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

2. What is New York Style?

3. Charring and air bubbles around the crust

4. What is New York Style? Charring and air bubbles around the crust Thin Slices

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

6. Family Tree

7. Lombardis (1905)

8. Family Tree Lombardis (1905) Totonnos (1924)

9. Family Tree Lombardis (1905) Totonnos (1924) Johns of Bleecker (1929)

10. Family Tree Lombardis (1905) Totonnos (1924) Patsys (1933) Johns of Bleecker (1929)

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

12. 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

13. The Data

14. Rating Histogram

15. Ratings Breakdown

16. Model for Rating logit(Rating/5.5) ~ 0.77571 – 0.1782*AreaMidtown Coefficients: Estimate SE t-value Pr(>|t|) (Intercept) 0.60326 0.20090 3.003 0.00278 ** AreaMidtown -0.17801 0.06628 -2.686 0.00743 **

17. Model for Rating logit(Rating/5.5) ~ 0.77571 – 0.1782*AreaMidtown Coefficients: Estimate SE t-value Pr(>|t|) (Intercept) 0.60326 0.20090 3.003 0.00278 ** AreaMidtown -0.17801 0.06628 -2.686 0.00743 ** AreaDowntown-0.05766 0.05527 -1.043 0.29724 AreaUptown -0.04838 0.06016 -0.804 0.42154 FuelGas 0.13354 0.11575 1.154 0.24905 FuelWood 0.07606 0.12980 0.586 0.55810 PriceExpensive-0.02827 0.04009 -0.705 0.48097 ReviewsLow 0.03452 0.17958 0.192 0.84762 ReviewsMedium0.02728 0.19083 0.143 0.88638 PizzaName 0.02684 0.06227 0.431 0.66661

18. 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.DfDfFPr(>F) 1 640 2 643-32.81950.03826 * 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

19. Ratings Breakdown.020.005.006 One Sided P-Value

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

21. Number of Reviews by Area

22. Number of Reviews by Fuel

23. Number of Reviews by Price

24. Reviews Histogram Approximately Poisson

25. 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 ***

26. 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 ***

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

28. Most Popular

29. 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

30. Conclusions

31. Coal ovens attract large crowds and the higher prices are worth paying

32. 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.

33. Blogosphere Slice Serious Eats Midtown Lunch Revolution Computing NBC New York

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