Linked Data as a Library
Data PlatformA Proof of Concept from National Technical Library
of Czech Republic
ELAG 2010 Helsinki
June 10th 2010
Jindřich MynarzNational Technical Library
Overview
Library data
Linked data
Converting library data to linked data
Distribution
Benefits of linked library data
Library data are not very readable
Sourc
e: N
atio
nal L
ibra
ry o
f the C
zech R
epublic
card
cata
logue
Catalog card - record
MARC RecordCAPTCHA - Completely Automated Public Turing test to tell
Cataloguers and Humans Apart
Library data in XML are still
not very readable
Library-specific access protocols
(Z39.50, OAI-PMH)
http
://ww
w.flic
kr.c
om
/photo
s/lw
r/14
400
411
9/
http
://ww
w.flic
kr.c
om
/ph
oto
s/d
ullh
un
k/3
03
50
36
77
Linked data
Linked data principles
Thou shalt:
Use URIs as names for things.
Use HTTP URIs so that people can look up those names.
When someone looks up a URI, provide useful information, using the standards (RDF, SPARQL).
Include links to other URIs. so that they can discover more things.
http
://ww
w.flic
kr.c
om
/photo
s/d
ullh
unk/3
5250
135
47
Data conversion
Choosing datasets
Choosing description
Extraction
Linking
Distribution
Choosing description
Domain ontologies
Established, popular (Dublin Core, SKOS)
Falcons concept search
http
://blis
sfu
llydom
estic
.com
/2010/s
prin
g-c
lean-y
our-b
log-c
om
ments
Extraction - matching dirty data
Library data already contain links
Linking
Links to resources identified
by code values
Links to classification notations
Links to persons
Links to geographical entities
and institutions
„Outsourcing“ authorities
DBPedia
VIAF
Geonames
http
://the
se
cre
tmirro
r.co
m/lin
ke
d-d
ata
/wh
y-y
ou
-should
-support-lin
ked
-da
ta
Crawling data
Distribution
Lightweight API
Single interface to the datasets
Open bibliographic data
http
://ww
w.flic
kr.c
om
/photo
s/v
irtua
lsug
ar/3
16200
555
Open licences
http
://ww
w.p
an
ora
mio
.com
/photo
/20
26840
9
National Technical Library's
library linked data prototype
Incomplete
Parallel coexistence with the original way of data distribution
Benefits of linked library data
Readable
Sharable
Linkable
Distributable
Integrable
?-able
Changes
Questions!
Jindřich Mynarz
www.techlib.cz/en
@jindrichmynarz
http
://ww
w.flic
kr.c
om
/photo
s/th
ere
dpro
ject/3
30
211
015
2