Now showing items 21-40 of 92

    • Classical and robust imputation of missing values for compositional data using balances 

      Hron, K.; Templ, M.; Filzmoser, P. (CIMNE, 2011)
      Conference report
      Open Access
    • CoDaPack 2.0: a stand-alone, multi-platform compositional software 

      Comas, M.; Thió Fernández de Henestrosa, Santiago (CIMNE, 2011)
      Conference report
      Open Access
      Historically CoDaPack 3D has intended to be a software of Compositional Data with an easy and intuitive way of use. For this reason from the beginning it has been associated to Excel, a software known and used for many ...
    • Combining a machine learning and optimization for early pre-FEC BER degradation to meet committed QoS 

      Pérez Vela, Alba; Ruiz Ramírez, Marc; Cugini, Filippo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      Monitoring the physical layer is key to detect bit error rate (BER) degradation caused by failures and to identify the cause of the failure and localize the failed elements. Once the failure has been detected, actions can ...
    • Compositional analysis of correlation of weather parameters with russet of 'golden delicious' apples 

      Barceló Vidal, C.; Bonany, J.; Carbó, J. (CIMNE, 2011)
      Conference report
      Open Access
      The development of russet on 'Golden Delicious' apples is a problem of concern to growers of fresh market apples. Russeting is considered to be due to untimely divisions of cells in the epidermis of the fruit initiated ...
    • Compositional analysis of phosphorus pools in Canadian Mollisols 

      Abdi, D.; Ziadi, N.; Parent, L-É. (CIMNE, 2011)
      Conference report
      Open Access
      During cultivation, the internal phosphorus cycle of Mollisols (Chernozems) of the Canadian Prairies is perturbed by crop sequences including wheat phases, tillage practices, and regular applications of fertilizers. To ...
    • Compositional classes and diversity in archaeological ceramic studies 

      Buxeda i Garrigós, J. (CIMNE, 2011)
      Conference report
      Open Access
      Archaeological studies are based, at a large extent, on the study of the materials that form the different unearthed assemblages. Thus, ceramic assemblages are defined by their compositions, i.e. how many pots of different ...
    • Compositional data analysis as a potential tool to study the (paleo)ecology of calcareous nannoplankton from the central portuguese submarine canyons (W off Portugal) 

      Guerreiro, C.; Cachão, M.; Stigter, De; Oliveira, H.; Rodrigues, A. (CIMNE, 2011)
      Conference report
      Open Access
      Submarine canyons are deep and steep incisions on the continental margins. The physical forcing mechanisms linked with these marine systems, such as the enhancement of upwelling and bottom sediment resuspension, are ...
    • Compositional data analysis with Red-R 

      Parent, Serge-Etienne; Covington, Kyle R. (CIMNE, 2011)
      Conference report
      Open Access
      The compositional analyst must use a series of software to transform raw compositional data and run statistical analyses on them. Tools for compositional data analysis are available in R, an open source widely-used ...
    • Compositional data, bayesian inference and the modeling process 

      Bacon-Shone, J. (CIMNE, 2011)
      Conference report
      Open Access
      Statistical modeling in practice encompasses both the exploratory process, which is an inductive scientific approach and the confirmatory modeling process, which uses the deductive scientific approach. This paper will ...
    • Compositional loess modeling 

      Bergman, J.; Holmquist, B. (CIMNE, 2011)
      Conference report
      Open Access
      Cleveland (1979) is usually credited with the introduction of the locally weighted regression, Loess. The concept was further developed by Cleveland and Devlin (1988). The general idea is that for an arbitrary number of ...
    • Compositional meta-analysis of citrus varieties in the state of São Paulo, Brazil 

      Rozane, Danilo Eduardo; De Mattos Junior, Dirceu; Parent, Serge-Etienne; Natale, William; Parent, Leon Etienne (CIMNE, 2011)
      Conference report
      Open Access
      Brazil is the largest orange (Citrus sinensis) producer worldwide. The nutrient management of orange orchards is designed from experiments on a limited number of varieties. This knowledge is transferred to other varieties ...
    • Compositional meta-analysis of the nutrient profile of potato cultivars 

      Hernandes, Amanda; Parent, Serge-Etienne; Veillette, Jean-Pierre; Parent, Philippe; Leblanc, Michaël; Roy, Guy; Sylvestre, Philippe; Samson, Nicolas; Natale, William; Parent, Leon Etienne (CIMNE, 2011)
      Conference report
      Open Access
      While several potato (Solanum tuberosum L.) cultivars of different maturity groups (e.g. early, mid-season, late) are being selected each year as a result of successful breeding for disease resistance and market requirements, ...
    • Compositional random data: a routine for CoDaPack 

      Comas Cufí, Marc; Mateu Figueras, G.; Thió Fernández de Henestrosa, Santiago (CIMNE, 2011)
      Conference report
      Open Access
      Generation of random variables are needed in the simulations of many natural process. For some random variables, di erent methodologies are known, specially into euclidean spaces. In this paper a routine for dealing with ...
    • Compositions and fuzzy compositions in decision-making models 

      Talasova, J.; Pavlacka, O. (CIMNE, 2011)
      Conference report
      Open Access
      In decision-making models, the compositions (Aitchison, 1986) are employed in various forms. They can represent the normalized weights of criteria in multiple-criteria decision-making models, or the probabilities of ...
    • Constant-Time Sliding Window Framework with Reduced Memory Footprint and Efficient Bulk Evictions 

      Villalba, Álvaro; Berral García, Josep Lluís; Carrera, David (IEEE, 2019-03-01)
      Article
      Open Access
      The fast evolution of data analytics platforms has resulted in an increasing demand for real-time data stream processing. From Internet of Things applications to the monitoring of telemetry generated in large data centers, ...
    • Constant-time sliding window framework with reduced memory footprint and efficient bulk evictions 

      Villalba Navarro, Álvaro; Berral García, Josep Lluís; Carrera Pérez, David (2019-03)
      Article
      Open Access
      The fast evolution of data analytics platforms has resulted in an increasing demand for real-time data stream processing. From Internet of Things applications to the monitoring of telemetry generated in large data centers, ...
    • Could CODA methodology be useful in control chart techniques? 

      Vives Mestres, M.; Daunis i Estadella, J.; Martín Fernández, J.A. (CIMNE, 2011)
      Conference report
      Open Access
      On standard control charts, the hypothesis of normality is usually assumed without any additional veri cation. Nevertheless, in some cases this assumption is not accurate and might cause errors in process quality monitoring. ...
    • Data analytics in the 5G radio access network and its applicability to fixed wireless access 

      Sallent Roig, José Oriol; Pérez Romero, Jordi; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      This paper discusses the exploitation of data analytics for supporting the operation of Radio Resource Management (RRM) in the Next Generation Radio Access Network (NG-RAN), analysing the need for standardised and open ...
    • Data engineering for data science: two sides of the same coin 

      Romero Moral, Óscar; Wrembel, Robert (Springer, 2020)
      Conference report
      Open Access
      A de facto technological standard of data science is based on notebooks (e.g., Jupyter), which provide an integrated environment to execute data workflows in different languages. However, from a data engineering point of ...
    • Data pre-processing pipeline generation for AutoETL 

      Giovanelli, Joseph; Bilalli, Besim; Abelló Gamazo, Alberto (Elsevier, 2021-12-03)
      Article
      Restricted access - publisher's policy
      Data pre-processing plays a key role in a data analytics process (e.g., applying a classification algorithm on a predictive task). It encompasses a broad range of activities that span from correcting errors to selecting ...