COSDA-UPC - COmpositional and Spatial Data Analysis
Desenvolupament i aplicació de tècniques adequades pel tractament de de dades composicionals i espacials.
La particular naturalesa de les dades composicionals i espacials requereix mètodes i tècniques estadístiques específiques. En les línies de recerca teòriques es treballa des de la generalització de distribucions pròpies fins al desenvolupament de models lineals generalitzats i estructurals. Els balanços principals i els mètodes d’agrupació són eines específiques de reducció de la dimensió, les quals s'apliquen una vegada les dades han estat preprocessades amb tècniques com el tractament de valors en la frontera de l’espai mostral. Aquest conjunt de mètodes s'utilitzen en estudis en altres camps del coneixement, dels quals sorgeixen reptes que estimulen el progrés de les línies de recerca. Les activitats de recerca es completen amb accions per a la formació de nous investigadors, la transferència i la difusió; entre les quals en destaquem: el paquet estadístic propi CoDaPack, el curs CoDaCourse, el taller internacional CoDaWork, i el domini d’internet CoDaWeb.
Development and application of techniques for the analysis of compositional and spatial data.
Development and application of techniques for the analysis of compositional and spatial data.
Colecciones
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Articles de revista [18]
Envíos recientes
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El sistema alimentario global: II aproximación cuantitativa al espacio agroalimentario de la Europa mediterránea
(MINISTERIO DE AGRICULTURA, PESCA Y ALIMENTACION., 2018-03)
Artículo
Acceso abiertoEl presente trabajo constituye la segunda parte de “El Sistema Alimentario Global: I - Definición de un espacio” (2014). Los objetivos de esta segunda parte son: (1) ilustrar y desarrollar la aplicación del modelo formulado ... -
Multivariate hybrid modelling of future wave-storms at the northwestern Black Sea
(2018-02)
Artículo
Acceso abiertoThe characterization of future wave-storms and their relationship to large-scale climate can provide useful information for environmental or urban planning at coastal areas. A hybrid methodology (process-based and statistical) ... -
Multi-allelic exact tests for Hardy-Weinberg equilibrium that account for gender
(Wiley, 2018-01)
Artículo
Acceso abiertoStatistical tests for Hardy–Weinberg equilibrium are important elementary tools in genetic data analysis. X-chromosomal variants have long been tested by applying autosomal test procedures to females only, and gender is ... -
Microbiome datasets are compositional: and this is not optional
(2017-11)
Artículo
Acceso abiertoDatasets collected by high-throughput sequencing (HTS) of 16S rRNA gene amplimers, metagenomes or metatranscriptomes are commonplace and being used to study human disease states, ecological differences between sites, and ... -
A bayesian test for Hardy-Weinberg equilibrium of bi-allelic X-chromosomal markers
(2017-07)
Artículo
Acceso abiertoThe X chromosome is a relatively large chromosome, harboring a lot of genetic information. Much of the statistical analysis of X-chromosomal information is complicated by the fact that males only have one copy. Recently, ... -
Modified Kolmogorov-Smirnov test of goodness of fit
(2017)
Texto en actas de congreso
Acceso abiertoA modified version of the Kolmogorov-Smirnov (KS) test is presented as a tool to assess whether a specified, although arbitrary, probability model is unsuitable to describe the underlying distribution of a set of observations. ... -
A genome-wide study of Hardy–Weinberg equilibrium with next generation sequence data
(2017-04-03)
Artículo
Acceso abiertoStatistical tests for Hardy–Weinberg equilibrium have been an important tool for detecting genotyping errors in the past, and remain important in the quality control of next generation sequence data. In this paper, we ... -
Changes in the occurrence of extreme wave storms in the Catalan coast: a Bayesian approach
(Universitat de Barcelona. Edicions i Publicacions, 2016)
Comunicación de congreso
Acceso restringido por política de la editorial -
Graphics for relatedness research
(Wiley, 2017-04-03)
Artículo
Acceso abiertoStudies of relatedness have been crucial in molecular ecology over the last decades. Good evidence of this is the fact that studies of population structure, evolution of social behaviours, genetic diversity and quantitative ... -
Multivariate statistical modelling of future marine storms
(2017-04)
Artículo
Acceso restringido por política de la editorialExtreme events, such as wave-storms, need to be characterized for coastal infrastructure design purposes. Such description should contain information on both the univariate behaviour and the joint-dependence of storm-variables. ... -
Compositional data for global monitoring: the case of drinking water and sanitation
(2017-07)
Artículo
Acceso restringido por política de la editorialIntroduction At a global level, access to safe drinking water and sanitation has been monitored by the Joint Monitoring Programme (JMP) of WHO and UNICEF. The methods employed are based on analysis of data from household ... -
Relationship between the popularity of key words in the Google browser and the evolution of worldwide financial indices
(Springer, 2016)
Capítulo de libro
Acceso restringido por política de la editorialThe authoritative contributions gathered in this volume reflect the state of the art in compositional data analysis (CoDa). The respective chapters cover all aspects of CoDa, ranging from mathematical theory, statistical ...
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