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Alex Quinnwww.cs.umd.edu/~aq
aq@cs.umd.edu
Crowdsourcing to Build Lists of Things
make a list of ….
Photo: Wikipedia
Relay
Ramen noodle shops in Kobe, Japan
Ramen noodle shops in Kobe, Japan
Professors researching online education
Professors researching online education
Articles about food safety
Articles about food safety
Cost
# of items cost per item hourly rate
Ramenentered 105 $0.15 / item
$6.95 / hourgood 69 $0.28 / item
Professorsentered 155 $0.20 / item
$6.91 / hourgood 131 $0.27 / item
Articlesentered 661 $0.20 / item
$13.93 / hourgood 420 $0.32 / item
Ideas
Design to facilitate clean, unique data items
For unbounded tasks, give workers just enough information about what the others are doing
Crowdsourcing lets you buy time with money
Crowd workers are workers; pay fairly
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