Browsing by Author "Greenacre, Michael"

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  • Greenacre, Michael; Torres, Anna (1999-12-01)
    Dual scaling of a subjects-by-objects table of dominance data (preferences, paired comparisons and successive categories data) has been contrasted with correspondence analysis, as if the two techniques were somehow different. ...
  • Greenacre, Michael (2011-04-01)
    Hierarchical clustering is a popular method for finding structure in multivariate data, resulting in a binary tree constructed on the particular objects of the study, usually sampling units. The user faces the decision ...
  • Palacios Fenech, Javier (Universitat Pompeu Fabra, 2011-10-07)
    Diffusion of 31 durable goods in 70 countries over a period of 32 years is analyzed using principal component analysis biplots. While marketers have focused on adoption of innovations, studying discontinuance provides an ...
  • Musciotto, Federico; Dobón Berenguer, Begoña, 1987-; Greenacre, Michael; Mira, Alex; Chaudhary, Nikhil; Salali, Gul Deniz; Gerbault, Pascale; Schlaepfer, Rodolph; Astete, Leonora H.; Ngales, Marilyn; Gomez-Gardenes, Jesus; Latora, Vito; Battiston, Federico; Bertranpetit, Jaume, 1952-; Vinicius, Lucio; Migliano, Andrea Bamberg (Cambridge University Press, 2023)
    Here we investigate the effects of extensive sociality and mobility on the oral microbiome of 138 Agta hunter–gatherers from the Philippines. Our comparisons of microbiome composition showed that the Agta are more similar ...
  • Greenacre, Michael (1996-12-01)
    The application of correspondence analysis to square asymmetric tables is often unsuccessful because of the strong role played by the diagonal entries of the matrix, obscuring the data off the diagonal. A simple modification ...
  • Greenacre, Michael (2001-03-01)
    We consider the joint visualization of two matrices which have common rows and columns, for example multivariate data observed at two time points or split accord-ing to a dichotomous variable. Methods of interest ...
  • Gori, Andrea; Orejas, Covadonga; Madurell, Teresa; Bramanti, Lorenzo; Martins, M.; Quintanilla, Elena; Martí Puig, Patricia; Lo Iacono, Claudio; Puig, Pere; Requena Moreno, Susana; Greenacre, Michael; Gili, Josep Maria (European Geosciences Union (EGU), 2013)
    Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine ...
  • Aitchison, John; Greenacre, Michael (2001-06-01)
    The singular value decomposition and its interpretation as a linear biplot has proved to be a powerful tool for analysing many forms of multivariate data. Here we adapt biplot methodology to the speciffic case of ...
  • Asan, Zerrin; Greenacre, Michael (2008-03-01)
    A biplot, which is the multivariate generalization of the two-variable scatterplot, can be used to visualize the results of many multivariate techniques, especially those that are based on the singular value decomposition. ...
  • Aschan, Michaela Maria; Fossheim, Maria; Greenacre, Michael; Primicerio, Raul (Public Library of Science (PLoS), 2013)
    Change in oceanographic conditions causes structural alterations in marine fish communities, but this effect may go undetected as most monitoring programs until recently mainly have focused on oceanography and commercial ...
  • Orlova, Emma L.; Dolgov, Andrey V.; Renaud, Paul E.; Greenacre, Michael; Halsband, Claudia; Ivshin, Victor A. (Frontiers, 2015)
    Euphausiids play an important role in transferring energy from ephemeral primary producers to fish, seabirds, and marine mammals in the Barents Sea ecosystem. Climatic impacts have been suggested to occur at all levels of ...
  • Greenacre, Michael; Martínez-Álvaro, Marina; Blasco, Agustín (Frontiers, 2021)
    Microbiome and omics datasets are, by their intrinsic biological nature, of high dimensionality, characterized by counts of large numbers of components (microbial genes, operational taxonomic units, RNA transcripts, etc.). ...
  • Martínez-Álvaro, Marina; Zubiri-Gaitán, Agostina; Hernández, Pilar; Greenacre, Michael; Ferrer, Alberto; Blasco, Agustín (Nature Research, 2021)
    Our study provides an exhaustive comparison of the microbiome core functionalities (captured by 3,936 microbial gene abundances) between hosts with divergent genotypes for intramuscular lipid deposition. After 10 generations ...
  • Greenacre, Michael; Nenadic, Oleg (2005-09-01)
    The generalization of simple correspondence analysis, for two categorical variables, to multiple correspondence analysis where they may be three or more variables, is not straighforward, both from a mathematical and ...
  • Greenacre, Michael (2009-07-01)
  • Greenacre, Michael (2008-09-01)
  • Greenacre, Michael (Elsevier, 2002)
    This report gives a comprehensive explanation of the multivariate technique called correspondence analysis, applied in the context of a large survey of a nation's state of health, in this case the Spanish National Health ...
  • Greenacre, Michael; Clavel, José G. (1998-06-01)
    The case of two transition tables is considered, that is two square asymmetric matrices of frequencies where the rows and columns of the matrices are the same objects observed at three different time points. Different ways ...
  • Greenacre, Michael (2017-02-01)
    The reporting and graphing of ecological data and statistical results often leave a lot to be desired. One reason can be a misunderstanding or confusion of some basic concepts in statistics such as standard deviation, ...

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