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Crowdsourcing & Social Networks. Shrenik Sadalgi Spring 2010 COMS E6125 Web-enHanced Information Management Columbia University. Introduction. - PowerPoint PPT Presentation
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Crowdsourcing & Social NetworksShrenik Sadalgi
Spring 2010COMS E6125 Web-enHanced Information Management
Columbia University
Introduction
“Crowdsourcing is a neologistic compound of Crowd and Outsourcing for the act of taking tasks traditionally performed by an employee or contractor, and outsourcing them to a group of people or community, through an "open call" to a large group of people (a crowd) asking for contributions”
-Wikipedia
Examples of Crowdsourcing
Examples of Crowdsourcing
Examples of Crowdsourcing
Problem OwnerMe
ProblemWriting the paper
TasksCreating content for a section of the paper
ParticipantsFriends / Random People
Solution Writing a sub-section of the paper
Incentive Authorship
Crowdsourcing my WHIM paper / presentation content
Architectures of CrowdsourcingOne Problem Multiple Participants Multiple Tasks Multiple Participants
Web 2.0 and the Rise of Crowdsourcing
http://whitehallplc.files.wordpress.com/2009/01/screen-capture-1.jpg
Web 2.0 and the Rise of Crowdsourcing
Architectures of Participation
Web 2.0 and the Rise of Crowdsourcing
User Generated Content
AJAX and the emergence of Web Services
Web 2.0 and the Rise of Crowdsourcing
Acting independently, but collectively
Web 2.0 and the Rise of Crowdsourcing
• Acts as a destination hub for individuals to establish relationships with co-workers and by doing so, enable them to jointly build, or expand, their professional and social networks
• Includes different tools for people to interact with each other, contribute information to the site, participate in different site activities, and build a sense of community in an informal and voluntary manner
Crowdsourcing & Social Networks
Crowdsourcing Social Networks
• Acts as a destination hub for individuals seeking to either add value or earn some money
• A tool for solving the problem and collecting the solution from the participants if the problem is solvable online in a short period of time (in the order of minutes)
• Need not have any tools for participants to interact with each other and collaborate
iOu
Crowdsourcing over Social Networks
Problem Owner – Borrower (User)
Problem – Financing $100
Tasks – Financing $1
Participants – Friends and Friends of Friends of Borrower (User)
Solution – Lending $1 to the Borrower
Incentive – None for small amounts (feel good factor) / Payback with or without Interest /
Services / Return of favor someday
Problem Owner – Answer Seeker (User)
Problem – Question
Participants – 1st, 2nd ,3rd Nth degree of contacts of the answer seeker (User)
Solution – Answer to question
Incentive – Return of favor someday (someone will answer a question asked by an answer
provider)
Ask
iOu
API Support
• Retrieve the social graph of a user (List of first degree contacts (friends), second degree contacts (friends of friends), Nth degree contacts)• friends.get - Returns the identifiers for
the current user's Facebook friends
• Send and receive messages between users• None – Only communication through
wall posts, comments & events
• Retrieve the social graph of a user (List of first degree contacts (friends), second degree contacts (friends of friends), Nth degree contacts)• followers/ids - Returns an array of
numeric IDs for every user following the specified user
• Send and receive messages between users• direct_messages/new - Sends a new
direct message to the specified user from the authenticating user
• search - Returns tweets that match a specified query
Ask
Identifying Experts
Social Interaction / Collaboration
Quality control
Scalability
Trusting the Crowd – Wisdom of the Crowd
Advantages of Crowdsourcing over Social Networks
Thank You