Abstract
Today a large amount of RDF data is published on the Web. However, the openness of the Web and the ease to combine RDF data from different sources creates new challenges. The Web of data is missing a uniform way to assess and to query the trustworthiness of information. In this paper we present tSPARQL, a trust-aware extension to SPARQL. Two additional keywords enable users to describe trust requirements and to query the trustworthiness of RDF data. Hence, tSPARQL allows adding trust to RDF-based applications in an easy manner. As the foundation we propose a trust model that associates RDF statements with trust values and we extend the SPARQL semantics to access these trust values in tSPARQL. Furthermore, we discuss opportunities to optimize the execution of tSPARQL queries.
Chapter PDF
Similar content being viewed by others
References
Golbeck, J., Parsia, B., Hendler, J.A.: Trust networks on the semantic web. In: Klusch, M., Omicini, A., Ossowski, S., Laamanen, H. (eds.) CIA 2003. LNCS, vol. 2782, pp. 238–249. Springer, Heidelberg (2003)
Ziegler, C.N., Lausen, G.: Spreading activation models for trust propagation. In: Proc. of EEE 2004 (March 2004)
Brondsema, D., Schamp, A.: Konfidi: Trust networks using PGP and RDF. In: Proc. of the Workshop on Models of Trust for the Web at WWW 2006 (May 2006)
Hartig, O.: Provenance information in the web of data. In: Proc. of the Linked Data on the Web Workshop at WWW 2009 (April 2009)
Zaihrayeu, I., da Silva, P.P., McGuinness, D.L.: IWTrust: Improving user trust in answers from the web. In: Herrmann, P., Issarny, V., Shiu, S.C.K. (eds.) iTrust 2005. LNCS, vol. 3477, pp. 384–392. Springer, Heidelberg (2005)
Gil, Y., Ratnakar, V.: Trusting information sources one citizen at a time. In: Horrocks, I., Hendler, J. (eds.) ISWC 2002. LNCS, vol. 2342, pp. 162–176. Springer, Heidelberg (2002)
Golbeck, J., Hendler, J.: FilmTrust: Movie recommendations using trust in web-based social networks. In: Proc. of CCNC 2006 (January 2006)
Prud’hommeaux, E., Seaborne, A.: SPARQL query language for RDF. W3C Recommendation (January 2008)
Hartig, O.: Specification for tSPARQL (December 2008), http://trdf.sf.net/documents/tsparql.pdf
Bizer, C., Schultz, A.: Benchmarking the performance of storage systems that expose SPARQL endpoints. In: Proc. of the Workshop on Scalable Semantic Web Knowledge Base Systems at ISWC 2008 (October 2008)
Carroll, J.J., Bizer, C., Hayes, P., Stickler, P.: Named graphs, provenance and trust. In: Proc. of WWW 2005 (May 2005)
Marsh, S.P.: Formalising Trust as a Computational Concept. PhD thesis, University of Stirling, Department of Mathematics and Computer Science (April 1994)
Bizer, C., Cyganiak, R., Gauss, T., Maresch, O.: The TriQL.P Browser: Filtering information using context-, content- and rating-based trust policies. In: Proc. of the Semantic Web and Policy Workshop at ISWC 2005 (November 2005)
Mazzieri, M.: A fuzzy RDF semantics to represent trust metadata. In: Proc. of Italian Workshop on Sem. Web Applications and Perspectives (December 2004)
Richardson, M., Agrawal, R., Domingos, P.: Trust management for the semantic web. In: Fensel, D., Sycara, K.P., Mylopoulos, J. (eds.) ISWC 2003. LNCS, vol. 2870, pp. 351–368. Springer, Heidelberg (2003)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Hartig, O. (2009). Querying Trust in RDF Data with tSPARQL. In: Aroyo, L., et al. The Semantic Web: Research and Applications. ESWC 2009. Lecture Notes in Computer Science, vol 5554. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02121-3_5
Download citation
DOI: https://doi.org/10.1007/978-3-642-02121-3_5
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-02120-6
Online ISBN: 978-3-642-02121-3
eBook Packages: Computer ScienceComputer Science (R0)