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New York Pizza How to Find the Best Jared P. Lander Columbia University December 3, 2008.

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New York Pizza How to Find the Best Jared P. Lander Columbia University December 3, 2008.

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1 New York Pizza How to Find the Best Jared P. Lander Columbia University December 3, 2008

2 What is New York Style? Charring and air bubbles around the crust Thin Slices Just the right bend for folding

3 Family Tree Lombardis (1905) Totonnos (1924) Patsys (1933) Johns of Bleecker (1929) Grimaldis (1990)

4 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

5 The Data

6 Rating Histogram

7 Ratings Breakdown

8 Model for Rating logit(Rating/5.5) ~ – *AreaMidtown Coefficients: Estimate SE t-value Pr(>|t|) (Intercept) ** AreaMidtown ** AreaDowntown AreaUptown FuelGas FuelWood PriceExpensive ReviewsLow ReviewsMedium PizzaName

9 Model for Rating logit(Rating/5.5) ~ – *AreaMidtown Wald test Model 1: logit(Rating/5.5) ~ Area Model 2: logit(Rating/5.5) ~ 1 Res.DfDfFPr(>F) * 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

10 Ratings Breakdown One Sided P-Value

11 Review Count Use the number of reviews as a proxy for popularity Why do people frequent these pizzerias in the first place?

12 Number of Reviews by Area

13 Number of Reviews by Fuel

14 Number of Reviews by Price

15 Reviews Histogram Approximately Poisson

16 Model for Review Count Number.Reviews ~ *AreaUptown – 1.641*FuelGas – 0.734*FuelWood *PriceExpensive *FuelGas:PriceExpensive *FuelWood:PriceExpensive (Poisson Regression) Coefficients: Estimate SE z-value Pr(>|z|) (Intercept) < 2e-16 *** AreaUptown e-13 *** FuelGas < 2e-16 *** FuelWood < 2e-16 *** PriceExpensive e-12 *** FuelGas:PriceExpensive < 2e-16 *** FuelWood:PriceExpensive e-10 ***

17 Model for Review Count Number.Reviews ~ *AreaUptown – 1.641*FuelGas – 0.734*FuelWood *PriceExpensive *FuelGas:PriceExpensive *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) < 2.2e-16 ***

18 Fitted Values Coal and then wood dominates! All pizzerias on this list are categorized as expensive Both Uptown and Downtown

19 Most Popular

20 Top Pizzerias Lombardis Di Fara Joes Johns of Bleecker Totonnos (Coney Island) Vinny Vincenz Pizza 33 No. 28 Patsys (East Harlem) Artichoke Maffeis New York Pizza Suprema Una Pizza Napoletana Frannys

21 Conclusions Coal ovens attract large crowds and the higher prices are worth paying The old adage about pizza is true: Even when its bad, its still good.

22 Jareds Picks Pie: Margherita: Neapolitan: Upscale: Largest: Johns of Bleecker Pizza 33 Joes (Carmine St.) Una Pizza Napoletana Koronet Specialty: Sicilian: Grandma: Upside Down: Cheapest: Artichoke Vinny Vincenz Maffeis New York Pizza Suprema Crocodile Lounge* * Free with purchase of beer


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