=Paper=
{{Paper
|id=None
|storemode=property
|title=None
|pdfUrl=https://ceur-ws.org/Vol-943/SSWS_HPCSW2012_preface.pdf
|volume=Vol-943
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==None==
https://ceur-ws.org/Vol-943/SSWS_HPCSW2012_preface.pdf
Joint Workshop on Scalable and
High-Performance Semantic Web
Systems (SSWS + HPCSW 2012)
At the 11th International Semantic Web Conference
(ISWC2012), Boston, USA, November, 2012
SSWS + HPCSW 2012 PC Co-chairs’ Message
For 2012, the 8th International Workshop on Scalable Semantic Web Knowledge
Base Systems (SSWS2012) and the 2nd Workshop on High-Performance Com-
puting for the Semantic Web (HPCSW2012) were merged together. This joint
workshop focused on addressing broader 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 lan-
guages like 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 application’s semantic requirements by provid-
ing sufficient 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 11 submissions. Each paper was carefully evaluated
by three workshop Program Committee members. Based on these reviews, we
accepted seven papers for presentation. We sincerely thank the authors for all the
submissions and are grateful for the excellent work by the Program Committee
members.
November 2012 Achille Fokoue
Thorsten Liebig
Eric Goodman
Jesse Weaver
Jacopo Urbani
David Mizell
Program Committee
Jans Aasman Anastasios Kementsietsidis
Franz, Inc. IBM Watson Research Center, USA
Robert Adolf Pavel Klinov
Pacific Northwest Nat. Lab., USA Ulm University, Germany
Sinan Al-Saffar Spyros Kotoulas
Pacific Northwest Nat. Lab., USA IBM Watson Research Center, USA
Alexey Cheptsov Thorsten Liebig
High Performance Computing Center derivo GmbH, Germany
Stgt, Germany
David Mizell
Oscar Corcho YarcData, Inc, USA
Univ. Politecnica de Madrid, Spain
Ralf Möller
Mike Dean Hamburg Univ. of Techn., Germany
BBN Technologies, USA
Jeff Z. Pan
Achille Fokoue University of Aberdeen, UK
IBM Watson Research Center, USA
Axel Polleres
Raúl Garcı́a-Castro Siemens AG, Österreich
Univ. Politecnica de Madrid, Spain
Mariano Rodriguez
Eric Goodman Free University of Bolzano, Italy
Sandia National Laboratories, USA
Sebastian Rudolph
Yuanbo Guo Karlsruhe Inst. of Techn., Germany
Microsoft, USA
Andy Seaborne
Volker Haarslev Epimorphics, UK
Condordia University, Canada
Kavitha Srinivas
David Haglin IBM Watson Research Center, USA
Pacific Northwest Nat. Lab., USA
Jacopo Urbani
Pascal Hitzler Vrije Universiteit Amsterdam, Nether-
Wright State University, Ohio, USA lands
Aidan Hogan Jesse Weaver
DERI Galway, Ireland Rensselaer Polytechnic Institute, USA
Bill Howe Gregory Todd Williams
University of Washington, USA Rensselaer Polytechnic Institute, USA
Cliff Joslyn Takahira Yamaguchi
Pacific Northwest Nat. Lab., USA Keio University, Japan
Additional Reviewers
Cong Wang Kevin Lee
Wright State University, Ohio, USA University of Aberdeen, UK
Table of Contents
FishMark: A Linked Data Application Benchmark . . . . . . . . . . . . . . . . . . . . 1
Samantha Bail, Sandra Alkiviadous, Bijan Parsia, David Workman,
Mark van Harmelen, Rafael S. Gonçalves and Cristina Garilao
The Combined Approach to OBDA: Taming Role Hierarchies using Filters 16
Carsten Lutz, Inanç Seylan, David Toman and Frank Wolter
Evaluation of Query Rewriting Approaches for OWL 2 . . . . . . . . . . . . . . . . 32
Héctor Pérez-Urbina, Edgar Rodrı́guez-Dı́az, Michael Grove, George
Konstantinidis and Evren Sirin
Triangle Finding: How Graph Theory can Help the Semantic Web . . . . . . . 45
Eric Goodman and Edward Jimenez
Cascading Map-Side Joins over HBase for Scalable Join Processing . . . . . . 59
Alexander Schätzle, Martin Przyjaciel-Zablocki, Christopher
Dorner, Thomas Hornung and Georg Lausen
Scalable Nonmonotonic Reasoning over RDF data using MapReduce . . . . 75
Ilias Tachmazidis, Grigoris Antoniou, Giorgos Flouris and Spyros
Kotoulas
A Scalability Metric for Parallel Computations on Large, Growing
Datasets (like the Web) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Jesse Weaver