representing, proving and sharing trustworthiness of web resources using veracity
DESCRIPTION
We present a methodology for asserting rTRANSCRIPT
Veracity Ontology
Representing, Proving and Sharing Trustworthiness of Web Resources Using
Veracity
Grégoire Burel, Amparo E. Cano, Matthew Rowe and Alfonso Sosa, OAK Group - University Of Sheffield
EKAW2010, Lisbon, Portugal 12 October 2010
Veracity Ontology
Trustworthiness and WWW
36+ Billion pages
13+ Billion triples
500+ Million Facebook Users
Veracity Ontology
Trustworthiness and WWW
36+ Billion pages
13+ Billion triples
500+ Million Facebook Users
What is true what is false ?(Can I rely on this information ?)
Veracity Ontology
Trustworthiness and WWW
• Questions of Trust:(Policies, provenance and content)– Who said this ? Really ?– Is this person trustworthy ?– Is this information trustworthy ?– Is the information not compromised?– Is it true ? Why ? Still ?– (…)
Veracity Ontology
Trustworthiness and WWW
• Questions of Trust:(Policies, provenance and content)– Who said this ? Really ?– Is this person trustworthy ?– Is this information trustworthy ?– Is the information not compromised?– Is it true ? Why ? Still ?– (…)
Policies and Control Provenance Content
Veracity Ontology
Trustworthiness is not…
Trustworthiness ≠ Provenance
Veracity Ontology
Trustworthiness is not…
Trustworthiness ≠ Provenance
Trustworthiness Provenance
But…
€
⊂
Veracity Ontology
So what is trustworthiness ? (1)
A proposition is trustworthy if the carried information is reliable, commonly accepted as true given pre-existing trusted knowledge and stable over time.
Veracity Ontology
So what is trustworthiness ? (2)
• Many components and factors:(Depending on the context…)– Willingness, confidence, risk and control (Mayer and Davis, 1995)– Content Trust vs. Entity Trust and 19 factors of trust (Gil and Artz,
2007)– Scope, Content Services and People (Golbeck, 2006)– (…)
Social Trust (= Entity Trust) vs. Rational Trust (≈ Content Trust)
Veracity Ontology
So what is trustworthiness ? (2)
• Many components and factors:(Depending on the context…)– Willingness, confidence, risk and control (Mayer and Davis, 1995)– Content Trust vs. Entity Trust and 19 factors of trust (Gil and Artz,
2007)– Scope, Content Services and People (Golbeck, 2006)– (…)
Social Trust (= Entity Trust) vs. Rational Trust (≈ Content Trust)
Veracity Ontology
Veracity, shared Model of Rational Trustworthiness…
A tripartite Trustworthiness model and an Ontology based on Social Trustworthiness and Rational Trustworthiness.
Veracity Ontology
Veracity, shared Model of Rational Trustworthiness…
A tripartite Trustworthiness model and an Ontology based on Social Trustworthiness and Rational Trustworthiness.
Social Trustworthiness:The validity of an information can only be verified by trusting the person that wrote the statement or confirms it.
Veracity Ontology
Veracity, shared Model of Rational Trustworthiness…
A tripartite Trustworthiness model and an Ontology based on Social Trustworthiness and Rational Trustworthiness.
Social Trustworthiness:The validity of an information can only be verified by trusting the person that wrote the statement or confirms it.
Rational Trustworthiness:The validity of an information can be justified using direct or indirect knowledge:- The author can prove that he knows
about the proposition. (Knowledge Justification)
- There is a proposition that tends to confirm or contradict the current proposition. (Knowledge Reference)
Veracity Ontology
Veracity, shared Model of Rational Trustworthiness…
“Alice believe in the contentwritten by Bob because she
knows Bob.”
“Alice believe in the contentwritten by Bob because Bob is knowledgeableabout what is written.”
“Alice believe in the writtencontent because
it cites a trusted resource.”
Social Trust
Knowledge Justification
Knowledge Reference
Veracity Ontology
The Veracity ontology
http://purl.org/net/veracity/ns
FOAF
WOT
True or false ?
How much?[0..1]
How much [0…1]
Veracity Ontology
Veracity in Real-Life
Did Einstein work at the University of Berlin and was a Physicist ?
Alice needs to know if Einstein was really a Physicist and worked at the university of Berlin. Unfortunately she doesn’t know anything about Einstein:
– Can she trust the author of the proposition ? (Social Trust)– Does the author know about Einstein ? (Rational Trust, Knowledge Justification)– Is there any other existing information meaning the same ? (Rational Trust, Knowledge Reference)– Does anybody else know about it ?
Alice
Veracity Ontology
Veracity in Real-Life
Can I trust this author (Stephen Hawking) ?
Alice
Veracity Ontology
Veracity in Real-Life
Can I trust this author (Stephen Hawking) ?
Alice
Veracity
You don’t know who he is. You should probably not trust him.
Social
Veracity Ontology
Veracity in Real-Life
Can I trust this author (Stephen Hawking) ?
Alice
Veracity
You don’t know who he is. You should probably not trust him.
Does this author know about Einstein?
Alice
Social
Veracity Ontology
Veracity in Real-Life
Can I trust this author (Stephen Hawkins) ?
Alice
Veracity
You don’t know who he is. You should probably not trust him.
Does this author know about Einstein?
Alice
Yes, He is known to be a famous Physicist.
Social
Rational, Knowledge Justification
Veracity
Veracity Ontology
Veracity in Real-Life
Is there any other resources supporting this statement?
Alice
Veracity Ontology
Veracity in Real-Life
Is there any other resources supporting this statement?
Alice
Veracity
Yes, there is other trustworthy resources asserting similar propositions.
Rational, Knowledge Reference
Veracity Ontology
Veracity in Real-Life
Is there any other resources supporting this statement?
Alice
Veracity
Yes, there is other trustworthy resources asserting similar propositions.
Is there anybody else confirming that statement?
Alice
Rational, Knowledge Reference
Veracity Ontology
Veracity in Real-Life
Is there any other resources supporting this statement?
Alice
Veracity
Yes, there is other trustworthy resources asserting similar propositions.
Is there anybody else confirming that statement?
AliceYes, some people confirmed the current proposition. However, you should check if they are trustworthy.
Rational, Knowledge Reference
Veracity Ontology
Veracity vs. All
Prop. Ident.
Desc. Of
Trust.Agent Ident.
AgentCred.
Info.Supp.
Secure Assert.
Reliable Assert.
No Prev. Trust
Trust Ontology - - - -
WOT/Konfidi -
TRELLIS -
PML - -
Veracity
Abbreviations: = Yes. = Limited/Implicit. - = No.
Veracity Ontology
Conclusions
• Veracityis an abstract model and ontology .• Veracity introduces the concept of social trustworthiness and
rational trustworthiness• Veracity supports social and rational trustworthiness.• Veracity support recursive trust assertion.
• Veracity can be applied with different trust metrics.• Veracity is decentralised.• Veracity does not rely on trust assumptions.• Veracity ensure the integrity of trust statements (Digital Signature).
Veracity Ontology
Questions ?
http://purl.org/net/veracity/ns
Grégoire Burel, Amparo E. Cano, Matthew Rowe and Alfonso Sosa,{g.burel,e.cano,m.rowe,a.sosa}@dcs.shef.ac.uk
OAK Group - University Of Sheffield
Veracity Ontology