data salon 3 - ghent
DESCRIPTION
TRANSCRIPT
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COMPLEXITY
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NOT
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COMPUTATIONAL
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OR
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MATHEMATICAL
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DTIME
EXPTIME
NTIME
NEXPTIME
NP
NC
P
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NO
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SIMPLER PROBLEMS
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WHERE THE BRAIN SAYS
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W T F
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A1,A2,A3,A4
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A1Enkel publicaties die in de Science Citation Index, de Social Science Citation Index en de Arts & Humanities Citation Index in Web of Science het documenttype article, letter, note, review of proceedings paper krijgen, kunnen erkend worden als A1 (z.o. definitie van A1 publicatie in vorige vraag).
Andere documenttypes, zoals book review, biographical item, editorial material, ..., krijgen geen A1 status en worden daarom door de reviewer geklasseerd als V. Indien uw publicatie toch gelijkstaat aan een volwaardig artikel (bijv. in vele gevallen van editorial material), dan kunt u in samenspraak met de uitgever van het tijdschrift waarin uw bijdrage verscheen, een vraag indienen bij Thomson Reuter om het documenttype om te zetten naar article of review.
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ONLY 6 CLICKS TO FULL TEXT
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WTF
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STANDARDS
TOOLBOX
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Z39.50
Z39.88
UTF-8
XML-SCHEMA
EAD
XSLT Handl
e
SSSOAPRDF/XML
ISAAD
GRRRRRDLCQL
MARC21
METS
FRBRUnicode
DTD
XML
SPARQLOWL
CSS
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LOVE FOR BOOLEANS
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if (!$loginAccount or (($userRole eq 'reviewer') and !$loginAccount->{departmentRights}) or
($userRole eq 'localAdmin' and !$loginAccount->{isLocalAdmin}) or
(($userRole eq 'superAdmin') and !$loginAccount->{isSuperAdminAccount})) {
…
}
WARNING: REAL CODE
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LICENCED /PUBLIC DOMAIN
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DIGITAL PRESERVATIO
N
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WTF
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Law of conservation of trouble?
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Origin in Trade-Off’s?• Interpretable (conceptual distance): humans ->
machines• Processing (time, production): slow -> fast• Extensible: namespaces -> bigger model• Community: my group -> your group• Cost of production: $$ -> $$$$• Security• Application Domain: generic (e.g. HTML) -> data
models• Tradition: If it ain’t broke..• Law• Future promises: If I do this then I will …• Compatibility: forwards -> backwards
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OR
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INCOMPLETE INFORMATIO
N?
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TIME/CONTEXT?
At this moment in time we had only access to (…)
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Actors aren’t RATIONAL?
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Feature Creep Fallacies of
Argumentation
Wrong Business Model
Bricolage
Not Invented here
Community Pressure?
Funding
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LESS = MORE
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WORSE = BETTER
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Richard Gabriel - 1989
On SimplicityThe design must be simple, both in implementation and interface.
Better: simpler implementation
than: simpler interface
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Richard Gabriel - 1989
On CorrectnessThe design must be correct in all observable aspects. It is slightly better to be simple than correct.Better: simpler design
than:correct design
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Richard Gabriel - 1989
On ConsistencyConsistency can be sacrificed for simplicity
Better: consistency sacrificed in some cases for simplicity
than: design must be consistent in all aspects
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Richard Gabriel - 1989
On CompletenessCompleteness can be sacrificed in favor of any other quality
Better:simplicity may overrule
completeness
than: simplicity is not allowed to reduce completeness
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SIMPLICITY produces successful softwareSIMPLICITY takes much less time and
effort to produce and adapt
SIMPLICITY spreads much rapidly, long before
any complete, correct, constitent programs sees
the market
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THANKS :-)
PATRICK HOCHSTENBACH – GHENT UNIVERSITY LIBRARYhttp://lib.ugent.be
DATASALON-3 OCT 2009GENT