Software risk management
Peopleware (2nd ed.): productive projects and teams
Peopleware (2nd ed.): productive projects and teams
The processes of joining in global distributed software projects
Proceedings of the 2006 international workshop on Global software development for the practitioner
Wikinomics: How Mass Collaboration Changes Everything
Wikinomics: How Mass Collaboration Changes Everything
Data Analysis and Graphics Using R: An Example-based Approach (Cambridge Series in Statistical and Probabilistic Mathematics)
The Wealth of Networks: How Social Production Transforms Markets and Freedom
The Wealth of Networks: How Social Production Transforms Markets and Freedom
Quantitative analysis of thewikipedia community of users
Proceedings of the 2007 international symposium on Wikis
On the Inequality of Contributions to Wikipedia
HICSS '08 Proceedings of the Proceedings of the 41st Annual Hawaii International Conference on System Sciences
The collaborative organization of knowledge
Communications of the ACM - Designing games with a purpose
Survival analysis on the duration of open source projects
Information and Software Technology
A bounded confidence approach to understanding user participation in peer production systems
SocInfo'11 Proceedings of the Third international conference on Social informatics
Contributing to Wikipedia: Through Content or Social Interaction?
International Journal of Distributed Systems and Technologies
How long do Wikipedia editors keep active?
Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration
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Open collaborative projects, like FLOSS development projects and open content creation projects (e.g. Wikipedia), heavily depend on contributions from their respective communities to improve. In this context, an important question for both researchers and practitioners is: what is the expected lifetime of contributors in a community? Answering this question, we will be able to characterize these communities as an appropriate model can show whether or not users maintain their interest to contribute, for how long we could expect them to collaborate and, as a result, improve the organization and management of the project. In this paper, we demonstrate that survival analysis, a wellknown statistical methodology in other research areas such as epidemiology, biology or demographic studies, is a useful methodology to undertake a quantitative comparison of the lifetime of contributors in open collaborative initiatives, like the development of FLOSS projects and the Wikipedia, providing insightful answers to this challenging question.