Scientific Programming / 2019 / Article / Tab 2

Research Article

Local versus Global Models for Just-In-Time Software Defect Prediction

Table 2

The description of metrics.

DimensionMetricDescription

DiffusionNSNumber of modified subsystems
NDNumber of modified directories
NFNumber of modified files
EntropyDistribution of modified code across each file

SizeLALines of code added
LDLines of code deleted
LTLines of code in a file before the change

PurposeFIXWhether or not the change is a defect fix

HistoryNDEVNumber of developers that changed the files
AGEAverage time interval between the last and the current change
NUCNumber of unique last changes to the files

ExperienceEXPDeveloper experience
REXPRecent developer experience
SEXPDeveloper experience on a subsystem

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