semantic web towards

religiondressInternet and Web Development

Oct 21, 2013 (4 years and 22 days ago)

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Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

From Internet and the
semantic web towards
community health care and
cancer research

Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Table of content


Internet (2)


WWW


Decision support


Workflow orchestration


Community healthcare


Cancer research


Internet

WWW

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Internet


Started by the US Department of Defense
(DarpaNet) in 1974


Built on top of this technology, Tim Berners
-
Lee and Robert Cailleau, working at CERN,
invented the WWW as an in house network for
a telephone repository.


Is currently a huge network of computers
sharing billions of documents.


Internet

WWW

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Internet 2


Today’s internet


Millions of users


Web, email, low
-
quality audio & video


Interconnect personal computers and servers


Applications adapt to underlying technology


Tomorrow’s internet 2


Billions of users and devices


Convergence of today’s applications with multimedia
(telephony, video
-
conference, HDTV)


Interconnect personal computers, servers, and embedded
computers


New technologies enable unanticipated applications (and create
new challenges)




Internet

WWW

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Internet 2


Internet 2 means


More


Better


Faster


Internet 2 will be an enabler of new
technologies


It will boost the usage of the WWW



Internet

WWW

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Internet

WWW

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Universal Access



Interoperability



Decentralization



Semantic Web



Trust

Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Universal Access


The WWW is the
universe of network
-
accessible information

(available
through your computer, phone, television, or networked refrigerator...).


This enables new forms of human communication and opportunities to share
knowledge.


One of W3C's primary goals is to make these benefits available to all people,
whatever their hardware, software, network infrastructure, native language,
culture, geographical location, or physical or mental ability


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research


Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Interoperability
:


Twenty years ago, people bought software that only worked with other
software from the same vendor. Today, people have more freedom to choose,
and they rightly expect software components to be interchangeable.



They also expect to be able to view Web content with their preferred software
(graphical desktop browser, speech synthesizer, braille display, car phone...).



W3C, a vendor
-
neutral organization, promotes interoperability by designing
and promoting open (non
-
proprietary) computer languages and protocols that
avoid the market fragmentation of the past.


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research



Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Decentralization:



Decentralization is a principle of modern distributed systems, including
societies.



In a centralized system, every message or action has to pass through a central
authority, causing bottlenecks when the traffic increases. In design, we
therefore limit the number of central Web facilities to reduce the vulnerability
of the Web as a whole.



It works like a holographic system: you cut out part of the system, but the
system keeps working, because other parts can take over.


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Semantic Web:


People currently share their knowledge on the Web in languages intended for
other people.


This is okay for humans but difficult for machines! They cannot really help us;
they only play the role of a messenger between two humans.


This is about the ‘meaning’ of the data.


For machines a typical web page looks like
this:



Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Semantic Web:


This is not about humans understanding computers, but computers
understanding humans.


On the
Semantic Web

we will be able to express ourselves in terms that our
computers can interpret and exchange.


By doing so, we will enable them to solve problems that we find tedious, too
slow or even impossible to do.


It will enable computers to behave in an intelligent way




Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Semantic Web:


Each Item on the web is called a resource


In the semantic web a resource should have information about itself, called
“metadata”


The “semantic web” is a metadata based infrastructure allowing machines to
do reasoning on data


Using URI’s you can uniquely and universally identify resources on the web


Uniqueness is vital to make consistent statements


Anybody can create metadata on any resource on the web


democratic principle


problem of trust


It becomes easy to merge metadata


Applications can merge information coming from different sources




Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Semantic Web: ontologies


Ontologies are a description of a domain using concepts and relations between
concepts.


This is where ‘information’ becomes ‘knowledge’.


‘Intelligence’ comes from latin: ‘inter’ + ‘legere’ meaning ‘making connections
between’


Ontologies can be merged and interconnected, forming a gigantic source of medical
knowledge.


We need the standards of the Semantic web to build ontologies


RDF, OWL, resources (URI’s)






Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Trust:


Trust for people: to promote a more collaborative environment, we must build
a
"Web of Trust"

that offers confidentiality, instills confidence, and makes it
possible for people to take responsibility for (or be accountable for) what they
publish on the Web.



Trust for machines: software, doing ‘intelligent’ processing of data (e.g.
decision support in medicine) must be able to prove it is thrustworthy.


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

WWW


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research



Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Decision support


Given the ontologies, the rules, the proofs and the trust we have all means in hand
to help people decide.



Using clinical data from patients, knowledge from ontologies and rules (guidelines,
best practices, …), systems can propose diagnoses and generate treatment plans
(clinical pathways).



Clinical data from patients can come from different sources: different EPR
databases, measurements from devices, …



Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Decision support


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Workflow orchestration


Not only can systems help us decide, they can also help us organize the work by
forwarding a generated treatment or care plan to a workflow engine to orchestrate
all steps in the plan.



During execution of the steps, either by humans, either by machines, new data is
generated.



Using the semantic technology the new data and changed evidence or guidelines are
input for a next cycle, enabling an adaptable process, tailored to the individual
needs of the patient and the changing environment



Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Workflow orchestration


Internet

WWW


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Community health care


Scaling from one enterprise to the community is
intrinsically possible because of the semantic web
technology:


You can merge different data sources and ontologies


Web Services are a technique for interchanging functionality
and data between different organizations.


There is a semantic preservation.


Scaling out workflow can improve quality and cost of
healthcare


Using of shared resources (machines, equipment)


More efficient


Internet


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004

Cancer research


How van cancer research profit from this ?


Community health care provides the research organizations with huge data
sources


Data from different sources can be correlated in a way that was not possible
before


New facts, not apparent at first sight can be inferred


Semantic technology can help select patients based on inclusion and exclusion
criteria (faster enrollment, fewer drop outs)


Monitoring systems can collect data, interpreted by intelligent processes to
raise adverse event notifications


Semantic technology can bring us more accurate measurements and
conclusions (e.g. interpretation of images)


Research can give us new evidence which can be incorporated into the
ontologies and rules.


Like clinical pathways can optimize the clinical work, scientific pathways can
optimize research, reducing costs and enhacing the quality.


Internet


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Oct. 5 2004 Dr. Dirk Colaert


Agfa Health Care

I
N
C
TR


2004


Internet


Universal access


Interoperability


Decentralization


Semantic Web


Trust

Decision support

Workflow


orchestration

Community healthcare

Cancer research




Cancer research


Internet is used by WWW


With the WWW you can build a stack from non
machine readable documents over machine readable
documents (using RDF), ontologies (using OWL),
rules, proofs and trust.


Scaled out this enables community healthcare


Community healthcare enables efficient research with a
mutual fertilizing relation.


internet


www


RDF


doc’s


OWL


ontologies


proof


trust


community


research