Sergio Alejandro Gómez

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The prenatal and postnatal development of calretinin (CR)-containing elements in the neocortex of the rat was analyzed using immunohistochemistry. CR immunoreactivity in the cortical anlage appeared early at embryonic day 14 (E14), with CR-positive neurons located in the primitive plexiform layer and in the emerging subplate and marginal zones. At later(More)
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)
BACKGROUND Demographics, outcome, and management of idiopathic thrombocytopenic purpura (ITP) in children present differences between countries. Although several factors influence outcome, it is impossible to predict at diagnosis which patients will have acute or chronic disease. High rates of spontaneous remission in chronic ITP have been reported. (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)