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AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014 AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014 Transformational Impact of Cloud Labor John Hoskins & Daniel Gray [email protected] [email protected]
17

Best Practices for Mechanical Turk

Jan 15, 2015

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John Hoskins

AWS World Wide Public Sector Mechanical Turk workshop session 3, best practices for converting workflows to Mechanical Turk
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Page 1: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Transformational Impact of Cloud Labor

John Hoskins & Daniel [email protected]

[email protected]

Page 2: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Crowdsourcing Best Practices

amazonweb services

Page 3: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Crowdsourcing myths

Page 4: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

• It’s cheaper– It’s actually more efficient

• It’s faster– It’s actually more scalable

• It’s not accurate– It’s actually more accurate

The Myths[ ]

Page 5: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

5

Crowdsourcing Best Practices

Page 6: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

• Consider the question carefully– Workers answer what you ask

• Select your workers– Perspective and skills vary

• Iterate and Optimize– Adjust for optimal results

Page 7: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

The question[ ]7

You will get an answer to the question that you ask. Focus on asking the right question

Page 8: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Choosing your workers[ ]8

Workers are different– from language and cultural differences – to varying skills. Test and monitor.

Page 9: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Monitor and Improve[ ]9

Monitor key metrics, adjust and measure key attributes impact on those metrics.

Page 10: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

• Accuracy– Know your current

• Throughput– Understand both turnaround and scale requirements

• Cost– Measure against a budget – as cost can impact the other two

Key Metrics[ ]10

“Great service, Good food, Friendly staff – you can choose two”

Page 11: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Cost[ ]11

Cost is impacted most by the efficiency of the other two metrics.

Page 12: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Accuracy[ ]12

Error has two sources: human and systematic. Isolating human error and solving for systematic error gives a better chance for long term success.

Page 13: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Accuracy[ ]13

After solving for systematic error choosing the best workers and monitoring those workers provides the next step towards high accuracy and lowering costs.

Page 14: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Throughput[ ]14

Many factors impact throughput;

Reputation

Ergonomics

Clarity

Page 15: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

http://www.mturk.com

15

John Hoskins, Amazon Mechanical Turk

[email protected]

amazonweb services

Page 16: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Cost[ ]16

Cost is impacted most by the efficiency of

the other two metrics.

Optimization of task and workers lowers

both the cost of getting it done and

adjudicating a result.

Page 17: Best Practices for Mechanical Turk

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

AWS Government, Education, and Nonprofits Symposium Washington, DC | June 24, 2014 - June 26, 2014

Thank You