ExFaKT Ex Facts over Knowledge Graphs & Textgadelrab/downloads/WSDM2019/presentation.pdfMohamed H....
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Mohamed H. Gad-Elrab MPI Informatics Daria Stepanova Bosch AI Jacopo Urbani VU Amsterdam Gerhard Weikum MPI Informatics ExFaKT Explaining Facts over Knowledge Graphs & Text WSDM 2019 11-15 February, Melbourne, Australia
Transcript of ExFaKT Ex Facts over Knowledge Graphs & Textgadelrab/downloads/WSDM2019/presentation.pdfMohamed H....
Mohamed H. Gad-ElrabMPI Informatics
Daria StepanovaBosch AI
Jacopo UrbaniVU Amsterdam
Gerhard WeikumMPI Informatics
ExFaKT Explaining Facts over Knowledge Graphs & Text
WSDM 201911-15 February, Melbourne, Australia
Motivation: Constructing & Curating KGs
22
Crowdsourcing
NELL
Automatic Fact Extraction
Question AnsweringEntity Linking
Reasoning
Motivation: Constructing & Curating KGs
3
Human Reviewers
3
Fact Validation
Automated Fact Checking NELL
Question AnsweringEntity Linking
Reasoning
Crowdsourcing
Automatic Fact Extraction
Easy
Motivation: Fact Validation & Explanation
won?
44
World Cup
DiCaprio
actedIn?
Inception
France
HardEasy
Motivation: Fact Validation & Explanation
5
Marissa Mayer
workedWith?
Larry Page
Stephen Hawking
influencedBy?
Paul Dirac
5
won?
World Cup
DiCaprio
actedIn?
Inception
France
Hard
Motivation: Fact Validation & Explanation
6
Marissa Mayer
workedWith?
Larry Page
Stephen Hawking
influencedBy?
Paul Dirac
6
● Did Mayer work at Google? ● Was she an early employee? ● Was she in management?.... etc
● Who was Hawking doctoral advisor?● Have they worked together?● Has Hawking praised Dirac? ..etc
Hard
Motivation: Fact Validation & Explanation
7
Marissa Mayer
workedWith?
Larry Page
Stephen Hawking
influencedBy?
Paul Dirac
7
● Did Mayer work in Google? ● Was she an early employee? ● Or was she in the management?.... etc
● Who was Hawking doctoral advisor?● Have they worked together?● …..
ExFaKT
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“A framework for generating human-understandable explanations for candidate facts.”
ExFaKT
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ExFaKT
KGs
Textual Web Sources
Query: Hawking influencedBy Dirac ?
influencedBy(X,Y)← hasAcademicAdvisor(X,Y);influencedBy(X,Y)← scientist(X), wrote(X,Z), praises(Z,Y);
Inference Rules
ExFaKT
1010
Explanations
KG:
ExFaKT
KGs
Explanations
Textual Web Sources
Query: Hawking influencedBy Dirac ?
KG: wrote(Hawking, “Dirac: The Man and His Work, 1998”); scientist(Hawking);Text: “Dirac has done more than anyone this century, with the exception of Einstein...”
influencedBy(X,Y)← hasAcademicAdvisor(X,Y);influencedBy(X,Y)← scientist(X), wrote(X,Z), praises(Z,Y);
Inference Rules
Experiments
1111
Text
Rules
Usefulness of the Explanations?
Human-crafted RulesExtracted Rules
and/or
User Study Automatic Fact-checking
KGs
Visit our poster!
ExFaKT
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https://www.mpi-inf.mpg.de/impact/exfakt
