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: Poor
ObservationDuration: 43
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 72.1
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: Very High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: Low
ReefAverageAge: 43
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: 133
ReefIntegrityScore: Very Poor
PredatorActivityLevel: Severe
AcousticIntensity: 630.9
AlgalCoverage: Minimal
CoralAgeEstimate: 11
BleachingEventsPerYear: Occasional
BiodiversityIndex: Low
NearbyHealthyReef: Absent
ReefMonitoringDuration: < 1 year
PollutionLevel: Moderate
ReefAverageAge: 36
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: No
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: Poor
ObservationDuration: 67
ReefIntegrityScore: Excellent
PredatorActivityLevel: None
AcousticIntensity: 225.5
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: Very High
NearbyHealthyReef: Adjacent
ReefMonitoringDuration: 1-3 years
PollutionLevel: Moderate
ReefAverageAge: 36
DistantStressIndicators: None
ReefDepthZone: Shallow
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: No
InvasiveSpeciesDetected: No
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: 91
Prompt used:
Predict whether a coral reef is "Healthy" or "Stressed" based on the following rules:
**PREDICT STRESSED IF ANY OF THESE CONDITIONS ARE MET:**
1. **Critical Integrity Rule**: ReefIntegrityScore is "Very Poor" OR "Poor"
2. **Severe Predation Rule**: PredatorActivityLevel is "Severe" AND AlgalCoverage is "Extensive" OR "Heavy"
3. **Poor Flow with High Acoustic Rule**: CurrentFlowQuality is "Poor" AND AcousticIntensity > 600
4. **Young Coral Under Constant Bleaching Rule**: CoralAgeEstimate < 15 AND BleachingEventsPerYear is "Constant" AND BiodiversityIndex is NOT "Very High" AND NOT "High"
5. **Multiple Stress Indicators Rule**: Count how many of these are true:
- CurrentFlowQuality is "Poor"
- AlgalCoverage is "Extensive"
- BiodiversityIndex is "Low" OR "Very Low"
- PollutionLevel is "High"
- PreviousStressIncidents is "Major" OR "Severe"
If 3 or more are true, predict STRESSED
6. **Extreme Algae with Low Diversity Rule**: AlgalCoverage is "Extensive" AND BiodiversityIndex is "Low" OR "Very Low"
**OTHERWISE, PREDICT HEALTHY IF:**
- None of the above stress conditions are met
- OR if BiodiversityIndex is "Very High" AND ReefIntegrityScore is NOT "Very Poor" AND NOT "Poor"
**DEFAULT**: If unclear, predict HEALTHY
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 80 8
Actual Stressed 16 9
Accuracy: 0.788
Precision: 0.833
Recall: 0.909
F1 Score: 0.870
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Excellent
ObservationDuration: 79
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 312.5
AlgalCoverage: Extensive
CoralAgeEstimate: 11
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 28
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
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: 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: Poor
ObservationDuration: 55
ReefIntegrityScore: Excellent
PredatorActivityLevel: None
AcousticIntensity: 264.5
AlgalCoverage: Minimal
CoralAgeEstimate: 26
BleachingEventsPerYear: Occasional
BiodiversityIndex: High
NearbyHealthyReef: Adjacent
ReefMonitoringDuration: > 6 years
PollutionLevel: Moderate
ReefAverageAge: 46
DistantStressIndicators: Confirmed
ReefDepthZone: Shallow
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: No
Examples for Correctly predicted Stressed: (Correct answer: Stressed, What the previous set of rules predicted: Stressed)
Entity Data:
CurrentFlowQuality: Poor
ObservationDuration: 43
ReefIntegrityScore: Poor
PredatorActivityLevel: Moderate Low
AcousticIntensity: 64.6
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Low
ReefAverageAge: 27
DistantStressIndicators: None
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Massive
SurveyorExperience: Yes
RemoteSensorPresent: No
InvasiveSpeciesDetected: Yes
Round ID: 105
Prompt used:
Classify coral reef health as either "Healthy" or "Stressed" based on the following rules:
**CLASSIFY AS STRESSED if ANY of the following conditions are met:**
1. **Critical Structural Damage**: If ReefIntegrityScore = "Very Poor", classify as Stressed
2. **Critical Pollution with Poor Structure**: If PollutionLevel = "Critical" AND ReefIntegrityScore = "Poor", classify as Stressed
3. **Extreme Acoustic Stress**: If AcousticIntensity ≥ 1200, classify as Stressed
4. **Young Reef with High Acoustic Stress**: If ReefAverageAge ≤ 30 AND AcousticIntensity ≥ 700, classify as Stressed
5. **Poor Flow + Short Observation**: If CurrentFlowQuality = "Poor" AND ObservationDuration ≤ 35 days, classify as Stressed
6. **Young Reef with Multiple Stressors**: If ReefAverageAge ≤ 30 AND any TWO of the following are true:
- CurrentFlowQuality = "Poor" or "Fair"
- PollutionLevel = "High" or "Critical"
- BleachingEventsPerYear = "Constant"
- PredatorActivityLevel = "None"
7. **Multiple Moderate Stressors**: If any THREE of the following are true:
- CurrentFlowQuality = "Poor" or "Fair"
- PollutionLevel = "High" or "Critical"
- ReefIntegrityScore = "Poor"
- PredatorActivityLevel = "High", "Severe", or "Extreme"
- BleachingEventsPerYear = "Frequent" or "Constant"
8. **High Pollution with Poor Flow**: If PollutionLevel = "High" AND CurrentFlowQuality = "Poor" AND ReefAverageAge ≤ 35, classify as Stressed
9. **Insufficient Observation with Stress Indicators**: If ObservationDuration ≤ 30 days AND any TWO of the following are true:
- CurrentFlowQuality = "Poor" or "Fair"
- PollutionLevel = "High" or "Critical"
- ReefIntegrityScore = "Poor" or "Very Poor"
- PredatorActivityLevel = "High", "Severe", or "Extreme"
**CLASSIFY AS HEALTHY if:**
- None of the above stress conditions are met
- ReefIntegrityScore = "Excellent" AND CurrentFlowQuality = "Excellent" AND PollutionLevel = "Low"
**DEFAULT CLASSIFICATION:**
If none of the explicit stress conditions are met and the reef doesn't qualify for the excellent health criteria, classify as Healthy.
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 64 24
Actual Stressed 7 18
Accuracy: 0.726
Precision: 0.901
Recall: 0.727
F1 Score: 0.805
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Excellent
ObservationDuration: 79
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 139.6
AlgalCoverage: Moderate
CoralAgeEstimate: 21
BleachingEventsPerYear: Constant
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: < 1 year
PollutionLevel: High
ReefAverageAge: 31
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Encrusting
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: Fair
ObservationDuration: 151
ReefIntegrityScore: Good
PredatorActivityLevel: Severe
AcousticIntensity: 670.1
AlgalCoverage: Extensive
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Critical
ReefAverageAge: 41
DistantStressIndicators: Confirmed
ReefDepthZone: Deep
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: Excellent
ObservationDuration: 61
ReefIntegrityScore: Good
PredatorActivityLevel: Low
AcousticIntensity: 182.8
AlgalCoverage: Minimal
CoralAgeEstimate: 21
BleachingEventsPerYear: Constant
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: < 1 year
PollutionLevel: Low
ReefAverageAge: 25
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: 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
| Predicted + | Predicted - | |
|---|---|---|
| Actual + | 71 | 17 |
| Actual - | 8 | 17 |
Accuracy 0.779, Precision 0.899, Recall 0.807, F1 0.850