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      <title-group>
        <article-title>11th International Workshop on Scalable Semantic Web Knowledge Base Systems (SSWS 2015)</article-title>
      </title-group>
      <contrib-group>
        <aff id="aff0">
          <label>0</label>
          <institution>At the 14th International Semantic Web Conference (ISWC2015)</institution>
          ,
          <addr-line>Bethlehem, PA, USA October, 2015</addr-line>
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    <sec id="sec-1">
      <title>-</title>
      <p>SSWS 2015 PC Co-chairs’ Message
SSWS 2015 is the eleventh 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.</p>
      <p>This year we received 6 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.</p>
    </sec>
    <sec id="sec-2">
      <title>October 2015</title>
    </sec>
    <sec id="sec-3">
      <title>Thorsten Liebig Achille Fokoue</title>
      <sec id="sec-3-1">
        <title>Program Committee</title>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>Achille Fokoue IBM Watson Research Center, USA</title>
    </sec>
    <sec id="sec-5">
      <title>Rau´l Garc´ıa-Castro Univ. Politecnica de Madrid, Spain</title>
    </sec>
    <sec id="sec-6">
      <title>Bernado Cuenca Grau University of Oxford, UK</title>
    </sec>
    <sec id="sec-7">
      <title>Volker Haarslev Condordia University, Canada</title>
    </sec>
    <sec id="sec-8">
      <title>Anastasios Kementsietsidis Google Research, Mountain View, USA</title>
    </sec>
    <sec id="sec-9">
      <title>Pavel Klinov Complexible Inc., USA</title>
    </sec>
    <sec id="sec-10">
      <title>Adila A. Krisnadhi Wright State University, Ohio, USA</title>
      <sec id="sec-10-1">
        <title>Additional Reviewers</title>
      </sec>
    </sec>
    <sec id="sec-11">
      <title>Zixi Quan Condordia University, Canada</title>
    </sec>
    <sec id="sec-12">
      <title>Thorsten Liebig derivo GmbH, Germany</title>
    </sec>
    <sec id="sec-13">
      <title>Raghava Mutharaju Wright State University, Ohio, USA</title>
    </sec>
    <sec id="sec-14">
      <title>Padmashree Ravindra North Carolina State University, USA</title>
    </sec>
    <sec id="sec-15">
      <title>Mariano Rodr´ıguez-Muro IBM Watson Research Center, USA</title>
    </sec>
    <sec id="sec-16">
      <title>Boris Motik University of Oxford, UK</title>
    </sec>
    <sec id="sec-17">
      <title>Supriyo Chakaraborty IBM Watson Research Center, USA</title>
    </sec>
    <sec id="sec-18">
      <title>Takahira Yamaguchi Keio University, Japan III</title>
      <p>Invited Talk: Making a Silk Purse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .</p>
      <p>David Mizell</p>
    </sec>
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            <surname>The OWL Reasoner Evaluation (ORE) 2015 Competition</surname>
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          <article-title>On the Evaluation of RDF Distribution Algorithms Implemented over Apache Spark</article-title>
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            <surname>Cur</surname>
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          <string-name>
            <surname>Reifying</surname>
            <given-names>RDF</given-names>
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          :
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            <surname>What Works Well With</surname>
            <given-names>Wikidata? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Daniel</given-names>
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          <article-title>Dynamic join order optimization for SPARQL endpoint federation</article-title>
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      <ref id="ref5">
        <mixed-citation>
          <string-name>
            <given-names>Parallel</given-names>
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          <article-title>Loading during Querying Deep Web and Linked Open Data with SPARQL</article-title>
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