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NDSA-STANDARDS  September 2012, Week 3

NDSA-STANDARDS September 2012, Week 3

Subject:

Re: Status report on Digital Preservation Wikipedia article

From:

Mark Evans <[log in to unmask]>

Reply-To:

The NDSA Standards working group list <[log in to unmask]>

Date:

Tue, 18 Sep 2012 19:57:16 -0400

Content-Type:

multipart/related

Parts/Attachments:

Parts/Attachments

text/plain (141 lines) , image/gif (141 lines) , image/gif (141 lines)

Hi,

Some comments on the wiki content:

I would add Normalization to the set of preservation strategies. Many 
organizations are implementing a policy of specifying a small number of 
formats that they will accept and provide preservation services for, In 
order to fully enforce this policy they may have to implement 
normalization services - this is really a flavor of migration in that they 
migrate a variety of formats for a specific content type to a normalized 
format. For example they may receive a variety of image formats (jpg, gif, 
tiff, bmp etc) and migrate them all to a common form  (e.g. png) This 
strategy is normally applied during ingest, with the option to also retain 
the original.

I would remove the comment about Lockheed Martin and the ERA project. 
Lockheed Martin is no longer the prime contractor and preservation 
capabilities were not implemented during their tenure.
However it is generally accepted that neither migration or emulation on 
their own will provide a comprehensive preservation solution for all 
content types. 

Another thought on migration - In many cases a migration is a 1-1 process 
. i.e 1 file in and 1 file out. However there are existing cases where the 
number of resulting digital objects that are created as a result of a 
migration activity may be different from the original set.. For example 
consider the case where a web page (multiple files, html, images etc)  are 
migrated to a PDF file. This means that we really should be focused on 
preserving the "informational" content rather than the digital 
representation. i,e. the digital files are simply a representation of the 
informational content,

Hope you find this input useful.

Regards
Mark


 


Mark Evans
Digital Archiving Practice Manager
Tessella
51 Monroe Street, Suite 702, Rockville, MD 20850, USA 
T: (1) 240 403-7502     C: (1) 240 401 6256    F: (1) 240 403-7507 
E: [log in to unmask] 
W: www.digital-preservation.com
 
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Dina Sokolova <[log in to unmask]> 
Sent by: The NDSA Standards working group list 
<[log in to unmask]>
09/18/2012 01:57 PM
Please respond to
The NDSA Standards working group list 
<[log in to unmask]>


To
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Subject
[NDSA-STANDARDS] Status report on Digital Preservation Wikipedia article






Hello All,

We have been continuing our work on Wikipedia Digital Preservation 
article and would like to update you with the recent changes we made 
to it:

    - We've replaced introductory paragraphs with Definition 
(
http://en.wikipedia.org/w/index.php?title=Digital_preservation&pe=1&#Digital_preservation
) and "Challenges of digital 
preservation"
(
http://en.wikipedia.org/w/index.php?title=Digital_preservation&pe=1&#Challenges_of_digital_preservation
)

    - We've edited down the OAIS paragraph of "Digital preservation 
standards" section because it duplicated the referenced Wikipedia OAIS 
article:
http://en.wikipedia.org/w/index.php?title=Digital_preservation&pe=1&#Digital_preservation_standards


    - We've edited the related OAIS article, correcting the text of 
"The reference model" and "Requirements of the system" sections and 
updating citations and references:
http://en.wikipedia.org//w/index.php?title=Open_Archival_Information_System&pe=1&#The_reference_model


Any comments and suggestions are welcome.

Thanks,
Stephen & Dina


-- 
Dina Sokolova
Digital Preservation Librarian
Libraries Digital Programs Division
Columbia University
212-854-4979
[log in to unmask]

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