10th International Workshop on Scalable Semantic Web Knowledge Base Systems (SSWS 2014)

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At the 13th International Semantic Web Conference (ISWC2014), Riva del Garda, Italy October, 2014

SSWS 2014 PC Co-chairs’ Message SSWS 2014 is the tenth edition of the successful Scalable Semantic Web Knowledge Base Systems workshop series. The workshop series is focussed on addressing scalability issues with respect to the development and deployment of knowledge base systems on the Semantic Web. Typically, such systems deal with information described in Semantic Web languages such as OWL and RDF(S), and provide services such as storing, reasoning, querying and debugging. There are two basic requirements for these systems. First, they have to satisfy the applications semantic requirements by providing sucient reasoning support. Second, they must scale well in order to be of practical use. Given the sheer size and distributed nature of the Semantic Web, these requirements impose additional challenges beyond those addressed by earlier knowledge base systems. This workshop brought together researchers and practitioners to share their ideas regarding building and evaluating scalable knowledge base systems for the Semantic Web.

This year we received 9 submissions. Each paper was carefully evaluated by three workshop Program Committee members. Based on these reviews, we accepted 5 papers for presentation. We sincerely thank the authors for all the submissions and are grateful for the excellent work by the Program Committee members.

October 2014

Thorsten Liebig Achille Fokoue

Program Committee

Mihaela Bornea IBM Watson Research Center, USA

Oscar Corcho Univ. Politecnica de Madrid, Spain

Mike Dean Raytheon BBN Technologies, USA

Achille Fokoue IBM Watson Research Center, USA

Jhonatan Garcia University of Aberdeen, UK

Rau´l Garc´ıa-Castro Univ. Politecnica de Madrid, Spain

Volker Haarslev Condordia University, Canada

Anastasios Kementsietsidis Google Research, Mountain View, USA

Pavel Klinov Ulm University, Germany

Additional Reviewers

Yuan Ren University of Aberdeen, UK

Adila A. Krisnadhi Wright State University, Ohio, USA

Thorsten Liebig derivo GmbH, Germany

Ralf M¨oller Hamburg Univ. of Techn., Germany

Raghava Mutharaju Wright State University, Ohio, USA Je↵ Z. Pan University of Aberdeen, UK

Padmashree Ravindra North Carolina State University, USA

Mariano Rodriguez-Muro IBM Watson Research Center, USA

Pierpaolo Tommasi IBM Research, Dublin, Ireland

Takahira Yamaguchi Keio University, Japan

Jelena Vlasenko Free University of Bozen-Bolzano, Italy III

Invited Talk: RDFox A Modern Materialisation-Based RDF System . . . . . . . . . . . . . . . . . . . . .

Boris Motik The NPD Benchmark for OBDA Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Davide Lanti, Martin Rezk, Mindaugas Slusnys, Guohui Xiao and Diego Calvanese 1 3 Scheduling for SPARQL Endpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Fadi Maali, Islam A. Hassan and Stefan Decker Querying Distributed RDF Graphs: The E↵ects of Partitioning . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Anthony Potter, Boris Motik and Ian Horrocks A Distributed Query Execution Method for RDF Storage Managers . . . . . . . . . . . . . . . . . . . . . . 45

Kiyoshi Nitta and Iztok Savnik

References

Distributed OWL EL Reasoning: The Story So Far . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Raghava Mutharaju , Pascal Hitzler, Prabhaker Mateti