Proceedings of the Doctoral Symposium of the 33rd International Conference of the Spanish Society for Natural Language Processing September 19, 2017, Murcia, Spain Ángela Almela, Gema Alcaraz-Mármol, Rafael Valencia-García, Jesualdo Tomás Fernández-Breis (Eds.) PREFACE This volume contains papers from the Doctoral Symposium of the 33rd International Conference of the Spanish Society for Natural Language Processing, held on September 19, 2017, in Murcia, Spain. This scientific event convened PhD researchers with an interest in the latest research work and developments in the field of Natural Language Processing (NLP), employing computational techniques for the purpose of learning, understanding, and producing human language content, as well as new possibilities of real-world applications and R&D projects in this field. The present volume includes the fourteen following papers, submitted in both English and Spanish: • The language of thought Alberto Andreu Marín (Universidad de Jaén) • How to profile documents? Antonio Guillén Espejo (Universidad de Alicante) • Approach to modeling of cyberbullying from the perspective of the human language technologies Beatriz Botella (Universidad de Alicante) • Study of a hybrid approach for Natural Language Generation Cristina Barros (Universidad de Alicante) • Extraction of knowledge in textual documents Denis Cedeño-Moreno (Universidad Tecnológica de Panamá) • Emotion analysis in Spanish for the medical domain Flor M. Plaza del Arco (Universidad de Jaén) • Language and domain independent Named Entity Recognition and classification through profiles Isabel Moreno (Universidad de Alicante) • Sentiment Analysis for real-time applications Javier Fernández (Universidad de Alicante) • Use of discourse information for Basque sentiment analysis Jon Alkorta (Universidad del País Vasco) • Semi-automatic methodology to annotate emotional corpora Lea Canales (Universidad de Alicante) • Planning with positional language models to produce versatile Natural Language Generation systems Marta Vicente (Universidad de Alicante) • Named Entity Recognition in Spanish medical reports Pilar López Úbeda (Universidad de Jaén) • Negation detection in Spanish texts and application to Sentiment Analysis Salud María Jiménez-Zafra (Universidad de Jaén) • Automatic model for the suicide prevention by means of early detection of suicide messages in social networks Saray Zafra (Universidad de Alicante) Volume Editors: Ángela Almela, Universidad de Murcia, Spain Gema Alcaraz-Mármol, Universidad de Castilla-La Mancha, Spain Rafael Valencia-García, Universidad de Murcia, Spain Jesualdo Tomás Fernández-Breis, Universidad de Murcia, Spain Acknowledgements: The preparation of this Symposium has been possible thanks to the support of Fundación Séneca –Agency of Science and Technology of the Region of Murcia, through the 2017 call for the organization of conferences and scientific events, within the "Jiménez de la Espada" program for Mobility, Cooperation and Internationalization (Ref: 20138/OC/17). In addition, it has been possible thanks to PLN.NET (TIN2016-81739-REDT), an excellence network funded by the 2016 call of dynamization actions "REDES DE EXCELENCIA", within the State Program of Scientific and Technical Excellence Research, State Subprogram of Generation of Knowledge. Last but not least, thanks to all those who submitted papers to the symposium, agreed to review submitted papers, and contributed to discussions on the day. We also acknowledge the publisher CEUR-WS, which greatly aided the publication of this volume. Copyright © 2017 for the individual papers by the papers' authors. Copying permitted for private and academic purposes. This volume is published and copyrighted by its editors.