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Methodology
Empirical Investigation of Stack Overflow Usage (2009-2011)
Empirical Investigation of Android, Chrome, Mozilla, and Launchpad BTS
Empirical
Investigation
Collaborative Filtering
Rewards
Participation
Moderation System
Towards Improving BTS with Game Mechanisms
Problem
Conflicts
OSS projects employ conflict management teams to maintain and grow a healthy community
Poor quality contributions
Information overload
Overcome conflicts through:
- a conflict management system
- motivating participation
Only 30% of bugs are fixed:
- can we improve bug report quality?
- which bugs and comments should developers look at?
Contributions
- First systematic study of GM in SW dev. ecosystem
- Shows that GM can:
- increase contribution quality and participation rates
- improve filtering and moderation mechanisms
poor quality contributions
conflicts
Today, the best real SW dev. ecosystem using game mechanisms
Targeted to allow SW devs. to resolve SW dev. problems
Shares the same concerns as BTS
Rafael Lotufo
Leonardo Passos
Krzysztof Czarnecki
Conclusion
SO's game mechanisms:
- can motivate SW devs to increase participation rates and contribution quality
- provide filtering and moderation mechanisms
Benefits of SO's game mechanisms should be readily accessible to BTS
Which other SE ecosystems or processes can be enhanced by game mechanisms?
University of Waterloo
Democratic System
Votes are effective for filtering since SO is a democracy
In BTS, votes are not so effective, since developers decide which bugs get fixed.
enables
Voting
Questions and answers
Two good filters: author reputation and votes. Number of votes has 20% better precision for detecting the best answer.
Votes are effective at indicating the importance of a question
Users interested in earning reputation and privileges
increases
Quality
Reputation points
Reputation levels
Privileges
re-tag questions
approve tag edits
vote to close and reopen questions
Bounty questions:
- receive 50% more answers
- are 10% more likely to resolved
There is a 63% chance that users will delete their own posts if it receives 3 or more down-votes.
edit questions and answers
create chat-rooms
create tags
Future work: tailoring a reputation and rewards systems for different projects
Participation frequency
increases if rewards are well planned
creates
Moderation system is created by awarding users with moderation privileges.
Mass of users with ability to flag inappropriate contributions to the attention of users with enough privileges to take action
Agile and dependable