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AIM Nosocomial pneumonia (NP) and tracheobronchitis after cardiac surgery are associated with worse outcomes. The aim of this study was to identify risk factors associated with NP and tracheobronchitis after cardiac surgery and to determine the impact of these infections on hospital morbidity and mortality. METHODS We evaluated 1600 adult patients(More)
In recent years, automatic processing of opinions in text documents has received a growing interest. Some possible causes are the exponential increase of user-generated contents in Web 2.0, and also the interest of companies and governments in automatically analysing, filtering or detecting opinions from their customers or citizens. On the basis of some(More)
In most tasks related to opinion mining and sentiment analysis, it is necessary to compute the semantic orientation (i.e., positive or negative evaluative implications) of certain opinion expressions. Recent works suggest that semantic orientation depends on application domains. Moreover, we think that semantic orientation depends on the specific targets(More)