CALL FOR PARTICIPATION
NEGES 2018: Workshop on Negation in Spanish
Held as part of the XXXIV edition of the International Conference of the Spanish Society for Natural Language Processing (SEPLN 2018)
September 18, 2018. Seville, Spain
Webpage: http://www.sepln.org/workshops/neges/index.php
About the workshop
Negation is a complex linguistic phenomenon that has been extensively studied from a theoretical perspective but not practical. Detection and treatment of negation is relevant in a wide range of applications such as information extraction, machine translation or sentiment analysis where it is crucial to know when a part of the text should have a different meaning due to the presence of negation. This part of the text is what is known as the scope. Negation detection is becoming an important task in Natural Language Processing. In fact, in recent years, several challenges and shared tasks have included the extraction of this element. However, most of the research on negation has been done for English. Therefore, this workshop aims to advance the study of this phenomenon in Spanish, the second most widely spoken language in the world and the third most widely used on the Internet. The main objective is to bring together the scientific community that is working on this issue to discuss how this phenomenon is being addressed, what are the main problems encountered, as well as sharing resources and tools aimed at negation in Spanish.
Tasks
Task 1: Annotation guidelines
The objective of this task is to reach an agreement on the guidelines to follow for the annotation of negation. The corpora annotated so far in Spanish belong to 3 domains (news, clinical reports and product reviews) and are based on different guidelines. In this task, the guides used for the annotation of the corpora will be made available to the participants so they can analyze them. Once the analysis period has elapsed, participants must send a document indicating which aspects of the guidelines they agree with and which they do not, all duly justified. This information will be sent to the participants, prior to the workshop, so that during the workshop we can discuss the aspects of interest and reach a consensus.
Task 2: Negation cues detection
The aim of this task is to advance in the identification of negation cues automatically. To do this, the participants must develop a system able to identify all the negation cues present in a document. The SFU ReviewSP-NEG corpus (Jiménez-Zafra et al., 2017) will be used to train and test the systems.
Task 3: Sentiment analysis
It is a specific task whose objective is to evaluate the role of negation in sentiment analysis. In this case, participants should develop a system that uses the negation information contained in the SFU ReviewSP-NEG corpus (Jiménez-Zafra et al., 2017) to improve the task of polarity classification.
Jiménez-Zafra, S. M., Taulé, M., Martín-Valdivia, M. T., Ureña-López, L. A., & Martí, M. A. (2017). SFU ReviewSP-NEG: a Spanish corpus annotated with negation for sentiment analysis. A typology of negation patterns. Language Resources and Evaluation, 1-37.
https://doi.org/10.1007/s10579-017-9391-x
Important dates
April 20, 2018: Registration open
May 14, 2018: Training and development sets released
June 13, 2018: Test set released
June 27, 2018: Submission end
July 9, 2018: Results posted
July 16, 2018: Deadline for paper submission
July 20, 2018: Notification of acceptance
July 27, 2018: Deadline for camera ready paper submission
September 18, 2018: Workshop NEGES (SEPLN 2018, Sevilla)
Papers submission
Participants can send a document for each task with the description of their system. Submitted papers must follow SEPLN format (LaTeX or Word) and must have at least 4 pages (plus references) and a maximum of 8 pages (plus references). The papers presented will be reviewed by a scientific committee and those accepted will be published in CEUR.
Organizing comittee
Salud María Jiménez Zafra, sjzafra [at] ujaen.es (Universidad de Jaén, Spain)
Maite Martín Valdivia, maite [at] ujaen.es (Universidad de Jaén, Spain)
Noa Cruz Díaz, contact [at] noacruz.com (Savana Médica, Madrid, Spain)
Roser Morante, r.morantevallejo [at] vu.nl (VU Amsterdam, Netherlands)
Program comittee
Altuna, Begoña (Universidad del País Vasco, Spain)
Bel, Nuria (Universitat Pompeu Fabra, Spain)
Blanco, Eduardo (University of North Texas, USA)
Carrillo de Albornoz, Jorge (UNED, Spain)
Casillas, Arantza (Universidad del País Vasco, Spain)
Cruz Díaz, Noa (Savana Médica, Madrid, Spain)
Fernández-Gavilanes, Milagros (Universidad de Vigo, Spain)
García Méndez, Silvia (Universidad de Vigo, Spain)
Jiménez Zafra, Salud María (Universidad de Jaén, Spain)
Maña, Manuel (Universidad de Huelva, Spain)
Marimón, Montserrat (Universitat Pompeu Fabra, Spain)
Martí, M. Antonia (Universitat de Barcelona, Spain)
Martín Valdivia, Maite (Universidad de Jaén, Spain)
Martínez, Paloma (Universidad Carlos III, Madrid, Spain)
Martínez Barco, Patricio (Universidad de Alicante, Spain)
Martínez-Cámara, Eugenio (Universidad de Granada, Spain)
Morante, Roser (VU Amsterdam, Netherlands)
Segura, Isabel (Universidad Carlos III, Madrid, Spain)
Taboada, Maite (Simon Fraser University, Canada)
Taulé, Mariona (Universitat de Barcelona, Spain)
Vilares, David (Universidad de la Coruña, Spain)
Vivaldi, Jorge (Universitat Pompeu Fabra, Spain)
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