Stanford Data Mining Amazon GoogleCaseStudy - 100ms - Greg Linden

The famous study about how reducing page-loading speed increases sales.

1. Make Data Useful
Greg Linden

2. “[Help] people find and
discover anything they
want to buy online”
- Jeff Bezos

3. Help people find and
discover anything
online

4. “Encourage
experimentation ... as much
of it as possible”
- Jeff Bezos

5. What is the goal?
Revenue
Traffic
Visitors
Retention
Customer acquisition
Time on site
Clicks

6. Measure
Learn
Optimize
Iterate

7. “Worry about the data first
before you worry about the
algorithm”
- Peter Norvig

8. [Banko and
Brill, 2001]

9. On the design of
recommendation
features

10. Design to encourage
forgiveness of mistakes

11. Help when help is wanted

12. “Discovery is when something
wonderful that you didn't know
existed, or didn't know how to
ask for, finds you.”
- Fortune Magazine

13. Discovery of the new
and surprising using
the recent

14. “Users really respond to
speed.”
- Marissa Mayer

15. +500 ms -20% traffic
@ Google
+100 ms -1% sales
@ Amazon

16. Speed matters!

17. •Measure, then optimize toward a goal
•Big data first, then algorithms
•Encourage users to forgive you
•Help when help is wanted
•Surprise and focus on the new
•Speed matters