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An Empirical Study on the Impact of Change Granularity in Refactoring Detection
Lei Chen, Shinpei Hayashi
Detecting refactorings in commit history is essential to improve comprehension to code changes on code reviews, and to provide valuable information for empirical studies on softwar…
ChangePrism: Visualizing the Essence of Code Changes
Lei Chen, Michele Lanza, Shinpei Hayashi
Understanding the changes made by developers when they submit a pull request and/or perform a commit on a repository is a crucial activity in software maintenance and evolution. Th…
How Much Can a Behavior-Preserving Changeset Be Decomposed into Refactoring Operations?
Kota Someya, Lei Chen, Michael J. Decker +1
Developers sometimes mix behavior-preserving modifications, such as refactorings, with behavior-altering modifications, such as feature additions. Several approaches have been prop…
Understanding Code Change with Micro-Changes
Lei Chen, Michele Lanza, Shinpei Hayashi
A crucial activity in software maintenance and evolution is the comprehension of the changes performed by developers, when they submit a pull request and/or perform a commit on the…
MORCoRA: Multi-Objective Refactoring Recommendation Considering Review Availability
Lei Chen, Shinpei Hayashi
Background: Search-based refactoring involves searching for a sequence of refactorings to achieve specific objectives. Although a typical objective is improving code quality, a dif…