| Vol-XXX urn:nbn:de:0074-XXX-C Copyright © 2015 for the individual papers by the papers' authors. Copying permitted only for private and academic purposes. This volume is published and copyrighted by its editors.

# DARe-15:
International Workshop on Defeasible and Ampliative Reasoning 2015

### Proceedings of the International Workshop on Defeasible and Ampliative Reasoning (DARe-15)
co-located with the 24th International Joint Conference on Artificial Intelligence (IJCAI 2015)

### Buenos Aires, Argentina, July 27, 2015.

Edited by

### Richard Booth *
Giovanni Casini **
Szymon Klarman ***
Gilles Richard ****
Ivan Varzinczak *****

* Mahasarakham University, Thailand
** University of Luxembourg, Luxembourg
*** Brunel University London, UK
**** Paul Sabatier University, Toulouse, France
***** Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

## Table of Contents

- Preface
- Organization

### Invited Talk

- Preferential Semantics as the Basis for Defeasible Reasoning in Ontologies
  Thomas Meyer

### Accepted papers

- When Conditional Logic and Belief Revision Meet Substructural Logics
  Guillaume Archer
- Ontology Repair Through Partial Meet Contraction
  Raphael Cobe, Renata Wassermann
- Natural Language Understanding as First-Order Abduction via Stable Models
  Petr Homola
- Arbitrary Announcements in Propositional Belief Revision
  Aaron Hunter, Francois Schwarzentruber
- Towards Unsupervised Ontology Learning from Data
  Szymon Klarman, Katarina Britz
- Finding Explanations: an Empirical Evaluation of Abductive Diagnosis Algorithms
  Roxane Koitz, Franz Wotawa
- Jumping to Conclusions
  Loizos Michael
- Between Belief Bases and Belief Sets: Partial Meet Contraction
  Yuri D. Santos, Marcio M. Ribeiro, Renata Wassermann

2015-08-12: submitted by Giovanni Casini
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