Horacio Rodriguez

Horacio Rodriguez
Universitat Politècnica de Catalunya | UPC · Department of Software (LSI)

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10
Publications
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Publications

Publications (10)
Chapter
Named Entity Recognition in the clinical domain and in languages different from English has the difficulty of the absence of complete dictionaries, the informality of texts, the polysemy of terms, the lack of accordance in the boundaries of an entity, the scarcity of corpora and of other resources available. We present a Named Entity Recognition me...
Article
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A semantic tagger aiming to detect relevant entities in Arabic medical documents and tagging them with their appropriate semantic class is presented. The system takes profit of a Multilingual Framework covering four languages (Arabic, English, French, and Spanish), in a way that resources available for each language can be used to improve the resul...
Conference Paper
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Identification of the certainty of events is an important text mining problem. In particular, biomedical texts report medical conditions or findings that might be factual, hedged or negated. Identification of negation and its scope over a term of interest determines whether a finding is reported and is a challenging task. Not much work has been per...
Conference Paper
Domain terms are a useful mean for tuning both resources and NLP processors to domain specific tasks. This paper proposes an improved method for obtaining terms from potentially any domain using the Wikipedia graph structure as a knowledge source.
Article
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Paraphrase corpora annotated with the types of paraphrases they contain constitute an essential resource for the understanding of the phenomenon of paraphrasing and the improvement of paraphrase-related systems in natural language processing. In this article, a new annotation scheme for paraphrase-type annotation is set out, together with newly cre...
Article
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A precise and commonly accepted definition of paraphrasing does not exist. This is one of the reasons that have prevented computational linguistics from a real success when dealing with this phenomenon in its systems and applications. With the aim of helping to overcome this difficulty, in this article, new insights on paraphrase characterization a...
Book
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We are delighted to hereby present the proceedings of CHAT 2012. Altogether, 7 papers have been selected for presentation (4 regular papers and 3 short papers). The workshop papers cover various topics on automated approaches to terminology extraction and creation of terminology resources, compiling multilingual terminology, ensuring interoperabili...
Article
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La creciente demanda de sistemas que respondan de forma precisa y escueta a las necesidades de información de los usuarios ha potenciado la aparición de un nuevo campo de investigación: la Búsqueda de Respuestas (BR). El objetivo de la investigación en este campo va mucho más allá de la simple localización de documentos relevantes realizadas por lo...
Article
Resumen: Presentamos en este artículo cuatro aproximaciones al georeferenciado genérico de anotaciones textuales multilingües y etiquetas semánticas. Las cuatro aproximaciones se basan en el uso de 1) Conocimiento geográfico, 2) Modelos del lenguaje (LM), 3) Modelos del lenguaje con predicciones re-ranking y 4) Fusión de las predicciones basadas en...

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Projects

Projects (2)
Project
In this project, we design and implement an ontology-based QA system. We analyze the effectiveness of NLP techniques, constraints, query mapping, and answer inference as well as in Closed and Open domains.