Documentation Metrics


All metrics used in the quality model are described thereafter, with useful information and references. They are classified according to their source. Please note also that several other metrics may be retrieved but not used in the quality model.



  • ML authors ( MLS_SENDERS_30 )

    Provided by: EclipseMls

    Used by: QM_DIVERSITY

    Scale: 1 < 1.5 ≤ 2 < 3 ≤ 3 < 7.5 ≤ 4 < 26 ≤ 5

    Number of distinct senders for messages dated during the last month, in developer mailing list archives.

    Developer mailing list is the list or lists considered as 'for developers' in the project documentation. The date used is the mailing list server date, as stamped in the message. Time range is measured as three calendar months period starting the day before the data retrieval (example: if retrieval is on Feb 3rd, period is from Jan 3rd to Feb 2nd, both included). Distinct senders are those with distinct email addresses. Email addresses used are the strings found in 'From:' fields in messages.

    Note that developer communications are measured through the mailing list, and user communications are measured through the forums.

  • ML posts ( MLS_SENT_30 )

    Provided by: EclipseMls

    Used by: QM_ACTIVITY

    Scale: 1 < 2 ≤ 2 < 6 ≤ 3 < 22 ≤ 4 < 103 ≤ 5

    Number of messages dated during the last month, in developer mailing list archives.

    Developer mailing list is the list or lists considered as 'for developers' in the project documentation. The date used is the mailing list server date, as stamped in the message. Time range is measured as one calendar month period starting the day before the data retrieval (example: if retrieval is on Feb 3rd, period is from Jan 3rd to Feb 2nd, both included).

    Note that developer communications are measured through the mailing list, and user communications are measured through the forums.

  • ML sent responses ( MLS_SENT_RESPONSE )

    Provided by: EclipseMls

    Used by: QM_SUPPORT

    Scale: 1 < 2 ≤ 2 < 6 ≤ 3 < 22 ≤ 4 < 103 ≤ 5

    Number of responses (i.e. replies in a thread) in developer mailing list archives.

    Threads are identified using 'In-Reply-To' message headers. Developer mailing list is the list or lists considered as 'for developers' in the project documentation.

    Note that developer communications are measured through the mailing list, and user communications are measured through the forums.

  • ML threads ( MLS_THREADS )

    Provided by: EclipseMls

    Used by: QM_SUPPORT

    Scale: 1 < 2 ≤ 2 < 6 ≤ 3 < 22 ≤ 4 < 103 ≤ 5

    Number of threads (i.e. an email and its replies) in developer mailing list archives.

    Threads are identified using 'In-Reply-To' message headers. Developer mailing list is the list or lists considered as 'for developers' in the project documentation.

    Note that developer communications are measured through the mailing list, and user communications are measured through the forums.


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