Final revision check & Scoping of future work

[ulizue]

Final read-through to ensure

• clear/consistent description of methods and findings,
• well-formulated conclusions that are well-supported by data,
• accurate definition of utilised concepts,
• appropriate referencing.

Potential addition/extension: Discuss whether to highlight more the complementary meaning/interpretation of the two measured innovation metrics and their respective time evolution. Calculate/compare rates of change?

Recently added notable references:

• Brown et al., Measuring Software Innovation with Open Source Software Development Data: supports idea that major releases (as per semantic versioning) are true innovation steps on par with scientific articles, patents and standards; upto-date lit overview on innovation measures in OSS; interesting for follow-up: a suggested innovation metric is the dependents-dependencies ratio for a component (Sec 4.2.2)
• Zerouali et al., On the Diversity of Software Package Popularity Metrics: An Empirical Study of npm: lit overview and empirical exploration for popularity metrics in SECOs

Follow-up ideas/inspiration for future work:

• Sec II in Jaime et al., Navigating and Exploring Software Dependency Graphs using Goblin: especially items 1)a-e, 2)a,b, 3)a-d, 5)a-e. Also follow up on Refs. [1,2] in that paper.
• Cataldo et al., A complex networks perspective on collaborative software engineering: intro to special-topic issue on network analysis of OSS structures/ecosystems
• Mens and Constantinou, Software ecosystem evolution: It's complex! a short paper and a presentation: highly inspirational discussion of basic concepts and methods