Rafael Lopez

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This paper is dedicated to a study of different extensions of the classical knapsack problem to the case when different elements of the problem formulation are subject to a degree of uncertainty described by random variables. This brings the knapsack problem into the realm of stochastic programming. Two different model formulations are proposed, based on(More)
This paper is dedicated to a study of different extensions of the classical knapsack problem to the case when different elements of the problem formulation are subject to a degree of uncertainty described by random variables. This brings the knapsack problem into the realm of stochastic programming. Four different model formulations are proposed, based on(More)
A Web Information Retrieval course is quite appealing to Computer Science students and is quite challenging from the teacher's perspective, due to the limited knowledge of IR and Web IR of the students. In this paper we present our experience teaching a mainly practical Web IR course in order to exploit the programming skills of the common Computer Science(More)
Breakthrough cancer pain is defined as transient pain exacerbation in patients with stable and controlled basal pain. Although variable, the prevalence of breakthrough cancer pain is high (33%-95%). According to the American Pain Foundation, breakthrough pain is observed in 50%-90% of all hospitalized cancer patients, in 89% of all patients admitted to(More)
Lung cancer accounts for the highest number of cancer-related deaths worldwide. Early diagnosis significantly increases the disease-free survival rate and a large amount of effort has been expended in screening trials and the development of early molecular diagnostics. However, a gold standard diagnostic strategy is not yet available. Here, based on miRNA(More)
PURPOSE This study aims to determine the incidence of nausea and vomiting (CINV) after moderately emetogenic chemotherapy (MEC), under medical practice conditions and the accuracy with which physicians perceive CINV. METHODS Chemotherapy-naive patients receiving MEC between April 2012 and May 2013 were included. Patients completed a diary of the intensity(More)
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Today, most data is unstructured and much of it is in text form. Over 90% of the data that exists today has been created in the last 2 years alone. This creates enormous issues for organisation's. While there is a wealth of information online in websites, news, social media, reports, articles, an organisation needs to be able to effectively mine, analyse(More)
Otro aspecto a destacar es el hecho de que el 30% de estos tumores son metastáticos a su diagnóstico 3 , y que los pacientes sometidos a tratamiento quirúrgi-co en estadios localizados el 30% desarrollarán metás-tasis a lo largo de su evolución. A esto hay que sumar la diversidad morfológica de las neoplasias renales, llegando a plantearse la existencia de(More)