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You Cannot ReSIST. Hugh Glaser Electronics & Computer Science University of Southampton DSSE, 28th February 2007. With. Ian Millard Afraz Jaffri Benedicto Rodriguez ReSIST Partners esp. Brian Randell. ReSIST. EU Network of Excellence (www.resist-noe.org) Resilient Systems

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You Cannot ReSIST

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You cannot resist

You Cannot ReSIST

Hugh Glaser

Electronics & Computer Science

University of Southampton

DSSE, 28th February 2007


You cannot resist

With

  • Ian Millard

  • Afraz Jaffri

  • Benedicto Rodriguez

  • ReSIST Partners

    • esp. Brian Randell


Resist

ReSIST

  • EU Network of Excellence

    • (www.resist-noe.org)

    • Resilient Systems

    • 15 partners across Europe

  • Resilience Knowledge Base

  • Resilience-Explicit Computing

  • Dissemination


Semantic web challenge winner 2003

Semantic Web ChallengeWinner 2003

  • CS AKTive Space

    • Gather data

    • UK People, projects, publications

      • Research funding

      • Top Universities

    • Geographical presentation

  • AKT Project (www.aktors.org)


The challenges

The Challenges

  • Organisational Intelligence

    • Who is doing what where?

    • What impact are they having?

  • Integrating resources –

    • Research Councils, HEFCE, HESA, RAE, EU, Institutional DBs and web sites, ePrints, citation services…

  • Information is heterogeneous and distributed

    • Not under own control

    • Not in a common format…

  • Presenting to users


You cannot resist

http://triplestore.aktors.org/demo/AKTiveSpace/


Conceptual architecture

Conceptual Architecture

AKT

Reference

3store

datasources

gatherers and mediators

ontology

knowledge repository(triplestore)

applications


So what is rdf

So what is RDF...?

  • Resource Description Framework

  • W3C recommendation, comes predominantly from Semantic Web research efforts

  • A modelling language designed to represent facts about resources in the World Wide Web

  • Can be used to model any abstract domain, things do not have to be accessible on the web to be described in it


Rdf basic components

RDF: Basic components

  • RDF graphs are formed by triples

subject

predicate

object


Open sparql

Open - SPARQL

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

PREFIX owl: <http://www.w3.org/2002/07/owl#>

PREFIX akt: <http://www.aktors.org/ontology/portal#>

PREFIX akts: <http://www.aktors.org/ontology/support#>

PREFIX wiki: <http://resist.ecs.soton.ac.uk/wiki/>

PREFIX course: http://www.resist-noe.org/ontology/courseware#

SELECT * WHERE {

?paper akt:has-title ?title .

?paper akt:has-author ?person .

?paper <http://www.aktors.org/ontology/extension#has-abstract> ?abstract

}

LIMIT 10


At the centre

At the Centre


Important components 3store and crs

Important Components3store and CRS

  • Open source semantic store

  • Scalable

    • ReSIST - 50 million facts

    • Garlik - 1,000,000,000s

      • Uses lack of predefined schema

      • Cluster

  • Distributed queries next

    • Across external stores


Triplestore evaluation

Triplestore Evaluation


You cannot resist

  • Consistent Reference Service (CRS)

    • Where is the Semantic Web here?

      • Technologies used

      • Who is “Jongho Nang”?

      • Which paper is “MPEG 비디오스트림에대한 MC-DCT 영역에서의자막처리방법”?


You cannot resist

  • Problems

    • Finding co-referents

      • NLP, Statistical, Structural

    • Making the knowledge available

      • Exposing a DB?

      • (Semantic) Web services

      • Home page (FOAF file)?

  • Identify co-referents

    • Against different policies - fit for purpose

      • Are false positives acceptable?

  • Distributed and federated (compare OAI-PMH)

  • Not a Naming Authority


You cannot resist

  • Query by URI:

    • http://dblp.uni-trier.de/People#35ff57fb

  • Response from CRS:

    <ns1:Bundle rdf:about=

    "http://www.aktors.org/ontology/coref#bundle-a458455fb66f997bf4a67488dbbdbdae">

    <ns1:duplicate rdf:resource="http://citeseer.ecs.soton.ac.uk/#P147667"/>

    <ns1:duplicate rdf:resource="http://dblp.uni-trier.de/People#35ff57fb"/>

    <ns1:insertedOn>20061126</ns1:insertedOn>

    <ns1:hasCanon rdf:resource="http://citeseer.ecs.soton.ac.uk/#P147667"/>

    </ns1:Bundle>

  • Need to compute fixed point across CRSes

  • But “canon” can be used

  • Maintained according to need

    • Automatic

    • By Hand


Real semantic web

Real Semantic Web

  • The RKB Explorer

    • Accessing live RDF

      • Current ECS?

    • Query over multiple SPARQL endpoints

      • Triplestore per major resource

      • External triplestores

        • Universities

        • Funding agencies (CORDIS, NSF, etc)

  • CRS

    • Different sources because of different curation

    • Different types: convenience, good engineering

    • Different policies: application needs, trust

  • At last the Ontology is of some use.


Future for resist

Future for ReSIST

  • Extend the use of Semantics

  • Resilient-Explicit Computing

    • Model expert knowledge

    • Model processes

    • Model components

  • Support Engineer/Scientist

    • Move effectively between

      • System design

      • Knowledge Base

      • People

    • To choose cost, characteristics, etc

  • Support Run-Time Deployment

    • Dynamic Reconfiguration


You cannot resist

Virtual Learning Environment

Reprints

Peer-Reviewed Journal & Conference Papers

Technical Reports

LocalWeb

Preprints & Metadata

Institutional Archive

Publisher Holdings

Certified Experimental Results & Analyses

Data, Metadata & Ontologies

In the Wild

Undergraduate Students

Digital Library

Graduate Students

E-Scientists

E-Scientists

E-Scientists

Grid

Entire E-Science CycleEncompassing experimentation, analysis, publication, research, learning

E-Experimentation


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