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Making Restaurant
Inspections Smarter
Me
๏ต Senior DBA at Wake County
๏ต 13 years
๏ต Code for Raleigh Brigade Captain
๏ต Business Analytics student @ Wake Tech
๏ต Lover of craft beer and Tracy โ€“ not in that order
๏ต ChrisTheDBA โ€“ Gmail, Github, Slack, Twitter
Chicago
https://www.foodbornechicago.org/
Chicago
http://chicago.github.io/food-inspections-evaluation/
Chicago
๏ต Establishments that had previous critical or serious violations
๏ต Three-day average high temperature
๏ต Nearby garbage and sanitation complaints
๏ต The type of facility being inspected
๏ต Nearby burglaries
๏ต Whether the establishment has a tobacco license or has an incidental alcohol
consumption license
๏ต Length of time since last inspection
๏ต The length of time the establishment has been operating
๏ต Inspector assigned
Chicago
New York City
New York City
Wake County
๏ต Wake County LIVES data
Wake County
๏ต Yelp Reviews
Wake County
Wake County
๏ต The results are inconclusive that average restaurant ratings may indicate how well
a restaurant performs during a food inspection administered by Wake County
Environmental Services.
๏ต Additionally, we see that restaurants with a higher amount of foodborne illness
flags (as derived from the text within a restaurant's reviews) tend to have lower
average restaurant ratings.
๏ต The results of this project only suggest that restaurant ratings may be correlated
with foodborne illness outbreaks. In order to further investigate a possible
association between restaurant reviews and foodborne illness outbreaks,
additional statistical and study design methods must be considered to improve
the validity and robustness of this project.
Wake County โ€“ Next Steps
๏ต More Data
๏ต Additional review sources: Incorporate restaurant reviews from other sources in addition
to yelp.
๏ต Additional Restaurants: Include more than 200 restaurants in order to have a bigger
sample size.
๏ต Improve match rate between restaurant grade data and restaurant review data: Use
restaurant name and address.
๏ต Storage Solution for data โ€“ Now using OpenDataSoft portal.
Wake County โ€“ Next Steps
๏ต Refine foodborne illness flag (FBI) classification: Perform a more thorough literature
review to identify the best words to use for the FBI flag derivation.
Wake County โ€“ Next Steps
๏ต Apply additional statistical methods and machine learning techniques:
๏ต Apply t-test/ANOVA to identify whether the difference in average restaurant rating is
statistically different between restaurant grade groups/fbi flag groups.
๏ต Explore the ability to prospectively predict foodborne illness outbreak or restaurant grade
given previous restaurant review ratings.
Thanks

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Making Restaurant Inspections Smarter

  • 2. Me ๏ต Senior DBA at Wake County ๏ต 13 years ๏ต Code for Raleigh Brigade Captain ๏ต Business Analytics student @ Wake Tech ๏ต Lover of craft beer and Tracy โ€“ not in that order ๏ต ChrisTheDBA โ€“ Gmail, Github, Slack, Twitter
  • 5. Chicago ๏ต Establishments that had previous critical or serious violations ๏ต Three-day average high temperature ๏ต Nearby garbage and sanitation complaints ๏ต The type of facility being inspected ๏ต Nearby burglaries ๏ต Whether the establishment has a tobacco license or has an incidental alcohol consumption license ๏ต Length of time since last inspection ๏ต The length of time the establishment has been operating ๏ต Inspector assigned
  • 9. Wake County ๏ต Wake County LIVES data
  • 12. Wake County ๏ต The results are inconclusive that average restaurant ratings may indicate how well a restaurant performs during a food inspection administered by Wake County Environmental Services. ๏ต Additionally, we see that restaurants with a higher amount of foodborne illness flags (as derived from the text within a restaurant's reviews) tend to have lower average restaurant ratings. ๏ต The results of this project only suggest that restaurant ratings may be correlated with foodborne illness outbreaks. In order to further investigate a possible association between restaurant reviews and foodborne illness outbreaks, additional statistical and study design methods must be considered to improve the validity and robustness of this project.
  • 13. Wake County โ€“ Next Steps ๏ต More Data ๏ต Additional review sources: Incorporate restaurant reviews from other sources in addition to yelp. ๏ต Additional Restaurants: Include more than 200 restaurants in order to have a bigger sample size. ๏ต Improve match rate between restaurant grade data and restaurant review data: Use restaurant name and address. ๏ต Storage Solution for data โ€“ Now using OpenDataSoft portal.
  • 14. Wake County โ€“ Next Steps ๏ต Refine foodborne illness flag (FBI) classification: Perform a more thorough literature review to identify the best words to use for the FBI flag derivation.
  • 15. Wake County โ€“ Next Steps ๏ต Apply additional statistical methods and machine learning techniques: ๏ต Apply t-test/ANOVA to identify whether the difference in average restaurant rating is statistically different between restaurant grade groups/fbi flag groups. ๏ต Explore the ability to prospectively predict foodborne illness outbreak or restaurant grade given previous restaurant review ratings.