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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoTitle align=center style='text-align:center'><span lang=EN-US>Notes on Vint Cerf discussions on Digital Preservation with CCSDS-DAI<o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-size:14.0pt;line-height:106%'>5<sup>th</sup> April 2016<o:p></o:p></span></p><h1><span lang=EN-US>Vint Cerf – points made<o:p></o:p></span></h1><p class=MsoListParagraphCxSpFirst style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>He described the value of having read, so far, the first 300 pages of David Giaretta’s book, Advanced Digital Preservation (</span><span lang=EN-US><a href="http://www.springer.com/us/book/9783642168086"><span style='font-size:12.0pt;line-height:106%'>http://www.springer.com/us/book/9783642168086</span></a></span><span lang=EN-US style='font-size:12.0pt;line-height:106%'>).<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>He has some knowledge of our ISO work with OAIS Reference Model, Trustworthy Digital Repositories, Audit and Certification of TDRs, etc.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>He acknowledges that emulation is only one tool at best.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>“Digital Vellum” focused primarily on relatively simple electronic documents, software, and games. <o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='margin-left:72.0pt;mso-add-space:auto;text-indent:-18.0pt;mso-list:l1 level2 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Mike Kearney has requested Vint Cerf’s slides<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='margin-left:72.0pt;mso-add-space:auto;text-indent:-18.0pt;mso-list:l1 level2 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Digital Vellum presentation: (</span><span lang=EN-US><a href="https://ecolloq.gsfc.nasa.gov/Current/announce.cerf.html"><span style='font-size:12.0pt;line-height:106%'>https://ecolloq.gsfc.nasa.gov/Current/announce.cerf.html</span></a></span><span lang=EN-US style='font-size:12.0pt;line-height:106%'>)<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='margin-left:72.0pt;mso-add-space:auto;text-indent:-18.0pt;mso-list:l1 level2 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Similar presentation at: </span><span lang=EN-US><a href="https://www.youtube.com/watch?v=STeLOogWqWk"><span style='font-size:12.0pt;line-height:106%'>https://www.youtube.com/watch?v=STeLOogWqWk</span></a></span><span lang=EN-US style='font-size:12.0pt;line-height:106%'><o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Compound digital objects present special problems.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Interoperability is a key requirement. Mashing up emulated data with current data is problematic. He believes we need to demonstrate multiple trustworthy digital repositories that can interoperate to move the adoption of the standards forward.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>He has no suggestions for a business model for keeping the data usable for as long as it is needed.<o:p></o:p></span></p><p class=MsoListParagraphCxSpLast style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Google is working in collaboration with the Computer History Museum collecting software much like the NIST NSRL.<o:p></o:p></span></p><h1><span lang=EN-US>Discussions arising from Vint Cerf’s comments – most after he left:<o:p></o:p></span></h1><p class=MsoListParagraphCxSpFirst style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>The OAIS concept of Representation Information provides a general approach to interoperability. However more specific standards such as EAST or DEDSL can be used to provide some of the detailed Representation Information required.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>The users of two repositories with the same Designated Community should be able to understand information they exchange, at least for members of that Designated Community.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Bruce noted that Vint seemed to be presuming that all digital repositories want to be interoperable, which they may not. DG noted that this could also be viewed as a way to increase the value of the information and hence help to justify preservation.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>A related but less specific aspect of interoperability would be for us to develop a formal API definition for the OAIS Archival Information Package (AIP)– based on the UML diagrams in OAIS. This would at least help to ensure that repositories can exchange AIPs and extract the data, Representation Information etc.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>The document DAI is working on currently will help in guiding the capture of information needed to exploit (including interoperating with other data) data being created.<o:p></o:p></span></p><p class=MsoListParagraphCxSpMiddle style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>We could try to map DAI’s work and existing books to a more “protocol-like” view. For example, PAIS includes the definition of an information package which can be sent from a Producer to an archive, and the management processes required to organize this exchange.<o:p></o:p></span></p><p class=MsoListParagraphCxSpLast style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US style='font-size:12.0pt;line-height:106%;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:12.0pt;line-height:106%'>Mike Kearney asked if there are any services from DAI which SANA could host. David suggested that it would be possible for SANA to host an authoritative Registry of Representation Information; he has an example which is simply a webserver with a few very small scripts.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>