Uniform Access to Raw Mementos

Martin Klein
Martin KleinLos Alamos National Laboratory
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
Uniform Access to Raw Mementos
Herbert Van de Sompel1, Michael L. Nelson2, Lyudmila Balakireva1,
Martin Klein1, Shawn M. Jones1, Harihar Shankar1
{@hvdsomp, @phonedude_mln, N/A, @mart1nkle1n,
@shawnmjones, @hariharshankar}
1Research Library
Los Alamos National Laboratory
2Computer Science Department
Old Dominion University
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
2
• Most web archives augment their Mementos with
• Custom banners
• Rewritten links
Status Quo
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
3
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
4
 Such Mementos do not represent the resource’s state at
the time of capture.
 “Rawness” is needed for
 Research evaluating original content
 Replay systems e.g., Memento Reconstruct
 Approaches to guarantee veracity of archived content
Problem
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
5
• Clients have to be aware of archive-specific implementation
• URI patterns used to convey levels of rawness:
• http://somearchive.org/{datetime}im_/URI-R
• http://somearchive.org/{datetime}id_/URI-R
• Supported by OpenWayback and pywb instances
Current Workaround
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
6
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
7
Option #1
Request header sent against TimeGate
Proposal: Use of Prefer Header in HTTP Request
Uniform Access to Raw Mementos
@mart1nkle1n
IIPC WAC, 06/16/2017, London, UK
8
Option #2
Request header sent against Memento
Proposal: Use of Prefer Header in HTTP Request
1 of 8

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Uniform Access to Raw Mementos

  • 1. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK Uniform Access to Raw Mementos Herbert Van de Sompel1, Michael L. Nelson2, Lyudmila Balakireva1, Martin Klein1, Shawn M. Jones1, Harihar Shankar1 {@hvdsomp, @phonedude_mln, N/A, @mart1nkle1n, @shawnmjones, @hariharshankar} 1Research Library Los Alamos National Laboratory 2Computer Science Department Old Dominion University
  • 2. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 2 • Most web archives augment their Mementos with • Custom banners • Rewritten links Status Quo
  • 3. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 3
  • 4. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 4  Such Mementos do not represent the resource’s state at the time of capture.  “Rawness” is needed for  Research evaluating original content  Replay systems e.g., Memento Reconstruct  Approaches to guarantee veracity of archived content Problem
  • 5. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 5 • Clients have to be aware of archive-specific implementation • URI patterns used to convey levels of rawness: • http://somearchive.org/{datetime}im_/URI-R • http://somearchive.org/{datetime}id_/URI-R • Supported by OpenWayback and pywb instances Current Workaround
  • 6. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 6
  • 7. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 7 Option #1 Request header sent against TimeGate Proposal: Use of Prefer Header in HTTP Request
  • 8. Uniform Access to Raw Mementos @mart1nkle1n IIPC WAC, 06/16/2017, London, UK 8 Option #2 Request header sent against Memento Proposal: Use of Prefer Header in HTTP Request