Browsing by Author "Pledger, Shirley"

Now showing items 1-4 of 4

    • Categorising count data into ordinal responses with application to ecological communities 

      Fernández Martínez, Daniel; Pledger, Shirley (2016-06)
      Article
      Open Access
      Count data sets may involve overdispersion from a set of species and underdispersion from another set which would require fitting different models (e.g. a negative binomial model for the overdispersed set and a binomial ...

    • Finite mixture biclustering of discrete type multivariate data 

      Fernández Martínez, Daniel; Arnold, Richard; Pledger, Shirley; Liu, Ivy; Costilla, Roy (2018-05-15)
      Article
      Open Access
      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 ...

    • Introducing spaced mosaic plots 

      Fernández Martínez, Daniel; Arnold, Richard; Pledger, Shirley (2014-09-01)
      External research report
      Open Access
      Recent research has developed a group of likelihood-based finite mixture mod- els for a data matrix with ordinal data, establishing likelihood-based multivari- ate methods which applies fuzzy clustering via finite mixtures ...

    • Mixture-based clustering for the ordered stereotype model 

      Fernández Martínez, Daniel; Arnold, Richard; Pledger, Shirley (2016-01)
      Article
      Open Access
      Many of the methods which deal with the reduction of dimensionality in matrices of data are based on mathematical techniques such as distance-based algorithms or matrix decomposition and eigenvalues. Recently a group of ...