Papers by María Teresa Martín Valdivia
Detecting Negation Cues and Scopes in Spanish (2020.lrec-1)
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Salud María Jiménez-Zafra, Roser Morante, Eduardo Blanco, María Teresa Martín Valdivia, L. Alfonso Ureña López
| Challenge: | Negation is a phenomenon that "relates an expression e to another expression with a meaning that is in some way opposed to the meaning of e" previous work on negation in English has focused mostly and only recently on annotation tasks. |
| Approach: | They propose a machine learning system that processes negation in Spanish . they use a corpus from the SFU corpus to perform two tasks . |
| Outcome: | The proposed system outperforms state-of-the-art in negation cue detection and scope identification. |
MentalRiskES: A New Corpus for Early Detection of Mental Disorders in Spanish (2024.lrec-main)
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Alba M. Mármol Romero, Adrián Moreno Muñoz, Flor Miriam Plaza-del-Arco, M. Dolores Molina González, María Teresa Martín Valdivia, L. Alfonso Ureña-López, Arturo Montejo Ráez
| Challenge: | Existing studies on the prevalence of mental disorders on the Web are limited to the English language. |
| Approach: | They propose to use user messages posted on Telegram groups to annotate the corpus for natural language processing and to conduct experiments on text classification and regression. |
| Outcome: | The proposed corpus contains over 1,300 subjects with more than 45,000 messages posted in different public Telegram groups. |
CONAN-MT-SP: A Spanish Corpus for Counternarrative Using GPT Models (2024.lrec-main)
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María Estrella Vallecillo Rodríguez, Maria Victoria Cantero Romero, Isabel Cabrera De Castro, Arturo Montejo Ráez, María Teresa Martín Valdivia
| Challenge: | a new study evaluates the performance of GPT-based models to generate CNs for hate speech in Spanish . a growing number of social interactions through digital platforms have led to inappropriate behavior . |
| Approach: | They propose to use GPT-based models to generate CNs for Hate Speech in Spanish . they use the DeepL API to automatically translate the HS segment into Spanish based on the original CN pairs translated into spanish . |
| Outcome: | The proposed models outperform human models in most instances, the authors say . the results will be made available to the research community . |