200 likes | 338 Views
New York Pizza How to Find the Best. Jared P. Lander Columbia University December 3, 2008. What is New York Style?. Thin Slices. Just the right bend for folding. Charring and air bubbles around the crust. Family Tree. Lombardi’s (1905). Patsy’s (1933). Totonno’s (1924).
E N D
New York PizzaHow to Find the Best Jared P. Lander Columbia University December 3, 2008
What is New York Style? Thin Slices Just the right bend for folding Charring and air bubbles around the crust
Family Tree Lombardi’s (1905) Patsy’s (1933) Totonno’s (1924) John’s of Bleecker (1929) Grimaldi’s (1990)
The Data • MenuPages.com has menus, ratings, locations and price information for nearly 700 restaurants tagged as pizza in Manhattan and parts of Brooklyn • Slice, a pizza blog, has a definitive listing (and maps) of coal pizzerias • An exhaustive Google search provided wood classifications
Model for Rating • logit(Rating/5.5) ~ 0.77571 – 0.1782*AreaMidtown • Wald test • Model 1: logit(Rating/5.5) ~ Area • Model 2: logit(Rating/5.5) ~ 1 • Res.Df Df F Pr(>F) • 1 640 • 2 643 -3 2.8195 0.03826 * • Perhaps is more appropriate due to its simplicity and the minimal impact of the lone coefficient in the model • Maybe all pizza is for the most part pretty good
Ratings Breakdown One Sided P-Value .020 .005 .006
Review Count Use the number of reviews as a proxy for popularity Why do people frequent these pizzerias in the first place?
Reviews Histogram Approximately Poisson
Model for Review Count • Number.Reviews ~ 3.826 + 0.157*AreaUptown – 1.641*FuelGas – 0.734*FuelWood - 0.545*PriceExpensive + 0.119*FuelGas:PriceExpensive + 0.670*FuelWood:PriceExpensive • (Poisson Regression) • Coefficients: • Estimate SE z-value Pr(>|z|) • (Intercept) 3.82693 0.05899 64.876 < 2e-16 *** • AreaUptown 0.15733 0.02156 7.297 2.94e-13 *** • FuelGas -1.64163 0.06019 -27.273 < 2e-16 *** • FuelWood -0.73476 0.08884 -8.271 < 2e-16 *** • PriceExpensive -0.54561 0.07919 -6.890 5.60e-12 *** • FuelGas:PriceExpensive 1.11908 0.08289 13.501 < 2e-16 *** • FuelWood:PriceExpensive 0.67017 0.10819 6.195 5.85e-10 ***
Model for Review Count • Number.Reviews ~ 3.826 + 0.157*AreaUptown – 1.641*FuelGas – 0.734*FuelWood - 0.545*PriceExpensive + 0.119*FuelGas:PriceExpensive + 0.670*FuelWood:PriceExpensive • (Poisson Regression) • Wald test • Model 1: Number.Reviews ~ Area + Fuel + Price + Price * Fuel • Model 2: Number.Reviews ~ 1 • Res.Df Df F Pr(>F) • 1 637 • 2 643 -6 309.94 < 2.2e-16 ***
Fitted Values Coal and then wood dominates! All pizzerias on this list are categorized as expensive Both Uptown and Downtown
Lombardi’s Di Fara Joe’s John’s of Bleecker Totonno’s (Coney Island) Vinny Vincenz Pizza 33 No. 28 Patsy’s (East Harlem) Artichoke Maffei’s New York Pizza Suprema Una Pizza Napoletana Franny’s Top Pizzerias
Conclusions • Coal ovens attract large crowds and the higher prices are worth paying • The old adage about pizza is true: “Even when it’s bad, it’s still good.”
Jared’s Picks Pie: Margherita: Neapolitan: Upscale: Largest: John’s of Bleecker Pizza 33 Joe’s (Carmine St.) Una Pizza Napoletana Koronet Artichoke Vinny Vincenz Maffei’s New York Pizza Suprema Crocodile Lounge* Specialty: Sicilian: Grandma: Upside Down: Cheapest: * Free with purchase of beer