Programación del Seminario: Año 2021
- Jueves, 1 de julio de 2021. Hora: 12:30
Jordi Prats y Francisco Mañez. Servicio de bibliotecas y Servicio de Diseño y Desarrollo de Soluciones TIC, UPC
APRÈN. El portal de Producción Docente del profesorado de la UPC
- Viernes, 26 de febrero de 2021. Hora: 12:00
Juan José Egozcue. Emeritus Professor at the UPC
From the Nightingale chart to compositional biplots
APRÈN. El Portal de la Producción Docente del Profesorado de la UPC
CONFERENCIANTES: Jordi Prats y Francisco Mañez
IDIOMA: catalán
LUGAR: online
FECHA: Jueves, 1 de julio de 2021. Hora: 12:30
RESUMEN: En esta sesión conoceremos el portal APRÈN.
APRÈN es el portal que facilita el acceso a los contenidos que elabora el profesorado de la UPC como herramienta de apoyo de su actividad docente. Se nutre de los contenidos docentes que el profesorado ha incorporado en UPCommons y Zonavídeo, los portales de conocimiento abierto y de audiovisuales de la UPC. Con APRÈN, la UPC pretende mejorar la visibilidad y el impacto de la producción docente el profesorado de la UPC, favoreciendo su consulta desde una plataforma agregada que unifica su acceso. Así se da valor a la producción docente del profesorado, se fomenta la publicación en acceso abierto de estos contenidos, se identifican unívocamente los autores, y se promueve el uso de UPCommons como repositorio institucional.
Puede encontrarse más información sobre el portal en https://apren.upc.edu/es/about y accedir a él en https://apren.upc.edu/es.
From the Nightingale chart to compositional biplots
CONFERENCIANTE: Juan José Egozcue
IDIOMA: español
LUGAR: Online. Inscripción como muy tarde el 24 de febrero.
FECHA: Viernes, 26 de febrero de 2021. Hora: 12:00
RESUMEN: Among the remarkable merits of Florence Nightingale (1820--1910) the introduction of her chart presenting casualty data of Crimea War (1854-1856) is notorious. Her intention was to show to politicians and public in general that most deaths were avoidable taking measures of hygiene and care, in front of deaths caused by war wounds or other causes. Remarkably, the chart---that she called coxcomb and is nowadays known as polar area diagram---takes into account two important points in any statistical research: The research question and the characteristics of the available data. The data presentation on a polar plot accounts for seasonality; although major attention is paid to avoidable deaths, they are always compared to other causes of death, thus inviting to a multivariate analysis, where both proportions of types of deaths and their total are considered. This suggests a discussion on the sample space of the data. Available log-ratio approaches for the analysis of compositional data allow an alternative presentation emphasising the ratios between the different components, but not forgetting the total number of casualties. The compositional biplot including the total of the components is, maybe, the richest representation in the context of compositional data analysis.
SOBRE LOS AUTORES:
Juan Jose Egozcue: He studied Physics, at the University of Barcelona(Spain). He obtained his PhD in 1982. In 1978 he got lecturer in the Civil Engineering School (Universitat Politècnica de Catalunya, UPC, Barcelona, Spain), teaching subjects on Applied Mathematics and Statistics. Full Professor in 1989, at the UPC. Present main research activity: Bayesian methods for natural hazard assessment; and analysis of compositional data, with special emphasis in the geometry of the sample space. After retirement in 2016, he is Emeritus Professor at the UPC and President of the CoDa-Association.
Vera Pawlowsky-Glahn: She studied Mathematics at the University of Barcelona (Spain) and received her PhD from the Free University Berlin (Germany) in 1986. Back to Spain, she was professor at UPC in Barcelona and later professor of Statistics with the University of Girona. Since 1982 her main research field is the statistical analysis of compositional data, with special emphasis in the algebraic geometric structure of the sample space. She has published numerous articles, proceedings and books on this topic. She was President of IAMG 2008-2012 and President of the CoDa-Association 2015-2017. She is since November 1, 2018 Emeritus Professor at the University of Girona, Spain.
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