityScore in the final decision.
When evaluating, apply rules in sequence but prioritize Rules 5 and 6 when their conditions are conclusively met.
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 48 40
Actual Stressed 10 15
Accuracy: 0.558
Precision: 0.828
Recall: 0.545
F1 Score: 0.658
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Fair
ObservationDuration: 43
ReefIntegrityScore: Excellent
PredatorActivityLevel: Moderate Low
AcousticIntensity: 359.3
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Rare
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: < 1 year
PollutionLevel: Low
ReefAverageAge: 26
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Massive
SurveyorExperience: Yes
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Examples for Falsely predicted Stressed when it should have been Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Stressed)
Entity Data:
CurrentFlowQuality: Good
ObservationDuration: 43
ReefIntegrityScore: Moderate
PredatorActivityLevel: Low
AcousticIntensity: 144.4
AlgalCoverage: Extensive
CoralAgeEstimate: 26
BleachingEventsPerYear: Frequent
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Low
ReefAverageAge: 58
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Soft
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
Examples for Falsely predicted Healthy when it should have been Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Good
ObservationDuration: 34
ReefIntegrityScore: Very Poor
PredatorActivityLevel: Moderate Low
AcousticIntensity: 135.7
AlgalCoverage: Minimal
CoralAgeEstimate: 11
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 37
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Soft
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
Examples for Correctly predicted Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Stressed)
Entity Data:
CurrentFlowQuality: Fair
ObservationDuration: 97
ReefIntegrityScore: Moderate
PredatorActivityLevel: Low
AcousticIntensity: 346.1
AlgalCoverage: Sparse
CoralAgeEstimate: 16
BleachingEventsPerYear: Occasional
BiodiversityIndex: Medium
NearbyHealthyReef: Nearby
ReefMonitoringDuration: > 6 years
PollutionLevel: High
ReefAverageAge: 24
DistantStressIndicators: None
ReefDepthZone: Shallow
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Round ID: 306
Prompt used:
You are given ONE reef‑survey record. Decide whether the reef is "Healthy" or "Stressed" by following the steps below EXACTLY and DETERMINISTICALLY. Output ONLY the single word Healthy or Stressed.
STEP 0 – HEALTH OVERRIDE (apply first)
If ALL of the following are true, immediately output Healthy:
• ReefIntegrityScore = Excellent
• PredatorActivityLevel is "None" or "Very Low"
• AcousticIntensity < 300
• BiodiversityIndex = High
STEP 1 – STRESS OVERRIDES (apply next; if any match, output Stressed)
A) PollutionLevel is High or Critical AND InvasiveSpeciesDetected = Yes AND ReefIntegrityScore is Moderate, Poor or Very Poor
B) BleachingEventsPerYear = Constant AND AcousticIntensity < 500
If neither override fired, continue to Step 2.
STEP 2 – ASSIGN RISK POINTS
(a) BleachingEventsPerYear
Rare = 0 Occasional = 1 Frequent = 2 Constant = 2
(b) PollutionLevel
Low = 0 Moderate = 1 High = 3 Critical = 4
(c) ReefIntegrityScore
Excellent = 0 Good = 1 Moderate = 2 Poor = 3 Very Poor = 4
(d) PredatorActivityLevel (treat "Moderate Low" as Moderate; treat "High", "Severe" or "Extreme" the same)
None / Very Low = 0 Moderate / Moderate Low = 1 High / Severe / Extreme = 1
(e) InvasiveSpeciesDetected Yes = 1 No = 0
(f) AcousticIntensity (numeric)
> 900 = 2 500–900 = 1 < 500 = 0
(g) DistantStressIndicators
Confirmed = 1 Possible or Absent = 0
(h) PreviousStressIncidents
None / Minor = 0 Moderate = 1 Severe or worse = 2
STEP 3 – CALCULATE TOTAL RISK
Add all points from Step 2.
STEP 4 – FINAL DECISION
If TOTAL RISK ≥ 9 → Stressed
Otherwise → Healthy
Do not add any explanations or extra words.
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 37 51
Actual Stressed 6 19
Accuracy: 0.496
Precision: 0.860
Recall: 0.420
F1 Score: 0.565
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Excellent
ObservationDuration: 43
ReefIntegrityScore: Excellent
PredatorActivityLevel: None
AcousticIntensity: 151.5
AlgalCoverage: Minimal
CoralAgeEstimate: 26
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: < 1 year
PollutionLevel: Low
ReefAverageAge: 41
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Massive
SurveyorExperience: No
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Examples for Falsely predicted Stressed when it should have been Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Stressed)
Entity Data:
CurrentFlowQuality: Excellent
ObservationDuration: 79
ReefIntegrityScore: Moderate
PredatorActivityLevel: None
AcousticIntensity: 154.5
AlgalCoverage: Heavy
CoralAgeEstimate: 21
BleachingEventsPerYear: Constant
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: 4-6 years
PollutionLevel: High
ReefAverageAge: 37
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: No
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
Examples for Falsely predicted Healthy when it should have been Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Fair
ObservationDuration: 61
ReefIntegrityScore: Moderate
PredatorActivityLevel: None
AcousticIntensity: 106.2
AlgalCoverage: Extensive
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: Moderate
ReefAverageAge: 36
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Examples for Correctly predicted Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Stressed)
Entity Data:
CurrentFlowQuality: Poor
ObservationDuration: 79
ReefIntegrityScore: Very Poor
PredatorActivityLevel: Low
AcousticIntensity: 413.0
AlgalCoverage: Minimal
CoralAgeEstimate: 26
BleachingEventsPerYear: Frequent
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Critical
ReefAverageAge: 26
DistantStressIndicators: None
ReefDepthZone: Shallow
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
SurveyorExperience: No
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Round ID: 349
Prompt used:
Given the entity data for a reef observation, predict the reef status as Healthy or Stressed based on the following rule: If Observation Duration is less than or equal to 50, Predator Activity Level is Severe, Bleaching Events Per Year is Frequent, and Reef Integrity Score is Poor or Fair, predict Stressed. Otherwise, predict Healthy.
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 88 0
Actual Stressed 25 0
Accuracy: 0.779
Precision: 0.779
Recall: 1.000
F1 Score: 0.876
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Fair
ObservationDuration: 67
ReefIntegrityScore: Very Poor
PredatorActivityLevel: Very Low
AcousticIntensity: 616.8
AlgalCoverage: Sparse
CoralAgeEstimate: 26
BleachingEventsPerYear: Frequent
BiodiversityIndex: Very High
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: High
ReefAverageAge: 34
DistantStressIndicators: None
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
Examples for Falsely predicted Healthy when it should have been Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Fair
ObservationDuration: 61
ReefIntegrityScore: Moderate
PredatorActivityLevel: Very Low
AcousticIntensity: 1299.6
AlgalCoverage: Minimal
CoralAgeEstimate: 6
BleachingEventsPerYear: Frequent
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Critical
ReefAverageAge: 41
DistantStressIndicators: Confirmed
ReefDepthZone: Deep
PreviousStressIncidents: None
CoralDominantType: Soft
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
| Predicted + | Predicted - | |
|---|---|---|
| Actual + | 58 | 30 |
| Actual - | 12 | 13 |
Accuracy 0.628, Precision 0.829, Recall 0.659, F1 0.734