An Exploratory Study of Project Activity Changepoints in Open Source Software Evolution

by   James Walden, et al.

To explore the prevalence of abrupt changes (changepoints) in open source project activity, we assembled a dataset of 8,919 projects from the World of Code. Projects were selected based on age, number of commits, and number of authors. Using the nonparametric PELT algorithm, we identified changepoints in project activity time series, finding that more than 90 between one and six changepoints. Increases and decreases in project activity occurred with roughly equal frequency. While most changes are relatively small, on the order of a few authors or few dozen commits per month, there were long tails of much larger project activity changes. In future work, we plan to focus on larger changes to search for common open source lifecycle patterns as well as common responses to external events.



There are no comments yet.


page 2


The Impact of a Major Security Event on an Open Source Project: The Case of OpenSSL

Context: The Heartbleed vulnerability brought OpenSSL to international a...

New developer metrics: Are comments as crucial as code contributions?

Open-source code development has become widespread in recent years. As a...

What is the Connection Between Issues, Bugs, and Enhancements? (Lessons Learned from 800+ Software Projects)

Agile teams juggle multiple tasks so professionals are often assigned to...

A decentralized method for making sensor measurements tamper-proof to support open science applications

Open science has become a synonym for modern, digital and inclusive scie...

Identity Preserve Transform: Understand What Activity Classification Models Have Learnt

Activity classification has observed great success recently. The perform...

CORRECT: Code Reviewer Recommendation in GitHub Based on Cross-Project and Technology Experience

Peer code review locates common coding rule violations and simple logica...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.