Abstract
Trust is a broad concept which, in many systems, is reduced
to reputation estimation. However, reputation is just one way of determining
trust. The estimation of trust can be tackled from other perspectives
as well, including by looking at provenance. In this work, we
look at the combination of reputation and provenance to determine trust
values. Concretely, the first contribution of this paper is a standard procedure
for computing reputation-based trust assessments. The second is
a procedure for computing trust values based on provenance information,
represented by means of the W3C standard model PROV. Finally,
we demonstrate how merging the results of these two procedures can be
beneficial for the reliability of the estimated trust value.
We evaluate our procedures and hypothesis by estimating and verifying
the trustworthiness of the tags created within the Waisda? video tagging
game, launched by the Netherlands Institute for Sound and Vision.
Within Waisda?, tag trustworthiness is estimated on the basis of user
consensus. Hence, we first provide a means to represent user consensus
in terms of trust values, and then we predict the trustworthiness of tags
based on reputation, provenance and a combination of the two. Through
a quantitative analysis of the results, we demonstrate that using provenance
information is beneficial for the accuracy of trust assessments.
Original language | English |
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Title of host publication | Proceedings of the 8th Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2012), 11-12 November 2012, Boston, Massachussetts |
Pages | 15-26 |
Publication status | Published - 2012 |
Event | 8th International Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2012) - Boston, United States Duration: 11 Nov 2012 → 11 Nov 2012 Conference number: 8 http://c4i.gmu.edu/ursw/2012/ |
Workshop
Workshop | 8th International Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2012) |
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Abbreviated title | URSW 2012 |
Country/Territory | United States |
City | Boston |
Period | 11/11/12 → 11/11/12 |
Internet address |