A Parsimonious Approach to Multidimensional Choice Models ...
The Parsimonious Anthropologist · 2018. 12. 11. · The File format Long Tail •Administrative...
Transcript of The Parsimonious Anthropologist · 2018. 12. 11. · The File format Long Tail •Administrative...
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The Parsimonious Anthropologist
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The Influence of string figures and a friar from the 14th Century on the
preservation of digital research data.
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Preservation? (1)
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Preservation? (2)
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Preservation? (3)
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Cats Cradle
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Cats Cradle
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Cats Cradle
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Cats Cradle
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String Figure – Opening A
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Preservation of The Artefact
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Notation – Opening A
P1
rF ml-pu lPS:ex
lF mr-th rFN pu rPS:ex
Where is the Essence of The String Figure?
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What shall we preserve ?
Call The Archivist.
Only the important (valuable?) stuff !
The stuff which we can afford to preserve !
How might we define “Important”?
Depends on the domain
The essence of the String Figure?
How can we understand “Afford” ?
Now we need the 14th Century Friar !
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William of Occam and his “Razor”
pluralitas non est ponenda sine necessitate.
OR
Frustra fit per plura quod potest fieri per pauciora.
Migrated user access!
plurality should not be posited without necessity
OR
It is futile to do with more things that which can be done with fewer
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For Digital Preservation
Only do the minimum needed to achieve the outcome (Preservation)!
only do it when you have evidence you need to !
Not as easy as it sounds
Lots of assumptions
Less evidence!
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The File format Long Tail
• Administrative records (Top 25 = 98%) File Extension Count %
msg 1225790 57.6
doc 437803 20.6
xls 135573 6.4
pdf 82524 3.9
jpeg 58748 2.8
url 20701 1.0
xlsx 16777 0.8
docx 16765 0.8
htm 15616 0.7
txt 14199 0.7
ppt 12834 0.6
gif 11154 0.5
rtf 11046 0.5
tif 9293 0.4
MBX 6044 0.3
png 4812 0.2
obr 4368 0.2
bmp 3286 0.2
zip 2499 0.1
html 2307 0.1
csv 2266 0.1
vsd 2088 0.1
DAT 1972 0.1
xml 1898 0.1
pptx 1700 0.1
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Risk and Response
Impact
Probability
Proximity
Not necessarily part of the institutions risk model!
When will your Preservation Risks be realised?
What is the lifetime of your preservation system?
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Breaking News Crystal balls are unreliable
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Digital Preservation / Archiving
Parsimonious Preservation
Know What you have got
Technical Information (File Format, Where stored)
Cataloguing (Who, Where, When, what Context)
Its not Meta its Data !
Keep the bits safe
Multiple Copies, Multiple Locations
Check Sums
Bit Rot and System Failure modes
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String Figures again.
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Questions?
Tim Gollins
Head of Digital Archiving
National Records of Scotland