Exploració per tema "Cluster analysis"

Ara es mostren els items 41-60 de 114

    • Dimensionality reduction for clustering with deep neural networks 

      Fernández Felguera, Agustin (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2020-09)
      Treball Final de Grau
      Accés obert
      [eng] Nowadays, high dimensional data is ubiquitous: you can think for example in images, videos or texts. Unfortunately, this property can harm seriously the performance of some algorithms. In this project, I analyse how ...

    • Discovering hidden pathways in bioinformatics 

      Lisboa, Paulo J.G.; Jarman, Ian H.; Etchells, Terence A.; Chambers, Simon J.; Bacciu, Davide; Whittaker, Joe; Garibaldi, Jon M.; Ortega Martorell, Sandra; Vellido Alcacena, Alfredo; Ellis, Ian O. (Springer, 2012)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Does training affect match performance? A study using data mining and tracking devices 

      Fernández, Javier; Medina Leal, Daniel; Gómez, Antonio; Arias Vicente, Marta; Gavaldà Mestre, Ricard (2016)
      Comunicació de congrés
      Accés obert
      FIFA has recently allowed the use of electronic performance and tracking systems (EPTS) in professional football competition, providing teams with novel and more accurate data. Physical performance has not yet taken much ...

    • Evaluación de patrones en sectores empresariales con técnicas estadísticas 

      Gago Muñoz, Iker (Universitat Politècnica de Catalunya, 2023-10-25)
      Treball Final de Grau
      Accés obert
      El principal objetivo de mi TFG es el estudio e investigación de posibles patrones de compra en el mercado textil, para reducir el consumo innecesario y optimice los pedidos de compra de nuestro cliente en varias tiendas ...

    • Evaluating drape shape in woven fabrics 

      Carrera Gallissà, Enric; Capdevila Juan, Francisco Javier; Valldeperas Morell, Josep (2017-01-09)
      Article
      Accés obert
      A search of the scientific literature for the period 1950–2013 retrieved 36 different drape indicators. Despite the large number of indicators currently available, the drape ratio (%DR) continues to be the most widely used, ...

    • Extracting cell patterns from high-dimensional radio network performance datasets using self-organizing maps and K-means clustering 

      Wang, Shaoxuan; Ferrús Ferré, Ramón Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2021-03-12)
      Article
      Accés obert
      Mobile Radio Networks produces many of Operations, Administration, and Maintenance (OAM) data used by operators for network operational assurance. These data include multiple and diverse performance measurements and ...

    • Finite mixture biclustering of discrete type multivariate data 

      Fernández Martínez, Daniel; Arnold, Richard; Pledger, Shirley; Liu, Ivy; Costilla, Roy (2018-05-15)
      Article
      Accés obert
      Many of the methods which deal with clustering in matrices of data are based on mathematical techniques such as distance-based algorithms or matrix decomposition and eigenvalues. In general, it is not possible to use ...

    • Fog - Applying blockchain to secure a distributed set of clusters 

      Marcer Albareda, Pau (Universitat Politècnica de Catalunya, 2019-07-02)
      Projecte Final de Màster Oficial
      Accés obert
      5G has already been presented and shown in major congresses, thus it’s just a matter of time that this technology comes to the enterprise and public usages. Therefore, we can affirm that we are moving towards a world where ...

    • Formas urbanas para la interacción social en la metrópolis de la movilidad: Madrid 

      Carpio-Pinedo, José (DUOT, UPC, 2020-09-28)
      Text en actes de congrés
      Accés obert
      La ciudad ha sido definida como el espacio donde ocurren gran cantidad y heterogeneidad de interacciones sociales. No obstante, es preciso hacer esa definición operativa, evaluando las diferentes formas urbanas como ...

    • Fraud detection in the purchasing process through unsupervised machine learning techniques 

      Bernal Cabrera, Andrea Michelle (Universitat Politècnica de Catalunya, 2023-01)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Applus+
      Las empresas pierden millones de euros al año por casos de fraude financiero y han utilizado aplicaciones de detección de fraude basadas en reglas, que no suelen ser suficientemente precisas. En el proceso de compras, la ...

    • Generalització de mètodes de density-based clustering a dades mixtes 

      Mollá Santiago, Sheila (Universitat Politècnica de Catalunya, 2014-06-10)
      Projecte/Treball Final de Carrera
      Accés obert
      El objetivo del proyecto es diseñar, implementar, integrar a KLASS y aplicar métodos de clustering basado en densidades y utilizar datos reales para su estudio. La particularidad que se propone es que se puedan utilizar ...

    • GEVA: geometric variability-based approaches for identifying patterns in data 

      Irigoien, I.; Arenas, Concepción; Fernández Aréizaga, Elena; Mestres, Francisco (2009-10-15)
      Article
      Accés restringit per política de l'editorial
      This paper, arising from population studies, develops clustering algorithms for identifying patterns in data. Based on the concept of geometric variability, we have developed one polythetic-divisive and three agglomerative ...

    • Global optimality in k-means clustering 

      Tîrnauca, Cristina; Gómez Pérez, Domingo; Balcázar Navarro, José Luis; Montaña Arnaiz, José Luis (2018-05-01)
      Article
      Accés obert
      We study the problem of finding an optimum clustering, a problem known to be NP-hard. Existing literature contains algorithms running in time proportional to the number of points raised to a power that depends on the ...

    • Granular flow characterisation towards an enhanced bulk feeder selection 

      Torres Serra, Joel (Universitat Politècnica de Catalunya, 2021-02-26)
      Tesi
      Accés obert
      In the packaging industry, a wide range of powders and bulk solids are handled in bagging equipment using different bulk feeding techniques. Quality of the packaging is critically affected by feeder performance, which is ...

    • Herramientas metodológicas para benchmarking en medicina basada en el valor: arquetipos y clasificación de pacientes 

      Otamendi Garitano, Maialen (Universitat Politècnica de Catalunya, 2023-05)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Biosistemak - Instituto de Investigación en Servicios de Salud

    • Hierarchical Portfolio Optimization 

      De Lio Pérego, Francisco (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2021-01)
      Treball Final de Grau
      Accés obert
      The field of Portfolio Optimization has historically had a very hard time as the Mathematical Models at its availability are based on certain assumptions one can not afford to make in the financial markets, making naive ...

    • Hunting for open clusters in Gaia EDR3: 628 new open clusters found with OCfinder 

      Castro Ginard, Alfred; Jordi Nebot, Carme; Luri Carrascoso, Xavier; Cantat Gaudin, Tristan; Carrasco Martínez, Josep Manel; Casamiquela Floriach, Laia; Anders, Friedrich; Balaguer Núñez, Lola; Badia Sala, Rosa Maria (EDP Sciences, 2022-05)
      Article
      Accés obert
      Context. The improvements in the precision of the published data in Gaia EDR3 with respect to Gaia DR2, particularly for parallaxes and proper motions, offer the opportunity to increase the number of known open clusters ...

    • Identification of phytoplankton pigment assemblages using derivative spectroscopy of hyperspectral remote-sensing reflectances 

      Torrecilla Ribalta, Elena; Piera Fernández, Jaume; Stramski, D.; Reynolds, R.; Millán-Nuñez, E. (SARTI (Technological Development Centre of Remote Acquisition and Data processing Systems), 2010-04-26)
      Article
      Accés obert
      One of the major challenges of ocean color research is distinguishing phytoplankton groups from in situ, airborne and satellite measurements to better understand diversity of phytoplankton and some involved biochemical ...

    • Implementación del análisis de trayectorias en datos de procesos discretos en KLASS 

      Calderón Valdiviezo, Ricardo Gregorio (Universitat Politècnica de Catalunya, 2019-10)
      Projecte Final de Màster Oficial
      Accés obert
      Ésta tésis de máster está enfocada en el análisis de trayectorias de procesos discretos , implementando un diagrama que permita representar de forma visual el comportamiento de un trayecto generado por la clasificación ...

    • Improving i-Vector and PLDA based speaker clustering with long-term features 

      Woubie, Abraham; Luque, Jordi; Hernando Pericás, Francisco Javier (International Speech Communication Association (ISCA), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      i-vector modeling techniques have been successfully used for speaker clustering task recently. In this work, we propose the extraction of i-vectors from short-and long-term speech features, and the fusion of their PLDA ...