[Moims-dai] Reminder of Skype call tomorrow

David Giaretta david at giaretta.org
Wed May 29 11:16:42 UTC 2019

Hi John


I took an action to find the following text from the update of OAIS:  Representation Information

The Representation Information accompanying a digital object, or sequence of bits, is used to provide additional meaning. It typically maps the bits into commonly recognized data types such as character, integer, and real and into groups of these data types. It associates these with higher-level meanings: this includes the description of the, possibly complex, ways objects are interrelated (for example, Representation Information could indicate that three numbers represent temperature, latitude and longitude; and they are expressed in degrees Celsius and angular degrees; and they are interrelated in that the temperature is measured at the specified longitude/latitude).

The Representation Information accompanying a physical object like a moon rock may give additional meaning, as a result of some analysis, to the physically observable attributes of the rock. This information may have been developed over time and the results, if provided, would be part of the Information Object.

There will be special cases where, for a specific Data Object and a specific Designated Community, the Knowledge Base of the Designated Community is adequate for its members to understand or use the Data Object. In such cases the Representation Information could be the statement that no additional Representation Information is needed for that specific Designated Community at this time. Of course, the Knowledge Base of the Designated Community may change over time and additional Representation Information may then be required. In order to satisfy the Mandatory Requirements, the Archive should ensure that appropriate Representation Information will be available in future, for example details of specific software required or semantics, such as the meaning of spreadsheet columns, which are currently common knowledge. Therefore, any Representation Information that can be gathered at ingest should be included since it will likely be costlier to rediscover and add it at a later time.






From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of David Giaretta
Sent: 27 May 2019 20:28
To: MOIMS-DAI List <moims-dai at mailman.ccsds.org>
Subject: [Moims-dai] Reminder of Skype call tomorrow



Meeting: 10:00 Tuesday (EST), 1500 UK time, 1600 European time 


Join it by clicking the link:



*Don't have Skype yet? Download it before you join https://www.skype.com


General schedule:

Tuesday of the month


Technical Editor(s)


ISO 16363    Audit and Certification Metrics

John Garrett, David Giaretta


IPELTU Info Preservation Enabling Long-Term Usage

David Giaretta


OAIS-IF DAADD    OAIS Interoperability Framework – Digital Archive Architecture Design Doc

Steve Hughes


OAIS update finalization, Group administration, Planning, new projects, or special issues identified other weeks



OAIS update finalization, Group administration, Planning, new projects, or special issues identified other weeks




Draft agenda this week (1st Tuesday of the month):

1.	Status of OAIS v3 draft – see https://www.dropbox.com/s/78ll3rtmjdqkmrb/OAIS%20final%20v3%20draft%20with%20changes%20wrt%20OAISv2%2020190425_bbh_dg2.docx?dl=0. Responding with Brigitte’s comments
2.	OAIS-IF design document












-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ccsds.org/pipermail/moims-dai/attachments/20190529/a8eb72e5/attachment.html>

More information about the MOIMS-DAI mailing list