1. Digital Media Technology
Week 13: LOD and Visualisation
Peter Verhaar

2. Client-side interface made for you
“The deep web”
Client-side interface made for you
Leiden University. The university to discover.
Leiden University. The university to discover.

3. SQL
PHP
HTML
http
database
HTML
client
server

5. Conversion from data to linear text (Cf. Manovich: databases vs
Conversion from data to linear text (Cf. Manovich: databases vs. narratives)

7. BOOK_ID
TITLE
ISBN13 1
To Kill a Mockingbird 2
The Great Gatsby
subject: “Book-ID” Predicate: “hasISBN13” Object: “ ”
subject: “Book-ID” Predicate: “hasTitle” Object: “To Kill a Mockingbird”

8. The Semantic web
Envisaged by Tim Berners-Lee as “a web of data that can be processed directly and indirectly by machines”
RDF-Triples

10. dbPedia

13. Nano-Publications

14. Semantic Publishing

15. STCN SPARQL Endpoint

16. SPARQL Simple Protocol AND RDF Query Language
“SQL” for Linked Open Data
E.g. SELECT * WHERE { ?book dc:type schema:Book. ?book dc:title ?titel. ?book dc:publisher ?p. ?p skos:prefLabel "Elzevier, Bonaventura". }

17. Visualisation code library
Result of SQL-query
Visualisation code library

18. Visualisation code libraries
Google Charts
D3.js

19. Definitions of visualisation
Distinction between “scientific visualisation” and “information visualisation”
Lev Manovich: “a mapping between discrete data and a visual representation” (p. 2)
Conversion to a graphic modality

20. Source: http://www.infovis- wiki.net/
Graphical modality
Jacques Bertin, Semiology of Graphics
Leland Wilkinson, Grammar of Graphics
Source: wiki.net/