Based on the criteria proposed in On the reproducibility of empirical software engineering studies based on data retrieved from development repositories (Open Access - Empirical Software Engineering, Volume 17, Numbers 1-2, 75-89), the attributes of this study are given in following table:

Details

• Identification:
  • GNOME repository (http://git.gnome.org/browse/)
  • Apache repository (http://www.apache.org/dev/version-control.html#source-code-repositories)
• Description:
  • GNOME repository: detailed description at http://git-scm.com. Note that at the time of the analysis, we used the GNOME Subversion repository (see Study Parameters). Previously migrated from CVS, January 2007, preserving history of commits and committers.
  • Apache repository: detailed description at http://subversion.apache.org/.
• Availability: Public.
• Persistence: Yes.

Retrieval Methodology

• Identification: Carnarvon
• Description:
  • Carnarvon (http://carnarvon.tigris.org/) analyses how old the software system is on a per-line basis and extracts figures and indexes that make it possible to identify how "old" the software is, how much it has been maintained and how much effort it may suppose to maintain it in the future.
• Availability: Public
  • Carnarvon 0.7.4c: http://carnarvon.tigris.org/files/documents/4101/33327/carnarvon-0.7.4c.tar.gz
• Persistence: Yes.
• Flexibility: Yes. Carnarvon 0.7.4c is released under the GPLv2 or later.

• Identification: Databases
• Description:
  • Function evolution data for Apache 1.3
  • Function evolution data for Evolution
  • Carnarvon blame output for Apache 1.3
  • Carnarvon blame output for Evolution
• Availability: Public.
  • PostgreSQL dump for function evolution data for Apache 1.3: apache13.sql.bz2 (1,5 MB)
  • PostgreSQL dump for function evolution data for Evolution: evolution.sql.bz2 (7,5 MB)
  • MySQL dump of the carnarvon output for Evolution: carnarvon_dizquierdo_evolution.sql.bz2 (138 MB)
  • MySQL dump of the carnarvon output for Apache: carnarvon_dizquierdo_apache.sql.bz2 (TBD)
• Persistence: Yes.
• Flexibility: Yes.

• Identification: Carnarvon
• Description:
  • Carnarvon (http://carnarvon.tigris.org/) analyses how old the software system is on a per-line basis and extracts figures and indexes that make it possible to identify how "old" the software is, how much it has been maintained and how much effort it may suppose to maintain it in the future.
• Availability: Public
  • Carnarvon 0.7.4c: http://carnarvon.tigris.org/files/documents/4101/33327/carnarvon-0.7.4c.tar.gz
• Persistence: Yes.
• Flexibility: Yes. Carnarvon 0.7.4c is released under the GPLv2 or later.

• Identification: Date of data retrieval.
• Description: Date when the repositories were retrieved. Can be obtained from the database dumps using the MySQL MAX() function.

• Identification: Databases
• Description:
  • The Carnarvon blame output for Apache 1.3 and Evolution has been enriched with several additional tables with the help of the analysis Python scripts. In order to avoid duplication, only one database has been released and is available under the Raw Dataset.
• Availability: Public. See Raw Dataset.
• Persistence: Yes.
• Flexibility: Yes. All of them are SQL files.

• Identification: Scripts
• Description:
  • Set of SQL, R and perl scripts to test hypotheses #1 and #2.
  • Set of Python scripts used to query the database and analyse the data to test hypotheses #3 and #4 of the paper.
• Availability: Public
  • Sripts for testing Hypotheses #1 and #2: other.tar.gz (830KB)
  • Python scripts for testing Hypotheses #3 and #4: analysis-3-and-4.tar.gz (515KB; see README.txt for details)
• Persistence: Yes.
• Flexibility: Yes. All Python scripts have been released under the GPLv3.

• Identification: Results tables.
• Description: for Apache and Evolution, following files are available:
  • permonth.txt: Statistics on a per month basis
  • changesHist.txt: Statistics per number of changes
  • freqAuthors.txt: Statistics per committer
  • *FunctionsStats.txt: Statistics per function
  • statsFunctions.txt: (more) Statistics per function
• Availability: Public.
  • results.tar.gz (1863KB)
• Persistence: Yes.
• Flexibility: Yes. All of them are text files with structure.