Dataset: southgermancredit
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: Fair
ObservationDuration: 70
ReefIntegrityScore: Excellent
PredatorActivityLevel: Low
AcousticIntensity: 276.5
AlgalCoverage: Heavy
CoralAgeEstimate: 21
BleachingEventsPerYear: Frequent
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 35
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: Minor
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: Yes
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: 43
ReefIntegrityScore: Moderate
PredatorActivityLevel: None
AcousticIntensity: 241.0
AlgalCoverage: Extensive
CoralAgeEstimate: 26
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 4-6 years
PollutionLevel: High
ReefAverageAge: 53
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
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: Fair
ObservationDuration: 25
ReefIntegrityScore: Moderate
PredatorActivityLevel: None
AcousticIntensity: 1457.5
AlgalCoverage: Extensive
CoralAgeEstimate: 6
BleachingEventsPerYear: Rare
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: Moderate
ReefAverageAge: 26
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Branching
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
Round ID: 96
Prompt used:
Predict whether a coral reef is "Healthy" or "Stressed" based on the following rules:
A reef should be classified as "Stressed" if ANY of these conditions are met:
1. ReefIntegrityScore is "Poor" OR "Very Poor"
2. CoralAgeEstimate is less than or equal to 11 years AND ReefAverageAge is less than 30 years
3. ObservationDuration is greater than 100 days
4. CurrentFlowQuality is "Poor" AND ReefIntegrityScore is "Moderate" or worse
5. PredatorActivityLevel is "High" OR "Severe"
6. ReefAverageAge is less than 25 years AND CurrentFlowQuality is not "Excellent"
7. CoralAgeEstimate is 6 years or less
Otherwise, classify the reef as "Healthy".
When evaluating conditions:
- For ReefIntegrityScore, the order from best to worst is: Excellent > Good > Moderate > Poor > Very Poor
- For CurrentFlowQuality, the order from best to worst is: Excellent > Good > Fair > Poor
- For numeric values, use exact comparisons (e.g., "less than or equal to 11" means ≤ 11)
Confusion Matrix:
Predicted Healthy Predicted Stressed
Actual Healthy 53 35
Actual Stressed 6 19
Accuracy: 0.637
Precision: 0.898
Recall: 0.602
F1 Score: 0.721
Examples for Correctly predicted Healthy: (Correct answer: Healthy, What the previous set of rules predicted: Healthy)
Entity Data:
CurrentFlowQuality: Good
ObservationDuration: 79
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 517.2
AlgalCoverage: Minimal
CoralAgeEstimate: 21
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 28
DistantStressIndicators: None
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: Excellent
ObservationDuration: 187
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 1016.4
AlgalCoverage: Sparse
CoralAgeEstimate: 21
BleachingEventsPerYear: Occasional
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: > 6 years
PollutionLevel: Low
ReefAverageAge: 24
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
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: 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: Excellent
ObservationDuration: 61
ReefIntegrityScore: Good
PredatorActivityLevel: Severe
AcousticIntensity: 218.9
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Constant
BiodiversityIndex: Very High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 31
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: Yes
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: 115
ReefIntegrityScore: Good
PredatorActivityLevel: None
AcousticIntensity: 288.2
AlgalCoverage: Sparse
CoralAgeEstimate: 26
BleachingEventsPerYear: Constant
BiodiversityIndex: High
NearbyHealthyReef: Absent
ReefMonitoringDuration: 4-6 years
PollutionLevel: Critical
ReefAverageAge: 33
DistantStressIndicators: Confirmed
ReefDepthZone: Deep
PreviousStressIncidents: None
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: 151
ReefIntegrityScore: Moderate
PredatorActivityLevel: Moderate Low
AcousticIntensity: 677.8
AlgalCoverage: Minimal
CoralAgeEstimate: 16
BleachingEventsPerYear: Frequent
BiodiversityIndex: Medium
NearbyHealthyReef: Absent
ReefMonitoringDuration: 1-3 years
PollutionLevel: High
ReefAverageAge: 34
DistantStressIndicators: Confirmed
ReefDepthZone: Mid-depth
PreviousStressIncidents: None
CoralDominantType: Encrusting
SurveyorExperience: Yes
RemoteSensorPresent: Yes
InvasiveSpeciesDetected: Yes
| Predicted + | Predicted - | |
|---|---|---|
| Actual + | 66 | 22 |
| Actual - | 8 | 17 |
Accuracy 0.735, Precision 0.892, Recall 0.750, F1 0.815