ExFaKT Ex plaining F acts over K nowledge Graphs & T ext Mohamed - - PowerPoint PPT Presentation

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Nov 24, 2022 206 likes •345 views

ExFaKT Ex plaining F acts over K nowledge Graphs & T ext Mohamed H. Gad-Elrab Daria Stepanova Jacopo Urbani Gerhard Weikum MPI Informatics Bosch AI VU Amsterdam MPI Informatics WSDM 2019 11-15 February, Melbourne, Australia

SLIDE 1

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

SLIDE 2

Motivation: Constructing & Curating KGs

2 2

Crowdsourcing

NELL

Automatic Fact Extraction

Question Answering Entity Linking Reasoning

SLIDE 3

Motivation: Constructing & Curating KGs

Human Reviewers

Fact Validation

Automated Fact Checking

NELL

Question Answering Entity Linking Reasoning

Crowdsourcing Automatic Fact Extraction

SLIDE 4

Easy

Motivation: Fact Validation & Explanation

won?

4 4

World Cup DiCaprio

actedIn?

Inception France

SLIDE 5

Hard Easy

Motivation: Fact Validation & Explanation

Marissa Mayer

workedWith?

Larry Page Stephen Hawking

influencedBy?

Paul Dirac

won?

World Cup DiCaprio

actedIn?

Inception France

SLIDE 6

Hard

Motivation: Fact Validation & Explanation

Marissa Mayer

workedWith?

Larry Page Stephen Hawking

influencedBy?

Paul Dirac

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

SLIDE 7

Hard

Motivation: Fact Validation & Explanation

Marissa Mayer

workedWith?

Larry Page Stephen Hawking

influencedBy?

Paul Dirac

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?
…..

SLIDE 8

ExFaKT

8 8

“A framework for generating human-understandable explanations for candidate facts.”

SLIDE 9

ExFaKT

9 9

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

SLIDE 10

ExFaKT

10 10

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

SLIDE 11

Experiments

11 11

Text Rules Usefulness of the Explanations?

Human-crafted Rules Extracted Rules and/or User Study Automatic Fact-checking

KGs

SLIDE 12

Visit our poster!

ExFaKT

12 12

https://www.mpi-inf.mpg.de/impact/exfakt