xfree

This is a PROMISE Software Engineering Repository data set made publicly available in order to encourage repeatable, verifiable, refutable, and/or improvable predictive models of software engineering.

Title: XFree86 Repository Transaction Data

Sources: (a) Original creators of database: Bart Massey 01 503 725-5393 Computer Science Dept. PO Box 751 MS CMPS Portland State University Portland, OR USA 97207-0751 [e-mail]

(b) Donor of database: owner

(c) Date received: 31 March 2005

Past Usage: none

Relevant Information:

This dataset was assembled by analyzing the publicly-available CVS archives of the XFree86 Project http://xfree86.org)) using a modified version of CVSAnalY (https://github.com/MetricsGrimoire/CVSAnalY) It is intended for a wide variety of uses, and thus no dependent variable is specified. See Massey's PROMISE 2005 paper, "Longitudinal Analysis of Long-Timescale Open Source Repository Data", for further information. Note that on 487 occasions, a negative lines-added count was recorded by CVSAnalY, apparently due to a bug. These entries should probably be repaired or at least filtered out.

Number of Instances: 175658

Number of Attributes: 10 (incl. 2 inferred)

Attribute information:

Inferred filetype:

non-numeric—nominal

9 values (documentation,images,i18n,ui,multimedia,code,build,devel-doc,unknown)

File Pathname: UNIX relative path name

non-numeric—structured

1935 directories, 27009 files

Revision: dotted-decimal revision string

non-numeric—structured

7182 unique revision numbers

Author ID: integer identifier

non-numeric—nominal

21 unique authors

Lines added: integer

numeric—integer

MIN: 0 MAX: 699789 MEAN: 124.274 STDEV: 2450.66

MIN: 0 MAX: 70554 MEAN: 41.3577 STDEV: 407.737

(excl. images, multimedia)

Note: on 487 occasions, a negative lines-added count was recorded by CVSAnalY, apparently due to a bug. In the summary statistics reported in this comment, these additions are not counted.

Lines removed: integer

numeric—integer

MIN: 0 MAX: 123751 MEAN: 27.8503 STDEV: 624.008

MIN: 0 MAX: 55664 MEAN: 17.3073 STDEV: 294.047

(excl. images, multimedia)

File has since been removed ("in Attic"): boolean (0, 1)

non-numeric—nominal

40.67% positive

Commit has CVS_SILENT flag: boolean (0, 1)

non-numeric—nominal

never set

Inferred that committer was not author: boolean (0, 1)

non-numeric—nominal

1.04% positive

Commit date: date

MIN: "1994-04-27 07:07:10" MAX: "2005-02-19 02:22:07"

Note: CVS has trouble with timezones; we assume all dates are UTC.

Missing Attribute Values:

unknown inferred filetype (attr 1): 18719

Class Distribution: N/A