Fat tails, long memory, maturity and ageing in open-source software projects
- Challet, Damien Institute for Scientifc Interchange (ISI), Torino, Italy - Physics department, University of Fribourg, Switzerland
- Valverde, Sergi ICREA-Complex Systems Lab, Pompeu Fabra University, Barcelona, Spain - Centre de Recherches sur la Cognition Animale, CNRS-UMR, Université Paul Sabatier, Toulouse, France
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2008
English
We report activity data analysis on several open source software projects, focusing on time between modifications and on the number of files modified at once. Both have fat-tailed distributions, long-term memory, and display systematic non-trivial cross-correlations, suggesting that quiet periods are followed by cascading modifications. In addition the maturity of a software project can be measured from the exponent of the distribution of inter-modification time. Finally, the dynamics of a single file displays ageing, the average rate of modifications decaying as a function of time following a power-law.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 8906
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300597
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