ACTR forays into the semantic web

1
ACT-R forays into the semantic web

• Lael Schooler

2
Annette ten Teije
Martijn Brakenhoff
Jose Queseda
Frank van Harmelen
Hansjoerg Neth
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(No Transcript)
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RDF (Resource Description Framework)
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Linked Data Semantic Repository
(www.ontotext.com/ldsr
)
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Deliverable
www.larkc.eu
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Usecase

• Urban planning
• SNP (gene) for predicting disease
• WHO cancer Monograph production

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A LarKC Pipeline
Decider
Transformer
Identifier
Selecter
Reasoner
RDF Repository
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Challenge and Opportunity for ACT-R

• Bring ACT-R Concepts to Semantic Web
• Bring the messy world into ACT-R models
• Can activation scale to millions or billions of
  chunks?
• Entice ACT-R community to consider Semantic Web
• Early days

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Mapping the Semantic Web and ACT-R
Martijn Brakenhoff

• Similar Representations
• RDF ACT-R Chunks
• Similar control problems
• LarKC Plug-in ACT-R module

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Linked Data Semantic Repository
(www.ontotext.com/ldsr
)
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RDF in XML (Extensible Markup Language)

• ltrdfRDFgt
• ltfoafPerson rdfabout"MG"gt
• ltfoafnamegtMonica Gellarlt/foafnamegt
• ltfoafmbox rdfresource"mailtomonica_at_fri
  ends.com" /gt
• ltfoafhomepage rdfresource"http//www.fr
  iends.com/monica" /gt
• ltfoafworkplaceHomepage rdfresource"http//www.
  restaurant.com/chef/" /gt
• ltfoafknows rdfnodeID"RG" /gt
• ltfoafknows rdfnodeID"CB" /gt
• lt/foafPersongt
• ltfoafPerson rdfabout"RG"gt
• ltfoafnamegtRachel Greenlt/foafnamegt
• ltfoafmbox rdfresource"mailtorachel_at_fri
  ends.com" /gt
• ltfoafhomepage rdfresource"http//www.fr
  iends.com/rachel" /gt
• ltfoafworkplaceHomepage rdfresource"http//www.
  central-perk.com/waitress/" /gt
• ltfoafknows rdfnodeID"MG" /gt
• lt/foafPersongt

ltfoafPerson rdfabout"RG"gt
ltfoafnamegtRachel Greenlt/foafnamegt
ltfoafmbox rdfresource"mailtorachel_at_friends.com
" /gt ltfoafhomepage rdfresource"http//w
ww.friends.com/rachel" /gt ltfoafworkplaceHomepage
rdfresource"http//www.central-perk.com/waitres
s/" /gt ltfoafknows rdfnodeID"MG" /gt
lt/foafPersongt
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XML ? RDF Triples
ltfoafPerson rdfabout"RG"gt
ltfoafnamegtRachel Greenlt/foafnamegt
ltfoafmbox rdfresource"mailtorachel_at_friends.com
" /gt ltfoafhomepage rdfresource"http//w
ww.friends.com/rachel" /gt ltfoafworkplaceHomepage
rdfresource"http//www.central-perk.com/waitres
s/" /gt ltfoafknows rdfnodeID"MG" /gt
lt/foafPersongt
subject predicate object _node14accvpnbx5
rdftype foafPerson _node14accvpnbx5 foafna
me "Rachel Green" _node14accvpnbx5 foafmbox ltm
ailtorachel_at_friends.comgt _node14accvpnbx5 foafh
omepage lthttp//www.friends.com/rachelgt _node14a
ccvpnbx5 foafworkplaceHomepage lthttp//www.
central-perk.com/waitress/gt _node14accvpnbx5 foaf
knows _node14accvpnbx4
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RDF Triples

• subject predicate object
• _node14accvpnbx4 rdftype foafPerson
• _node14accvpnbx4 foafname "Monica Gellar"
• _node14accvpnbx4 foafmbox ltmailtomonica_at_frie
  nds.comgt
• _node14accvpnbx4 foafhomepage lthttp//www.frie
  nds.com/monicagt
• _node14accvpnbx4 foafworkplaceHomepage ltht
  tp//www.restaurant.com/chef/gt
• _node14accvpnbx4 foafknows _node14accvpnbx5
• _node14accvpnbx4 foafknows _node14accvpnbx6
• _node14accvpnbx5 rdftype foafPerson
• _node14accvpnbx5 foafname "Rachel Green"
• _node14accvpnbx5 foafmbox ltmailtorachel_at_frie
  nds.comgt
• _node14accvpnbx5 foafhomepage lthttp//www.frie
  nds.com/rachelgt
• _node14accvpnbx5 foafworkplaceHomepage ltht
  tp//www.central-perk.com/waitress/gt
• _node14accvpnbx5 foafknows _node14accvpnbx4
• _node14accvpnbx6 rdftype foafPerson
• _node14accvpnbx6 foafname "Chandler Bing"

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RDF Graph
...
...
node14accvpnbx5
Rachel Green
foafname
foafknows
...
foafknows
...
node14accvpnbx6
Chandler Bing
foafname
...
...
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ACT-R Chunks

• (_node14accvpnbx4
• ISA foafPerson
• foafname Monica_Gellar
• foafmbox mailtomonica_at_friends.com
• foafhomepage http//www.friends.com/monica
• foafworkplaceHomepage http//www.restaurant.com/
  chef/)
• (_node14accvpnbx5
• ISA foafPerson
• foafname Rachel_Green
• foafmbox mailtorachel_at_friends.com
• foafhomepage http//www.friends.com/rachel
• foafworkplaceHomepage http//www.central-perk.co
  m/waitress/)
• (_node14accvpnbx6
• ISA foafPerson
• foafname Chandler_Bing
• foafmbox mailtochandler_at_s60.com
• foafhomepage http//www.friends.com/chandler
• foafworkplaceHomepage http//www.corporation.com
  /statistical-analist/)

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Chunks are Subgraphs
(_node14accvpnbx4 ISA foafPerson foafname
Monica_Gellar foafmbox mailtomonica_at_friends.co
m foafhomepage http//www.friends.com/monica
foafworkplaceHomepage http//www.restaurant.com
/chef/)
What unit of knowledge should take
activation? Triple? Chunk?
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ACT-R Retrieval Requests in SPARQL (SPARQL
Protocol and RDF Query Language)

• (p find-person
• goalgt
• ISA find
• person person
• gt
• SPARQLgt
• ISA foafPerson
• name person)

SELECT WHERE ?x rdftype foafPerson
?x foafname ?name ?x foafname
Monica_Gellar ?x foafmbox ?mail ?x
foafhomepage ?page ?x foafworkplaceHomepage
?workpage
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SPARQL Module(was/is working)
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ACT-R to Orchestrate Pipelines(in progress)
Goal Module
Imaginal Module
Procedural Module
Reasoner Module
Declarative Module
Reasoner
Progress Module
Pipeline Module
Decider
getProgressReports
Transformer
Identifier
Selecter
Reasoner
postProgressReports
RDF Repository
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Foraging Stopping Rules
Progress Module
Hansjoerg Neth
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Can activation scale to large numbers of chunks?
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SELECTION by Centrality
Jose Queseda
15 of IMDb 80 of interest
Cumulative Proportion of Votes
Number of movies selected
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Challenge and Opportunity for ACT-R

• Similar Representations
• RDF ACT-R Chunks
• Similar control problems
• LarKC Plug-in ACT-R module
• Bring ACT-R Concepts to Semantic Web
• Bring the messy world into ACT-R models
• Can activation scale to millions or billions of
  chunks?
• Entice ACT-R community to consider Semantic Web
• Early days

25
ACT-R forays into the semantic web

• Lael Schooler

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ACT-R Workshop Schedule Opening ACT-R from
CMUs Perspective 900 - 945 Overview of
ACT-R -- John R. Anderson 945 1030 Details
of ACT-R 6.0 -- Dan Bothell Break 1030
1100 Presentations 1 Architecture 1100 1130
Functional constraints on architectural
mechanisms -- Christian Lebiere 1130 1200
Retrieval by Accumulating Evidence in ACT-R --
Leendert van Maanen 1200 1230 A mechanism
for decisions in the absence of prior reward --
Vladislav D. Veksler Lunch 1230
130 Presentations 2 Extensions 130 200
ACT-R forays into the semantic web -- Lael J.
Schooler 200 230 Making Models Tired A
Module for Fatigue -- Glenn F. Gunzelmann 230
300 Acting outside the box Truly embodied
ACT-R -- Anthony Harrison 300 - 330
Interfacing ACT-R with different types of
environments and with different techniques
Issues and Suggestions.-- Michael J.
Schoelles Break 330 400 Panel 400 530
Future of ACT-R from a non-CMU Perspective
Danilo Fum, Kevin A. Gluck, Wayne D. Gray, Niels
A. Taatgen, J. Gregory Trafton, Richard M. Young