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The Knowledge Reengineering Bottleneck

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Keynote talk at CSHALS 2012 in Boston on the Knowledge Reengineering Bottleneck: knowledge engineering in the linked data age.
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52
The Knowledge Reengineering Bottleneck Rinke Hoekstra [email protected] VU University Amsterdam/University of Amsterdam vrijdag 24 februari 12
Transcript
Page 1: The Knowledge Reengineering Bottleneck

The Knowledge Reengineering Bottleneck

Rinke [email protected]

VU University Amsterdam/University of Amsterdam

vrijdag 24 februari 12

Page 2: The Knowledge Reengineering Bottleneck

Knowledge Engineering“Critical scientific problem [...] successful applied AI requires that knowledge move from the heads of experts into programs”FEIGENBAUM, E. A. (1984), Knowledge Engineering. Annals of the New York Academy of Sciences, 426: 91–107. doi: 10.1111/j.1749-6632.1984.tb16513.x

vrijdag 24 februari 12

Page 3: The Knowledge Reengineering Bottleneck

‣ The lack of adequate and appropriate hardware‣ Lack of cumulation of AI methods and techniques‣ Shortage of trained knowledge engineers‣ The problem of knowledge acquisition‣ The development gap

Problems of Knowledge Engineering

vrijdag 24 februari 12

Page 4: The Knowledge Reengineering Bottleneck

Knowledge Acquisition BottleneckFEIGENBAUM, E. A. (1984), Knowledge Engineering. Annals of the New York Academy of Sciences, 426: 91–107. doi: 10.1111/j.1749-6632.1984.tb16513.x

“The problem of knowledge acquisition is the critical bottleneck problem in artificial intelligence”

vrijdag 24 februari 12

Page 5: The Knowledge Reengineering Bottleneck

The Dark Ages

vrijdag 24 februari 12

Page 6: The Knowledge Reengineering Bottleneck

Knowledge ElicitationRepertory GridsThink Aloud MethodCardsorting...

vrijdag 24 februari 12

Page 7: The Knowledge Reengineering Bottleneck

Knowledge ElicitationRepertory GridsThink Aloud MethodCardsorting...

MYCIN and GUIDONKnowledge Types

vrijdag 24 februari 12

Page 8: The Knowledge Reengineering Bottleneck

Knowledge ElicitationRepertory GridsThink Aloud MethodCardsorting...

CommonKADSEngineering MethodologyProblem Solving MethodsDomain Models

MYCIN and GUIDONKnowledge Types

vrijdag 24 februari 12

Page 9: The Knowledge Reengineering Bottleneck

Knowledge ElicitationRepertory GridsThink Aloud MethodCardsorting...

CommonKADSEngineering MethodologyProblem Solving MethodsDomain Models

Ontolingua“Explicit specification of a shared conceptualization”

Sharing ontologies

MYCIN and GUIDONKnowledge Types

vrijdag 24 februari 12

Page 10: The Knowledge Reengineering Bottleneck

How to build the right ontology?

vrijdag 24 februari 12

Page 11: The Knowledge Reengineering Bottleneck

Specify Guidelines

Identify Purpose and

Scope

Motivating Scenarios

Competency Questions

Ontology Capture

Ontology Coding

Ontology Integration

Evaluation

DocumentationMethodologiesMiddle Out ApproachUschold & Gruninger

METHONTOLOGYKACTUSSENSUS(KA)2

How to build the right ontology?

vrijdag 24 februari 12

Page 12: The Knowledge Reengineering Bottleneck

Specify Guidelines

Identify Purpose and

Scope

Motivating Scenarios

Competency Questions

Ontology Capture

Ontology Coding

Ontology Integration

Evaluation

DocumentationMethodologiesMiddle Out ApproachUschold & Gruninger

METHONTOLOGYKACTUSSENSUS(KA)2

Generic Ontology

Core Ontology

Domain Ontology

Top Ontology

Re

pre

se

nta

tio

n O

nto

log

y Ontology TypesTopGenericApplication

FoundationDomain

Core

How to build the right ontology?

vrijdag 24 februari 12

Page 13: The Knowledge Reengineering Bottleneck

Specify Guidelines

Identify Purpose and

Scope

Motivating Scenarios

Competency Questions

Ontology Capture

Ontology Coding

Ontology Integration

Evaluation

DocumentationMethodologiesMiddle Out ApproachUschold & Gruninger

METHONTOLOGYKACTUSSENSUS(KA)2

Generic Ontology

Core Ontology

Domain Ontology

Top Ontology

Re

pre

se

nta

tio

n O

nto

log

y Ontology TypesTopGenericApplication

FoundationDomain

Core

How to build the right ontology?

PrinciplesOntoClean

Ontology vs. Epistemology

vrijdag 24 februari 12

Page 14: The Knowledge Reengineering Bottleneck

Specify Guidelines

Identify Purpose and

Scope

Motivating Scenarios

Competency Questions

Ontology Capture

Ontology Coding

Ontology Integration

Evaluation

DocumentationMethodologiesMiddle Out ApproachUschold & Gruninger

METHONTOLOGYKACTUSSENSUS(KA)2

Ontology ReuseMerging & AlignmentModularizationOntology Design Patterns

Generic Ontology

Core Ontology

Domain Ontology

Top Ontology

Re

pre

se

nta

tio

n O

nto

log

y Ontology TypesTopGenericApplication

FoundationDomain

Core

How to build the right ontology?

PrinciplesOntoClean

Ontology vs. Epistemology

vrijdag 24 februari 12

Page 15: The Knowledge Reengineering Bottleneck

Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/vrijdag 24 februari 12

Page 16: The Knowledge Reengineering Bottleneck

Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/

As of September 2011

MusicBrainz

(zitgist)

P20

Turismo de

Zaragoza

yovisto

Yahoo! Geo

Planet

YAGO

World Fact-book

El ViajeroTourism

WordNet (W3C)

WordNet (VUA)

VIVO UF

VIVO Indiana

VIVO Cornell

VIAF

URIBurner

Sussex Reading

Lists

Plymouth Reading

Lists

UniRef

UniProt

UMBEL

UK Post-codes

legislationdata.gov.uk

Uberblic

UB Mann-heim

TWC LOGD

Twarql

transportdata.gov.

uk

Traffic Scotland

theses.fr

Thesau-rus W

totl.net

Tele-graphis

TCMGeneDIT

TaxonConcept

Open Library (Talis)

tags2con delicious

t4gminfo

Swedish Open

Cultural Heritage

Surge Radio

Sudoc

STW

RAMEAU SH

statisticsdata.gov.

uk

St. Andrews Resource

Lists

ECS South-ampton EPrints

SSW Thesaur

us

SmartLink

Slideshare2RDF

semanticweb.org

SemanticTweet

Semantic XBRL

SWDog Food

Source Code Ecosystem Linked Data

US SEC (rdfabout)

Sears

Scotland Geo-

graphy

ScotlandPupils &Exams

Scholaro-meter

WordNet (RKB

Explorer)

Wiki

UN/LOCODE

Ulm

ECS (RKB

Explorer)

Roma

RISKS

RESEX

RAE2001

Pisa

OS

OAI

NSF

New-castle

LAASKISTI

JISC

IRIT

IEEE

IBM

Eurécom

ERA

ePrints dotAC

DEPLOY

DBLP (RKB

Explorer)

Crime Reports

UK

Course-ware

CORDIS (RKB

Explorer)CiteSeer

Budapest

ACM

riese

Revyu

researchdata.gov.

ukRen. Energy Genera-

tors

referencedata.gov.

uk

Recht-spraak.

nl

RDFohloh

Last.FM (rdfize)

RDF Book

Mashup

Rådata nå!

PSH

Product Types

Ontology

ProductDB

PBAC

Poké-pédia

patentsdata.go

v.uk

OxPoints

Ord-nance Survey

Openly Local

Open Library

OpenCyc

Open Corpo-rates

OpenCalais

OpenEI

Open Election

Data Project

OpenData

Thesau-rus

Ontos News Portal

OGOLOD

JanusAMP

Ocean Drilling Codices

New York

Times

NVD

ntnusc

NTU Resource

Lists

Norwe-gian

MeSH

NDL subjects

ndlna

myExperi-ment

Italian Museums

medu-cator

MARC Codes List

Man-chester Reading

Lists

Lotico

Weather Stations

London Gazette

LOIUS

Linked Open Colors

lobidResources

lobidOrgani-sations

LEM

LinkedMDB

LinkedLCCN

LinkedGeoData

LinkedCT

LinkedUser

FeedbackLOV

Linked Open

Numbers

LODE

Eurostat (OntologyCentral)

Linked EDGAR

(OntologyCentral)

Linked Crunch-

base

lingvoj

Lichfield Spen-ding

LIBRIS

Lexvo

LCSH

DBLP (L3S)

Linked Sensor Data (Kno.e.sis)

Klapp-stuhl-club

Good-win

Family

National Radio-activity

JP

Jamendo (DBtune)

Italian public

schools

ISTAT Immi-gration

iServe

IdRef Sudoc

NSZL Catalog

Hellenic PD

Hellenic FBD

PiedmontAccomo-dations

GovTrack

GovWILD

GoogleArt

wrapper

gnoss

GESIS

GeoWordNet

GeoSpecies

GeoNames

GeoLinkedData

GEMET

GTAA

STITCH

SIDER

Project Guten-berg

MediCare

Euro-stat

(FUB)

EURES

DrugBank

Disea-some

DBLP (FU

Berlin)

DailyMed

CORDIS(FUB)

Freebase

flickr wrappr

Fishes of Texas

Finnish Munici-palities

ChEMBL

FanHubz

EventMedia

EUTC Produc-

tions

Eurostat

Europeana

EUNIS

EU Insti-

tutions

ESD stan-dards

EARTh

Enipedia

Popula-tion (En-AKTing)

NHS(En-

AKTing) Mortality(En-

AKTing)

Energy (En-

AKTing)

Crime(En-

AKTing)

CO2 Emission

(En-AKTing)

EEA

SISVU

education.data.g

ov.uk

ECS South-ampton

ECCO-TCP

GND

Didactalia

DDC Deutsche Bio-

graphie

datadcs

MusicBrainz

(DBTune)

Magna-tune

John Peel

(DBTune)

Classical (DB

Tune)

AudioScrobbler (DBTune)

Last.FM artists

(DBTune)

DBTropes

Portu-guese

DBpedia

dbpedia lite

Greek DBpedia

DBpedia

data-open-ac-uk

SMCJournals

Pokedex

Airports

NASA (Data Incu-bator)

MusicBrainz(Data

Incubator)

Moseley Folk

Metoffice Weather Forecasts

Discogs (Data

Incubator)

Climbing

data.gov.uk intervals

Data Gov.ie

databnf.fr

Cornetto

reegle

Chronic-ling

America

Chem2Bio2RDF

Calames

businessdata.gov.

uk

Bricklink

Brazilian Poli-

ticians

BNB

UniSTS

UniPathway

UniParc

Taxonomy

UniProt(Bio2RDF)

SGD

Reactome

PubMedPub

Chem

PRO-SITE

ProDom

Pfam

PDB

OMIMMGI

KEGG Reaction

KEGG Pathway

KEGG Glycan

KEGG Enzyme

KEGG Drug

KEGG Com-pound

InterPro

HomoloGene

HGNC

Gene Ontology

GeneID

Affy-metrix

bible ontology

BibBase

FTS

BBC Wildlife Finder

BBC Program

mes BBC Music

Alpine Ski

Austria

LOCAH

Amster-dam

Museum

AGROVOC

AEMET

US Census (rdfabout)

Media

Geographic

Publications

Government

Cross-domain

Life sciences

User-generated content

vrijdag 24 februari 12

Page 17: The Knowledge Reengineering Bottleneck

Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/

As of September 2011

MusicBrainz

(zitgist)

P20

Turismo de

Zaragoza

yovisto

Yahoo! Geo

Planet

YAGO

World Fact-book

El ViajeroTourism

WordNet (W3C)

WordNet (VUA)

VIVO UF

VIVO Indiana

VIVO Cornell

VIAF

URIBurner

Sussex Reading

Lists

Plymouth Reading

Lists

UniRef

UniProt

UMBEL

UK Post-codes

legislationdata.gov.uk

Uberblic

UB Mann-heim

TWC LOGD

Twarql

transportdata.gov.

uk

Traffic Scotland

theses.fr

Thesau-rus W

totl.net

Tele-graphis

TCMGeneDIT

TaxonConcept

Open Library (Talis)

tags2con delicious

t4gminfo

Swedish Open

Cultural Heritage

Surge Radio

Sudoc

STW

RAMEAU SH

statisticsdata.gov.

uk

St. Andrews Resource

Lists

ECS South-ampton EPrints

SSW Thesaur

us

SmartLink

Slideshare2RDF

semanticweb.org

SemanticTweet

Semantic XBRL

SWDog Food

Source Code Ecosystem Linked Data

US SEC (rdfabout)

Sears

Scotland Geo-

graphy

ScotlandPupils &Exams

Scholaro-meter

WordNet (RKB

Explorer)

Wiki

UN/LOCODE

Ulm

ECS (RKB

Explorer)

Roma

RISKS

RESEX

RAE2001

Pisa

OS

OAI

NSF

New-castle

LAASKISTI

JISC

IRIT

IEEE

IBM

Eurécom

ERA

ePrints dotAC

DEPLOY

DBLP (RKB

Explorer)

Crime Reports

UK

Course-ware

CORDIS (RKB

Explorer)CiteSeer

Budapest

ACM

riese

Revyu

researchdata.gov.

ukRen. Energy Genera-

tors

referencedata.gov.

uk

Recht-spraak.

nl

RDFohloh

Last.FM (rdfize)

RDF Book

Mashup

Rådata nå!

PSH

Product Types

Ontology

ProductDB

PBAC

Poké-pédia

patentsdata.go

v.uk

OxPoints

Ord-nance Survey

Openly Local

Open Library

OpenCyc

Open Corpo-rates

OpenCalais

OpenEI

Open Election

Data Project

OpenData

Thesau-rus

Ontos News Portal

OGOLOD

JanusAMP

Ocean Drilling Codices

New York

Times

NVD

ntnusc

NTU Resource

Lists

Norwe-gian

MeSH

NDL subjects

ndlna

myExperi-ment

Italian Museums

medu-cator

MARC Codes List

Man-chester Reading

Lists

Lotico

Weather Stations

London Gazette

LOIUS

Linked Open Colors

lobidResources

lobidOrgani-sations

LEM

LinkedMDB

LinkedLCCN

LinkedGeoData

LinkedCT

LinkedUser

FeedbackLOV

Linked Open

Numbers

LODE

Eurostat (OntologyCentral)

Linked EDGAR

(OntologyCentral)

Linked Crunch-

base

lingvoj

Lichfield Spen-ding

LIBRIS

Lexvo

LCSH

DBLP (L3S)

Linked Sensor Data (Kno.e.sis)

Klapp-stuhl-club

Good-win

Family

National Radio-activity

JP

Jamendo (DBtune)

Italian public

schools

ISTAT Immi-gration

iServe

IdRef Sudoc

NSZL Catalog

Hellenic PD

Hellenic FBD

PiedmontAccomo-dations

GovTrack

GovWILD

GoogleArt

wrapper

gnoss

GESIS

GeoWordNet

GeoSpecies

GeoNames

GeoLinkedData

GEMET

GTAA

STITCH

SIDER

Project Guten-berg

MediCare

Euro-stat

(FUB)

EURES

DrugBank

Disea-some

DBLP (FU

Berlin)

DailyMed

CORDIS(FUB)

Freebase

flickr wrappr

Fishes of Texas

Finnish Munici-palities

ChEMBL

FanHubz

EventMedia

EUTC Produc-

tions

Eurostat

Europeana

EUNIS

EU Insti-

tutions

ESD stan-dards

EARTh

Enipedia

Popula-tion (En-AKTing)

NHS(En-

AKTing) Mortality(En-

AKTing)

Energy (En-

AKTing)

Crime(En-

AKTing)

CO2 Emission

(En-AKTing)

EEA

SISVU

education.data.g

ov.uk

ECS South-ampton

ECCO-TCP

GND

Didactalia

DDC Deutsche Bio-

graphie

datadcs

MusicBrainz

(DBTune)

Magna-tune

John Peel

(DBTune)

Classical (DB

Tune)

AudioScrobbler (DBTune)

Last.FM artists

(DBTune)

DBTropes

Portu-guese

DBpedia

dbpedia lite

Greek DBpedia

DBpedia

data-open-ac-uk

SMCJournals

Pokedex

Airports

NASA (Data Incu-bator)

MusicBrainz(Data

Incubator)

Moseley Folk

Metoffice Weather Forecasts

Discogs (Data

Incubator)

Climbing

data.gov.uk intervals

Data Gov.ie

databnf.fr

Cornetto

reegle

Chronic-ling

America

Chem2Bio2RDF

Calames

businessdata.gov.

uk

Bricklink

Brazilian Poli-

ticians

BNB

UniSTS

UniPathway

UniParc

Taxonomy

UniProt(Bio2RDF)

SGD

Reactome

PubMedPub

Chem

PRO-SITE

ProDom

Pfam

PDB

OMIMMGI

KEGG Reaction

KEGG Pathway

KEGG Glycan

KEGG Enzyme

KEGG Drug

KEGG Com-pound

InterPro

HomoloGene

HGNC

Gene Ontology

GeneID

Affy-metrix

bible ontology

BibBase

FTS

BBC Wildlife Finder

BBC Program

mes BBC Music

Alpine Ski

Austria

LOCAH

Amster-dam

Museum

AGROVOC

AEMET

US Census (rdfabout)

Media

Geographic

Publications

Government

Cross-domain

Life sciences

User-generated content

0

100

200

300

400

1 m

ei 2

007

8 ok

t. 20

07

7 no

v. 20

07

10 n

ov. 2

007

28 fe

b. 2

008

31 m

rt. 2

008

18 s

ep. 2

008

5 m

rt. 2

009

27 m

rt. 2

009

14 ju

l. 20

09

22 s

ep. 2

010

19 s

ep. 2

011

23 fe

b. 2

012

vrijdag 24 februari 12

Page 18: The Knowledge Reengineering Bottleneck

Performance

0

70

140

210

280

350

420

490

560

630

700

0 10 20 30 40 50 60 70 80 90 100

Thro

ug

hp

ut

(Ktr

iple

s/s

ec)

Input size (Billions of statements)

BigOWLIMOracle 11gDAML DBBigDataWebPIE

We are here!!

Monday 10 May 2010

Urbani J., Kotoulas, S., Maaseen J., van Harmelen, F. & Bal, H. (2010), OWL reasoning with WebPIE: calculating the closure of 100 billion triples, In Proceedings of ESWC 2010

2009: WebPIE

vrijdag 24 februari 12

Page 19: The Knowledge Reengineering Bottleneck

Performance

0

70

140

210

280

350

420

490

560

630

700

0 10 20 30 40 50 60 70 80 90 100

Thro

ug

hp

ut

(Ktr

iple

s/s

ec)

Input size (Billions of statements)

BigOWLIMOracle 11gDAML DBBigDataWebPIE

We are here!!

Monday 10 May 2010

Urbani J., Kotoulas, S., Maaseen J., van Harmelen, F. & Bal, H. (2010), OWL reasoning with WebPIE: calculating the closure of 100 billion triples, In Proceedings of ESWC 2010

2011: QueryPIE Backward-chaining inference at query-time, over 1B triples,

in milliseconds, on just 8 parallel machines.Pre-computation in 8-300sec against 1-3 hours in WebPIE

2009: WebPIE

vrijdag 24 februari 12

Page 20: The Knowledge Reengineering Bottleneck

Dataset Size Terminological Closure Full Closure Ratio

FactForge 862M 89 sec 2h45min 1:111

LinkedLifeData 649M 332 sec 1h5min 1:11

LUBM 1.1B 8 sec 1h15min 1:562

QueryPIE: Backward reasoning for OWL Horst over very large knowledge bases. Urbani, J.; Harmelen, F. van ; Schlobach, S.; and Bal, H. 2011. In Proceedings of ISWC 2011, Volume 5823, 730-745, Springer.

vrijdag 24 februari 12

Page 21: The Knowledge Reengineering Bottleneck

Knowledge Executable Models

KnowledgeTask Independent Domain Knowledge

Knowledge“Semantic” Data

Knowledge SharingReusable System

Components

Knowledge SharingOntology Reuse

Knowledge SharingData Interoperability

1980 - 1995 1995 - 2005 2005 - now

vrijdag 24 februari 12

Page 22: The Knowledge Reengineering Bottleneck

Knowledge Reengineering BottleneckThe difficulty of the correct and continuous use of

preexisting knowledge for a new task

vrijdag 24 februari 12

Page 23: The Knowledge Reengineering Bottleneck

Challenge 1Data Dependency

vrijdag 24 februari 12

Page 24: The Knowledge Reengineering Bottleneck

Ontology Alignment Evaluation Initiative

vrijdag 24 februari 12

Page 25: The Knowledge Reengineering Bottleneck

Design Patterns

vrijdag 24 februari 12

Page 26: The Knowledge Reengineering Bottleneck

“Data” Driven Knowledge Engineering

18/02/2012 Semantic Web cube

1/2www.w3.org/Icons/SW/sw-cube-v.svg

vrijdag 24 februari 12

Page 27: The Knowledge Reengineering Bottleneck

“Data” Driven Knowledge Engineering

18/02/2012 Semantic Web cube

1/2www.w3.org/Icons/SW/sw-cube-v.svg

vrijdag 24 februari 12

Page 28: The Knowledge Reengineering Bottleneck

Challenge 2Complexity

vrijdag 24 februari 12

Page 29: The Knowledge Reengineering Bottleneck

Neats Scruffies

VS

vrijdag 24 februari 12

Page 30: The Knowledge Reengineering Bottleneck

Use

Reuse

Slide by Frank van Harmelen, ISWC 2011 Keynote, http://www.cs.vu.nl/~frankh/spool/ISWC2011Keynote/

Use = 1 - Reuse

vrijdag 24 februari 12

Page 31: The Knowledge Reengineering Bottleneck

Challenge 3Limited Control

vrijdag 24 februari 12

Page 32: The Knowledge Reengineering Bottleneck

Data is Dirty

vrijdag 24 februari 12

Page 33: The Knowledge Reengineering Bottleneck

Data is DirtyVerbose

vrijdag 24 februari 12

Page 34: The Knowledge Reengineering Bottleneck

Data is DirtyVerboseInconsistent

vrijdag 24 februari 12

Page 35: The Knowledge Reengineering Bottleneck

Data is DirtyVerboseInconsistentRedundant

vrijdag 24 februari 12

Page 36: The Knowledge Reengineering Bottleneck

Data is DirtyVerboseInconsistentRedundantDisconnected

vrijdag 24 februari 12

Page 37: The Knowledge Reengineering Bottleneck

Data is DirtyVerboseInconsistentRedundantDisconnectedStale

vrijdag 24 februari 12

Page 38: The Knowledge Reengineering Bottleneck

vrijdag 24 februari 12

Page 39: The Knowledge Reengineering Bottleneck

Semantically-Interlinked Online Communities

vrijdag 24 februari 12

Page 40: The Knowledge Reengineering Bottleneck

Semantically-Interlinked Online Communities

vrijdag 24 februari 12

Page 41: The Knowledge Reengineering Bottleneck

Pedantic Webhttp://pedantic-web.org

vrijdag 24 februari 12

Page 42: The Knowledge Reengineering Bottleneck

LODStatshttp://stats.lod2.eu

vrijdag 24 februari 12

Page 43: The Knowledge Reengineering Bottleneck

40.745.554.078 Triples!

vrijdag 24 februari 12

Page 44: The Knowledge Reengineering Bottleneck

40.745.554.078 Triples!(1.6 Billion)

vrijdag 24 februari 12

Page 45: The Knowledge Reengineering Bottleneck

Open PHACTS

Data2Semantics

LOD Around the Clock

vrijdag 24 februari 12

Page 46: The Knowledge Reengineering Bottleneck

Challenge 4Increasing Importance

vrijdag 24 februari 12

Page 47: The Knowledge Reengineering Bottleneck

Semantic Web Good News Quizhttp://slideshare.net/Frank.van.Harmelen/semantic-web-good-news

vrijdag 24 februari 12

Page 48: The Knowledge Reengineering Bottleneck

Semantic Web Good News Quizhttp://slideshare.net/Frank.van.Harmelen/semantic-web-good-news

vrijdag 24 februari 12

Page 49: The Knowledge Reengineering Bottleneck

‣ New stakeholders

‣ No more fooling around

‣ Scary stuff...?

vrijdag 24 februari 12

Page 50: The Knowledge Reengineering Bottleneck

‣ Bridging the development gap

‣ Data publishing licenses

‣ Access policies

‣ Attribution

‣ “Data Hoarding”

vrijdag 24 februari 12

Page 51: The Knowledge Reengineering Bottleneck

‣ The lack of adequate and appropriate hardware‣ Lack of cumulation of AI methods and techniques‣ Shortage of trained knowledge engineers‣ The problem of knowledge acquisition‣ The development gap

The KnowledgeReengineering Bottleneck

VV

??

?

vrijdag 24 februari 12

Page 52: The Knowledge Reengineering Bottleneck

http://www.webont.org/owled/2012@OWLED2012Worksh

vrijdag 24 februari 12


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