Sergio Alejandro Gómez

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Standard approaches to reasoning with Description Logics (DL) ontologies require them to be consistent. However, as ontologies are complex entities and sometimes built upon other imported ontologies, inconsistencies can arise. In this paper, we present a framework for reasoning with inconsistent DL ontologies. Our proposal involves expressing DL ontologies(More)
Many classification systems rely on clustering techniques in which a collection of training examples is provided as an input , and a number of clusters c1,. .. cm modeling some concept C results as an output, such that every cluster ci is labeled as positive or negative. In such a setting clusters can overlap, and a new unlabeled instance can be assigned to(More)
Many classification systems rely on clustering techniques in which a collection of training examples is provided as an input, and a number of clusters c 1 ,. .. c m modelling some concept C results as an output, such that every cluster c i is labelled as positive or negative. Given a new, unlabelled instance e new , the above classification is used to(More)
The field of machine learning (ML) is concerned with the question of how to construct algorithms that automatically improve with experience. In recent years many successful ML applications have been developed , such as datamining programs, information-filtering systems, etc. Although ML algorithms allow the detection and extraction of interesting patterns(More)
The notion of forms as a way of organizing and presenting data has been used since the beginning of the World Wide Web. Web-based forms have evolved together with the development of new markup languages, in which it is possible to provide validation scripts as part of the form code to test whether the intended meaning of the form is correct. However, for(More)
The notion of forms as a way of organizing and presenting data has long been used since the beginning of the WWW. Web-based forms have evolved together with the development of new markup languages (e.g., XML), in which it is possible to provide validation scripts as part of the form code in order to test whether the intended meaning of the form is correct.(More)
The Semantic Web is a future vision of the web where stored information has exact meaning, thus enabling computers to understand and reason on the basis of such information. Assigning semantics to web resources is addressed by means of ontology definitions which are meant to be written in an ontology description language such as OWL-DL that is based on(More)
OBJECTIVE Physical restraints are associated with severe side effects and suffering. A comprehensive, person-centered, methodology was implemented in 41 Spanish nursing homes to safely eliminate restraints. METHODS Data were collected in 2 waves: September 2011 (at the beginning of the intervention, n = 4361) and September 2014 (n = 5051). Use of 10(More)