what’s in an a- pest violations in nyc restaurant inspections
TRANSCRIPT
What’s in an A?Pest Violations in NYC RestaurantsMichael JohnsMetis, Project Luther10/28/16
“Cronut-Loving Mouse Frolics Inside Dominique Ansel Bakery”
NYC Restaurant Inspections
Program began in 2010
Point System
‘A’: 0-13 points
‘B’: 14-27
‘C’: 28+
Inspection Checklist
NYC Restaurant Inspections
Grades improving over time
Over 80% of restaurants received an A
NYC Restaurant Inspections
Grades improving over time
Over 80% of restaurants received an A
Can we predict Pest Violations?
Target Data
NYC Restaurant Inspection Data- 10/20/15 to 10/20/16
- Indicator of any pest violations during last inspection
- 24,000 restaurants- 85% A grades- 45% pest violations
Neighborhood Factors
Rodent Inspection:- “Active Signs”
- “Bait laid”
% Living in Poverty
311 Complaints:- Rodents
- Overflowing trash bins
- Unsanitary conditions
Restaurant Factors
Food Type: Top 20- “American”
- “Chinese”
- “Cafe”
- etc.
Date of Inspection:- Quarter
- Month
- Day of week
311 + Poverty
311 + Poverty + Food Type
311 + Poverty + Food Type + Inspection Date
Best Model:
Accuracy: 70%
Precision: .62
Recall: .67
F1: .64
Feature Importances
Conclusion
Predicting pest violations seems plausible
Timing effects are curious
More data or more model?
Thank You!Questions?
