Het Web als wetenschapsversneller

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Het Web als wetenschapsversneller

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Versneller? 3. Outline. Stuff you all know: The scientists' problem. The general idea: a Web of Data ... What must be done to realise this. How far away is this ... – PowerPoint PPT presentation

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Title: Het Web als wetenschapsversneller

1
Het Web als wetenschapsversneller

Frank van Harmelen
Vrije Universiteit Amsterdam

Data wants to be free
2
Versneller?
3
Outline

Stuff you all know The scientists problem
The general idea a Web of Data
What must be done to realise this
How far away is this
Why is this relevant for you
Nex steps, dos, donts

4
The Scientists Problem

Too much unintegrated data
from a variety of incompatible sources
no standard naming convention
each with a custom browsing and querying
mechanism (no common interface)
and poor interaction with other data sources

Esther Jansma
Henk den Heijer
5
What are the Data Sources?

Flat Files
URLs
Proprietary Databases
Public Databases
Spreadsheets
Emails

Data wants to be free
Ewoud Sanders?
6
In which disciplines?
One dataset per site
a new database each month

Archeology
Chemistry
Genomics, proteomics, ... (bio/life-sciences)
Communication science
Social history
Linguistics
Bio-diversity
Environmental sciences (climate studies)
....
libraries (KB), archives (beeldgeluid)

Willem Bouten
historical data
laymen data
laymen data
international data
7
Outline

The general idea a Web of Data
What must be done to realise this
How far away is this
Why is this relevant for you
Nex steps, dos, donts

8
Impact of the Web

The Web has changed the way
how we read the news
how we shop
how we interact with friends and family
how we search and find information
... how we do science ?
accessing literature, yes, but
doing science?

9
The Web of Data

a.k.a. the "Semantic Web (TBL)
recipeexpose databases on the web, use
standard data-formats, integrate
meta-data from
expressing DB schema semantics in machine
interpretable ways
enable integration and unexpected re-use

10
Een korte geschiedenis van het WWW

Web 1.0 netwerk van plaatjes en tekst
Web 2.0 netwerk van communities
Web 3.0 netwerk van data

door mensen, voor mensen
door groepen mensen, voor groepen mensen
door computers, voor computers, nuttig voor
mensen
11
The Current Web of text and pictures
The Future Web of Data
and another web page about Frank
This page is about the Vrije Uniersitei
a web page in English about Frank
And this page is about LarKC
And this page is about Stefano
Data wants to be free
?
?
?
linked web-pages, written by people, written
for people, used only by people...
?
?
Many of these pages already come from data, that
is usable by computers!
linked data, usable by computers! useful for
people!
But we cant link the data....
12
Outline

The general idea a Web of Data
What must be done to realise this
How far away is this
Why is this relevant for you
Nex steps, dos, donts

13
machine accessible meaning (What its like
to be a machine)
META-DATA
14
What is meta-data?

it's just data
it's data describing other data
its' meant for machine consumption

15
Required are

one or more shared vocabularies
so data producers and data consumers all speak
the same language
a standard syntax
so meta-data can be recognised as such
lots of resources with meta-data attached
mechanisms for attribution and trust

16
1. Shared vocabularies
BioMed

Mesh
Medical Subject Headings, National Library of
Medicine
22.000 descriptions
EMTREE
Commercial Elsevier, Drugs and diseases
45.000 terms, 190.000 synonyms
UMLS
Integrates 100 different vocabularies
SNOMED
200.000 concepts, College of American
Pathologists
Gene Ontology
15.000 terms in molecular biology
NCBI Cancer Ontology
17,000 classes (about 1M definitions)

17
2. A standard syntax
Semantic Web data model RDF
things relations between things
18
RDF Triples in Life Sciences
19
Web of Data anybody can say anything about
anything

All identifiers are URL's ( on the Web)
Allows total decoupling of
data
vocabulary
meta-data

Data wants to be free
ltxgt IsOfType ltTgt
x
T
ltprincegt
20
Outline

The general idea a Web of Data
What must be done to realise this
How far away is this
Why is this relevant for you
Nex steps, dos, donts

21
How far away is this ?

Stable data formats
Lots of shared vocabularies ( ways to convert
them)
Lots of data sources( ways to convert them)
Lots of tools
convert, construct, edit (data, vocabularies)
store, search, query, reason
interlink
visualise
...

22
How far away is this ?

Not very far away!

every book sold by Amazon
rapidly growing Linked Open Data cloud.
already many billions of facts rules
any CD ever recorded (almost)
life-science databases
hierarchical dictionaries (UK, FR, NL)
basic facts on every country on the planet
common sense rules facts (100.000s)
scientific bibliographies
names of artists art works (10.000s)
Geographic names (millions)
Encyclopedia
It gets bigger every month
23
Outline

The general idea a Web of Data
What must be done to realise this
How far away is this
Why is this relevant for you
Nex steps, dos, donts

24
Next steps
Can you get famous by sharing data?

hunt for shared vocabularies
try to avoid building them
wrap legacy data sources
your own
from others
link wrapped sources
publish linked data on the web
make noise
reconstruct some old results
discover new results
get famous

in-use systems in communication science, KB,
Beeld Geluid, Europeana
papers in oncology, in communication science,
dedicated conferences in chemistry,
earth-sciences, life-sciences, humanities
funding opportunities in humanities, social
sciences, life sciences
25
Vb communicatie wetenschappen