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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 Sheffield

Anna Lisa Gentile

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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, Universit`a 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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