Background
Crowdsourcing essentials
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Requester An individual, an institution, a non-profit organization, or a company that has a problem to be solved or tasks to be completed
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Task The work to be done which is of variable complexity and modularity
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Crowd A group of individuals of varying knowledge, heterogeneity, and number who provides solutions or completes tasks; also known as workers
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Platform An application that provides crowdsourcing functionalities related to crowd and task management
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Incentive Satisfaction of a given type of need, be it economic, social recognition, self-esteem, or the development of individual skills
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Solution What the user has brought to the venture
Crowdsourcing platforms
Paid platforms examples
Unpaid platforms examples
Unpaid crowdsourcing
Citizen science
Disaster response and relief
Traffic management
Education
Comparison of paid and unpaid crowdsourcing
Case study 1: sentiment analysis
Paid version
Unpaid version
Results
Paid | Unpaid | |
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Crowd cost (USD) | 15.35 | 0.00 |
Completion time (hours) | 2.90 | 44.80 |
Precision | 76.08 | 76.32 |
Paid | Unpaid | |
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Crowd cost (USD) | 6.36 | 0.00 |
Completion time (hours) | 2.30 | 228 |
Precision | 27.05 | 89.61 |