Roser Morante


2018

pdf bib
A review of Spanish corpora annotated with negation
Salud María Jiménez-Zafra | Roser Morante | Maite Martin | L. Alfonso Ureña-López
Proceedings of the 27th International Conference on Computational Linguistics

The availability of corpora annotated with negation information is essential to develop negation processing systems in any language. However, there is a lack of these corpora even for languages like English, and when there are corpora available they are small and the annotations are not always compatible across corpora. In this paper we review the existing corpora annotated with negation in Spanish with the purpose of first, gathering the information to make it available for other researchers and, second, analyzing how compatible are the corpora and how has the linguistic phenomenon been addressed. Our final aim is to develop a supervised negation processing system for Spanish, for which we need training and test data. Our analysis shows that it will not be possible to merge the small corpora existing for Spanish due to lack of compatibility in the annotations.

pdf bib
Scoring and Classifying Implicit Positive Interpretations: A Challenge of Class Imbalance
Chantal van Son | Roser Morante | Lora Aroyo | Piek Vossen
Proceedings of the 27th International Conference on Computational Linguistics

This paper reports on a reimplementation of a system on detecting implicit positive meaning from negated statements. In the original regression experiment, different positive interpretations per negation are scored according to their likelihood. We convert the scores to classes and report our results on both the regression and classification tasks. We show that a baseline taking the mean score or most frequent class is hard to beat because of class imbalance in the dataset. Our error analysis indicates that an approach that takes the information structure into account (i.e. which information is new or contrastive) may be promising, which requires looking beyond the syntactic and semantic characteristics of negated statements.

pdf bib
Proceedings of the Workshop on Computational Semantics beyond Events and Roles
Eduardo Blanco | Roser Morante
Proceedings of the Workshop on Computational Semantics beyond Events and Roles

pdf bib
Annotating Claims in the Vaccination Debate
Benedetta Torsi | Roser Morante
Proceedings of the 5th Workshop on Argument Mining

In this paper we present annotation experiments with three different annotation schemes for the identification of argument components in texts related to the vaccination debate. Identifying claims about vaccinations made by participants in the debate is of great societal interest, as the decision to vaccinate or not has impact in public health and safety. Since most corpora that have been annotated with argumentation information contain texts that belong to a specific genre and have a well defined argumentation structure, we needed to adjust the annotation schemes to our corpus, which contains heterogeneous texts from the Web. We started with a complex annotation scheme that had to be simplified due to low IAA. In our final experiment, which focused on annotating claims, annotators reached 57.3% IAA.

pdf bib
Systems’ Agreements and Disagreements in Temporal Processing: An Extensive Error Analysis of the TempEval-3 Task
Tommaso Caselli | Roser Morante
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

pdf bib
Resource Interoperability for Sustainable Benchmarking: The Case of Events
Chantal van Son | Oana Inel | Roser Morante | Lora Aroyo | Piek Vossen
Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)

2017

pdf bib
Proceedings of the Workshop Computational Semantics Beyond Events and Roles
Eduardo Blanco | Roser Morante | Roser Saurí
Proceedings of the Workshop Computational Semantics Beyond Events and Roles

pdf bib
Annotating Negation in Spanish Clinical Texts
Noa Cruz | Roser Morante | Manuel J. Maña López | Jacinto Mata Vázquez | Carlos L. Parra Calderón
Proceedings of the Workshop Computational Semantics Beyond Events and Roles

In this paper we present on-going work on annotating negation in Spanish clinical documents. A corpus of anamnesis and radiology reports has been annotated by two domain expert annotators with negation markers and negated events. The Dice coefficient for inter-annotator agreement is higher than 0.94 for negation markers and higher than 0.72 for negated events. The corpus will be publicly released when the annotation process is finished, constituting the first corpus annotated with negation for Spanish clinical reports available for the NLP community.

2016

pdf bib
Unshared Task at the 3rd Workshop on Argument Mining: Perspective Based Local Agreement and Disagreement in Online Debate
Chantal van Son | Tommaso Caselli | Antske Fokkens | Isa Maks | Roser Morante | Lora Aroyo | Piek Vossen
Proceedings of the Third Workshop on Argument Mining (ArgMining2016)

pdf bib
Pragmatic Factors in Image Description: The Case of Negations
Emiel van Miltenburg | Roser Morante | Desmond Elliott
Proceedings of the 5th Workshop on Vision and Language

pdf bib
Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics (ExProM)
Eduardo Blanco | Roser Morante | Roser Saurí
Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics (ExProM)

pdf bib
Building a Dictionary of Affixal Negations
Chantal van Son | Emiel van Miltenburg | Roser Morante
Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics (ExProM)

This paper discusses the need for a dictionary of affixal negations and regular antonyms to facilitate their automatic detection in text. Without such a dictionary, affixal negations are very difficult to detect. In addition, we show that the set of affixal negations is not homogeneous, and that different NLP tasks may require different subsets. A dictionary can store the subtypes of affixal negations, making it possible to select a certain subset or to make inferences on the basis of these subtypes. We take a first step towards creating a negation dictionary by annotating all direct antonym pairs inWordNet using an existing typology of affixal negations. By highlighting some of the issues that were encountered in this annotation experiment, we hope to provide some insights into the necessary steps of building a negation dictionary.

pdf bib
GRaSP: A Multilayered Annotation Scheme for Perspectives
Chantal van Son | Tommaso Caselli | Antske Fokkens | Isa Maks | Roser Morante | Lora Aroyo | Piek Vossen
Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16)

This paper presents a framework and methodology for the annotation of perspectives in text. In the last decade, different aspects of linguistic encoding of perspectives have been targeted as separated phenomena through different annotation initiatives. We propose an annotation scheme that integrates these different phenomena. We use a multilayered annotation approach, splitting the annotation of different aspects of perspectives into small subsequent subtasks in order to reduce the complexity of the task and to better monitor interactions between layers. Currently, we have included four layers of perspective annotation: events, attribution, factuality and opinion. The annotations are integrated in a formal model called GRaSP, which provides the means to represent instances (e.g. events, entities) and propositions in the (real or assumed) world in relation to their mentions in text. Then, the relation between the source and target of a perspective is characterized by means of perspective annotations. This enables us to place alternative perspectives on the same entity, event or proposition next to each other.

pdf bib
VUACLTL at SemEval 2016 Task 12: A CRF Pipeline to Clinical TempEval
Tommaso Caselli | Roser Morante
Proceedings of the 10th International Workshop on Semantic Evaluation (SemEval-2016)

2015

pdf bib
SPINOZA_VU: An NLP Pipeline for Cross Document TimeLines
Tommaso Caselli | Antske Fokkens | Roser Morante | Piek Vossen
Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015)

pdf bib
Proceedings of the Second Workshop on Extra-Propositional Aspects of Meaning in Computational Semantics (ExProM 2015)
Eduardo Blanco | Roser Morante | Caroline Sporleder
Proceedings of the Second Workshop on Extra-Propositional Aspects of Meaning in Computational Semantics (ExProM 2015)

2014

pdf bib
Proceedings of the Eighteenth Conference on Computational Natural Language Learning
Roser Morante | Scott Wen-tau Yih
Proceedings of the Eighteenth Conference on Computational Natural Language Learning

2012

pdf bib
ConanDoyle-neg: Annotation of negation cues and their scope in Conan Doyle stories
Roser Morante | Walter Daelemans
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

pdf bib
The Netlog Corpus. A Resource for the Study of Flemish Dutch Internet Language
Mike Kestemont | Claudia Peersman | Benny De Decker | Guy De Pauw | Kim Luyckx | Roser Morante | Frederik Vaassen | Janneke van de Loo | Walter Daelemans
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

pdf bib
Modality and Negation: An Introduction to the Special Issue
Roser Morante | Caroline Sporleder
Computational Linguistics, Volume 38, Issue 2 - June 2012

pdf bib
Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics
Roser Morante | Caroline Sporleder
Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics

pdf bib
Processing modality and negation
Roser Morante
Tutorial Abstracts at the Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

pdf bib
A Statistical Relational Learning Approach to Identifying Evidence Based Medicine Categories
Mathias Verbeke | Vincent Van Asch | Roser Morante | Paolo Frasconi | Walter Daelemans | Luc De Raedt
Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning

pdf bib
*SEM 2012 Shared Task: Resolving the Scope and Focus of Negation
Roser Morante | Eduardo Blanco
*SEM 2012: The First Joint Conference on Lexical and Computational Semantics – Volume 1: Proceedings of the main conference and the shared task, and Volume 2: Proceedings of the Sixth International Workshop on Semantic Evaluation (SemEval 2012)

2011

pdf bib
Corpus-based approaches to processing the scope of negation cues: an evaluation of the state of the art
Roser Morante | Sarah Schrauwen | Walter Daelemans
Proceedings of the Ninth International Conference on Computational Semantics (IWCS 2011)

2010

pdf bib
Semantic Role Labeling of Gene Regulation Events: Preliminary Results
Roser Morante
Proceedings of the 2010 Workshop on Biomedical Natural Language Processing

pdf bib
Memory-Based Resolution of In-Sentence Scopes of Hedge Cues
Roser Morante | Vincent Van Asch | Walter Daelemans
Proceedings of the Fourteenth Conference on Computational Natural Language Learning – Shared Task

pdf bib
Proceedings of the Workshop on Negation and Speculation in Natural Language Processing
Roser Morante | Caroline Sporleder
Proceedings of the Workshop on Negation and Speculation in Natural Language Processing

pdf bib
Descriptive Analysis of Negation Cues in Biomedical Texts
Roser Morante
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

pdf bib
SemEval-2010 Task 10: Linking Events and Their Participants in Discourse
Josef Ruppenhofer | Caroline Sporleder | Roser Morante | Collin Baker | Martha Palmer
Proceedings of the 5th International Workshop on Semantic Evaluation

2009

pdf bib
Dependency Parsing and Semantic Role Labeling as a Single Task
Roser Morante | Vincent Van Asch | Antal van den Bosch
Proceedings of the International Conference RANLP-2009

pdf bib
A Metalearning Approach to Processing the Scope of Negation
Roser Morante | Walter Daelemans
Proceedings of the Thirteenth Conference on Computational Natural Language Learning (CoNLL-2009)

pdf bib
Joint Memory-Based Learning of Syntactic and Semantic Dependencies in Multiple Languages
Roser Morante | Vincent Van Asch | Antal van den Bosch
Proceedings of the Thirteenth Conference on Computational Natural Language Learning (CoNLL 2009): Shared Task

pdf bib
Learning the Scope of Hedge Cues in Biomedical Texts
Roser Morante | Walter Daelemans
Proceedings of the BioNLP 2009 Workshop

pdf bib
A memory-based learning approach to event extraction in biomedical texts
Roser Morante | Vincent Van Asch | Walter Daelemans
Proceedings of the BioNLP 2009 Workshop Companion Volume for Shared Task

pdf bib
SemEval-2010 Task 10: Linking Events and Their Participants in Discourse
Josef Ruppenhofer | Caroline Sporleder | Roser Morante | Collin Baker | Martha Palmer
Proceedings of the Workshop on Semantic Evaluations: Recent Achievements and Future Directions (SEW-2009)

2008

pdf bib
Learning the Scope of Negation in Biomedical Texts
Roser Morante | Anthony Liekens | Walter Daelemans
Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing

pdf bib
Semantic Role Labeling Tools Trained on the Cast3LB-CoNNL-SemRol Corpus
Roser Morante
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)

pdf bib
CNTS: Memory-Based Learning of Generating Repeated References
Iris Hendrickx | Walter Daelemans | Kim Luyckx | Roser Morante | Vincent Van Asch
Proceedings of the Fifth International Natural Language Generation Conference

pdf bib
A Combined Memory-Based Semantic Role Labeler of English
Roser Morante | Walter Daelemans | Vincent Van Asch
CoNLL 2008: Proceedings of the Twelfth Conference on Computational Natural Language Learning

2007

pdf bib
ILK2: Semantic Role Labeling of Catalan and Spanish using TiMBL
Roser Morante | Bertjan Busser
Proceedings of the Fourth International Workshop on Semantic Evaluations (SemEval-2007)

pdf bib
ILK: Machine learning of semantic relations with shallow features and almost no data
Iris Hendrickx | Roser Morante | Caroline Sporleder | Antal van den Bosch
Proceedings of the Fourth International Workshop on Semantic Evaluations (SemEval-2007)

pdf bib
Dialogue Simulation and Context Dynamics for Dialogue Management
Simon Keizer | Roser Morante
Proceedings of the 16th Nordic Conference of Computational Linguistics (NODALIDA 2007)