Preface

This volume contains the papers presented at LD4IE2015: Linked Data for In-
formation Extraction held on October 12th, 2015 in Bethlehem, Pennsylvania, in
conjunction with the 14th International Semantic Web Conference (ISWC2015).
Additional workshop details can be found at http://oak.dcs.shef.ac.uk/ld4ie2015
The program committee selected 5 full papers for the program of LD4IE2015. In
addition, the workshop, at its third edition, included an Information Extraction
(IE) challenge. Training and test corpora for the challenge had been created
with an innovative mothod described in the invited paper ”Creating Large-scale
Training and Test Corpora for Extracting Structured Data from the Web”.
    The invited speaker for LD4IE2015 is Dr. Chris Welty, a Sr. Research Scien-
tist at Google in New York, and an Endowed Professor of Cognitive Systems at
the VU University, Amsterdam. His main area of interest is using structured se-
mantic information to improve semantic processing of unstructured information,
such as using freebase to help improve web search. His latest work is on using
crowdsourcing to form a new theory of truth based on diversity of perspectives
and his talk at LD4IE2015 is titled ”Goodbye to True: Advancing semantics
beyond the black and white”.

    Program
    9:00 - 9:30 CrowdTruth Measures for Language Ambiguity: The Case of Med-
ical Relation Extraction. Anca Dumitrache, Lora Aroyo and Chris Welty.
    9:30 - 10:00 Semantic Annotation of Quantitative Textual Content. Mehrnaz
Ghashghaei, John Cuzzola, Ebrahim Bagheri and Ali Ghorbani.
    10:00 - 10:30 A Topic-Sensitive Model for Salient Entity Linking. Lei Zhang,
Cong Liu and Achim Rettinger.
    10:30 - 11:00 Coffee Break
    11:00 - 11:30 Topic Modeling for RDF Graphs. Jennifer Sleeman, Tim Finin
and Anupam Joshi.
    11:30 - 12:00 Semantic Relation Composition in Large Scale Knowledge
Bases. Kristian Kolthoff and Arnab Dutta.
    12:00 - 12:30 IE challenge presentation. Heiko Paulheim.
    12:30 - 14:00 Lunch Break
    14:00 - 15:15 Invited Talk: Goodbye to True: Advancing semantics beyond
the black and white. Chris Welty.
    15:15 - 15:30 Closing and Awards.
    15:30 - 16:00 Coffee Break


October 6, 2015                                              Anna Lisa Gentile
Sheffield




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Table of Contents

Goodbye to True: Advancing semantics beyond the black and white . . . . .                                           1
  Chris Welty
Creating Large-scale Training and Test Corpora for Extracting
Structured Data from the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .              2
   Robert Meusel and Heiko Paulheim

CrowdTruth Measures for Language Ambiguity: The Case of Medical
Relation Extraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   Anca Dumitrache, Lora Aroyo and Chris Welty
Semantic Annotation of Quantitative Textual Content . . . . . . . . . . . . . . . . .                               20
   Mehrnaz Ghashghaei, John Cuzzola, Ebrahim Bagheri and Ali Ghor-
   bani
Semantic Relation Composition in Large Scale Knowledge Bases . . . . . . . .                                        34
   Kristian Kolthoff and Arnab Dutta
Topic Modeling for RDF Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .               48
   Jennifer Sleeman, Tim Finin and Anupam Joshi
A Topic-Sensitive Model for Salient Entity Linking . . . . . . . . . . . . . . . . . . . .                          63
   Lei Zhang, Cong Liu and Achim Rettinger




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Program Committee

Rabeeh Ayaz Abbasi        Quaid-i-Azam University
Payam Barnaghi            University of Surrey
Pierpaolo Basile          Dipartimento di Informatica - University of Bari
Christopher Brewster      Aston Business School, Aston University, Birming-
                          ham, UK
Paul Buitelaar            Insight - National University of Ireland, Galway
Claudia D’Amato           University of Bari
Brian Davis               DERI NUIG
Ernesto William De Luca Georg-Eckert-Institute – Leibniz-Institute for inter-
                          national Textbook Research
Christina Feilmayr        Johannes Kepler University of Linz
Miriam Fernandez          Open University
Anna Lisa Gentile         University of Sheffield
Katja Hose                Aalborg University
Craig Knoblock            University of Southern California
Petr Knoth                KMi, The Open University
Pablo Mendes              IBM Research Almaden
Andrea Moro               Sapienza, Università di Roma
Varish Mulwad             University of Maryland, Baltimore County
Matthias Nickles          National University of Ireland, Galway, Digital En-
                          terprise Research Institute
Andrea Giovanni Nuzzolese STLab, ISTC-CNR
Heiko Paulheim            University of Mannheim
Simone Paolo Ponzetto     University of Mannheim
Jay Pujara                University of Maryland
Disheng Qiu               University of Roma Tre
Will Radford              Xerox Research Centre Europe
Martin Riedl              TU Darmstadt
Giuseppe Rizzo            EURECOM
Monika Solanki            University of Oxford
Volker Tresp              Siemens AG
Victoria Uren             Aston University
Chris Welty               Google
Ziqi Zhang                University of Sheffield




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