Now showing items 21-29 of 29

    • On the measure and the estimation of the evenness and diversity of vocabulary 

      Ginebra Molins, Josep; Puig Oriol, Xavier (2010)
      Article
      Restricted access - publisher's policy
      Modelling word or species frequency count data through zero truncated Poisson mixture models allows one to interpret the model mixing distribution as the distribution of the word or species frequencies of the vocabulary ...
    • Prognosi del Gran Premi de Formula 1 en el Circuit de Catalunya de l’any 2017 

      Álvarez Berezo, Sergio (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2018-07)
      Bachelor thesis
      Open Access
      (cat) L'objectiu principal d'aquest treball consisteix a intentar predir el resultat final de la cursa de la Formula 1 del Gran Premi de Catalunya, realitzada al circuit de Montmeló a l'any 2017. Per tal de poder complir ...
    • Redes Neuronales Recurrentes: Una aplicación para los mercados bursátiles 

      Agustín Granell, Pau (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2018-07)
      Bachelor thesis
      Open Access
      (spa) Las redes neuronales recurrentes (LSTM) son una técnica muy popular para aprendizaje en secuencia. Sus características la convierten en una buena candidata para resolver uno de los problemas más difíciles de resolver ...
    • Systems of possibilistic regressions: a case study in ecological inference 

      Donoso, Sergi; Marín Ruíz, Nicolás; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
      Article
      Open Access
      This work introduces how possibilistic regression can be used in the case of non symmetrical triangular membership functions, building a system of regressions, so that suitable restrictions for each particular problem can ...
    • The digital practices of the elderly population, an international comparison 

      Lu Li (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2018-07)
      Bachelor thesis
      Open Access
      (eng) The popularity of the Internet has changed the way people live. However, we know very little about the Internet use of older people. This study focuses on senior’s Internet and mobile phone use in three countries. ...
    • The impact of immigration and vaccination in reducing the incidence of hepatitis B in Catalonia (Spain) 

      Oviedo de La Fuente, Manuel; Muñoz Gracia, María del Pilar; Carmona, Gloria; Borras, Eva; Batalla, Joan; Soldevila, Nuria; Domínguez, Àngela (2012-08-06)
      Article
      Open Access
      Background The Hepatitis B virus (HBV) infection is a major cause of liver disease and liver cancer worldwide according to the World Health Organization. Following acute HBV infection, 1-5% of infected healthy adults ...
    • The time has come: Statistics in bestselling books 

      Grima Cintas, Pedro; Marco Almagro, Lluís (Sociedad de Estadística e Investigación Operativa (SEIO), 2013-10)
      Article
      Open Access
      Beyond textbooks, statistics is also present in bestselling books, those that appear on the top 10 lists of bookshops and online bookstores. This paper discusses five of those books, highlighting the role of statistics ...
    • Transfer function and time series outlier analysis: modelling Soil salinity in loamy sand soil by including the influences of irrigation management and soil temperature 

      Aljoumani, Basem; Sánchez Espigares, Josep Anton; Cañameras Riba, Núria; Wessdek, Gerd; Josa March, Ramon (2017-12-13)
      Article
      Open Access
      In variable interval irrigation, simply including soil salinity data in the soil salinity model is not valid for making predictions, because changes in irrigation frequency must also be taken into account. This study on ...
    • Wind turbine fault detection through principal component analysis and statistical hypothesis testing 

      Pozo Montero, Francesc; Vidal Seguí, Yolanda (2016)
      Article
      Open Access
      This paper addresses the problem of online fault detection of an advanced wind turbine benchmark under actuators (pitch and torque) and sensors (pitch angle measurement) faults of different type: fixed value, gain factor, ...