1. Empirical Software Engineering using Ultra Large Repositories Mei Nagappan SAIL

2. Photo: Doug Menuez/Contour by Getty Images/Stanford University Libraries

3. Agenda Part 1 – Introduction – Course Overview and Objectives – Student introductions and expectations – Syllabus – Assignment and Project Part 2 – Example of an Ultra Large Repository – World of Code – How to access it? Part 3 – Example of on ESE study – What we did? – How we did it?

4. Typical ESE vs ESE in ULR

5. What can we learn about SE from these Ultra Large Repositories?

6. Challenges Mining Sample Selection Analysis Noise

7. Syllabus Project and Assignment Break

10. Example Study

12. Are Most Apps Great ?

13. Lots of Apps with very few Ratings

14. Most apps are Average

16. More Raters => Steady Ratings

19. Dimensions of Study Design