The Economics of Community Open Source Software Projects: An Empirical Analysis of Maintenance Effort

Table 1

Types of operations on source code.

		Δ𝐹𝑘(𝑖,𝑖−1)
		<0	=0	>0
ΔSLOC𝑘(𝑖,𝑖−1)	≤0	[X]	[A]	[B]
		interface rationalization	refactoring	predominantly refactoring
	>0	[X]	[C]	[D]
		interface rationalization	predominantly development	development