Scientific Program


Monday will be devoted to an introductory course about theoretical and practical aspects of the statistical analysis of compositional data. The workshop will run from Tuesday to Friday and will feature a number of distinguished keynote speakers, invited and contributed sessions and poster discussions. There will be no parallel sessions.




Daily schedules 

Tuesday 28.6 Session/Presentation Author(s)/Presenting author
Session 0 Opening Lecture - Chair: J.J. Egozcue  
9:00-10:00 Analysis of multi-factorial compositional data – what we already know and where we are heading Facevicova
Session 1 Social Sciences I - Chair: A. Ruiz-Gazen  
10:00-10:20 A compositional approach to the development of personas for the study of digital mobility Ortego, Wybraniec, Roca
10:20-10:40 Capital flows in integrated capital markets: the MILA case Vega Baquero, Santolino
10:40-11:00 Economic Indicators: Analysis from a Compositional Data Analysis Approach Jarauta-Bragulat, Hervada-Sala, Gibergans-Báguena, Egozcue
11:00-11:30 Coffee-break  
Session 2 Distributions, Variable selection, Dimension reduction - Chair: J. Palarea-Albaladejo  
11:30-11:50 A novel probability distribution for zero-laden compositional data Gordon, Loaiza-Ganem, Cunningham
11:50-12:10 Spline representation for bivariate densities Machalová, Hron
12:10-12:30 The t distribution in the simplex Monti, Mateu-Figueras
12:30-12:50 Forward selection with orthogonal pairwise logratios in regression with compositional covariates Jaskova, Templ, Hron
12:50-13:10 Analysing high-dimensional compositional data using PLS-based principal balances Nesrstova, Wilms, Hron, Martín-Fernández, Filzmoser, Palarea-Albaladejo
13:10-14:30 Lunch-break  
Session 3 Health Sciences and Microbiology - Chair: J. Graffelman  
14:30-15:00 Longitudinal compositional data analysis applied to accelerometry data over childhood and adolescence Chynoweth, Hosking, Streeter, Pinkney, Creanor
15:00-15:30 Antimicrobial Resistance and sustainability development goals Ghith
15:30-16:00 aIc: am I compositional? A shiny app for high throughput data validation Gloor
16:00-16:30 In-detail evaluation of association measures on single cell gene expression data Jin, Molina, Erb, Notredame
CANCELLED Leukocytes formula composition as a predictor of severe disease or death in COVID-19 infected patients Enciso-Olivera, Rodriguez-Romero, Mejía, Velandia-Forero
16:30-17:00 Coffee-break  
17:00-19:00 Session 4: Round Table: 40 years of Aitchison's seminal paper  - Chair: G. Coenders  
19:15-20:15 Concert  


Wednesday 29.6 Session/Presentation Author(s)/Presenting author
Session 5 Methods I - Chair: M.I. Ortego  
9:00-9:20 Using weighted alternating least squares for the analysis of compositional data Graffelman, Liang
9:20-9:40 Detecting outliers in compositional data using ICS Ruiz-Gazen, Thomas-Agnan, Laurent, Mondon
9:40-10:00 An overview of classification methods for functional distributional data Pavlu, Hron, Menafoglio, Bongiorno, Filzmoser
10:00-10:20 Limitations of logratio principal component analysis for uncovering natural laws in compositional data Liang, Graffelman
10:20-10:40 The thousand project problem: a self-evaluation alternative Egozcue, Pawlowsky-Glahn
10:40-11:00 Interpretation of a compositional regression coefficient by the nearest balance vector Odintsova, Klimenko, Tyakht
11:00-11:30 Coffee-break  
Session 6 Environmental Sciences - Chair: R. Tolosana-Delgado  
11:30-11:55 Soil pollution: a compositional baseline approach in Langreo, Spain. Albuquerque, Boente, Gallego, Pawlowsky-Glahn, Egozcue
CANCELLED Measurement of Inequalities in the provision of Water and Sanitation Services  Pérez-Foguet, Quispe-Coica
11:55-12:20 Density Distributions of Principal Balances to Unveil River System Resilience to Change Gozzi, Buccianti
12:20-12:45 Towards consistent interpretations of coal composition data on whole-coal versus ash  Xu, Wang, Engle, Li, Zhu, Wang
12:45-13:10 The geoforensic passport of gold: a case study on compositional data Beck, Kiener, Maignan
13:10-14:30 Lunch-break  
14:30-17:40 Excursion Halle de la Machine  
20:00-23:00 Gala Dinner Péniche Samsara  


Thursday 30.6 Session/Presentation Author(s)/Presenting author
Session 7 Social Sciences II - Chair: K. Facevicova  
9:40-10:00 Applying compositional data to linguistics: A multi-factorial analysis of Word Length Daunis-i-Estadella, Nir
10:00-10:20 A bibliometric overview of Aitchison’s seminal 1986 book “The Statistical Analysis of Compositional Data” Navarro, Linares-Mustaros, Mulet-Forteza
10:20-10:40 Projected image of peer-to-peer accommodation platforms in Instagram Medina-Hernandez, Ferrer-Rosell, Marine-Roig
10:40-11:00 An application of CoDa for hotel consumption pattern analysis Pons-Vives, Horrach-Rosselló, Martínez-García, Mulet-Forteza
11:00-11:30 Coffee-break  
11:00-13:10 Poster Session - Chair: J.A. Martín-Fernández  
  Impact of COVID19 on the Spanish wine sector using compositional data Arimany-Serrat, Farreras-Noguer, Coenders
  Multivariate Bayes Spaces and Compositions Boogaart, Tolosana-Delgado
  Clustering count data using compositional methods Comas-Cufí, Martín-Fernández, Mateu-Figueras, Palarea-Albaladejo
  Comparing variable selection methods in high-dimensional compositional data Daunis-i-Estadella, Mateu-Figueras, Nesrstova, Hron, Martín-Fernández
  Preliminary findings in Ward R-mode clustering method for Compositional Data Di Donato, Pawlowsky-Glahn, Egozcue, Martín-Fernández
  Shrinkage estimates of compositional covariance matrices Erb
  Understanding financial log-ratios Ferrer-Comalat, Molas-Colomer, Linares-Mustaros
  The Global Food System: A compositional-based model and a case study García-Martín, Jarauta-Bragulat
CANCELLED Fast log-ratio selection for high-dimensional compositional data Gordon-Rodriguez, Quinn, Cunningham
  How to avoid the problems associated with the analysis of classical financial ratios Linares-Mustaros, Molas-Colomer, Ferrer-Comalat
  lrSVD: compositional data imputation through singular value decomposition Martín-Fernández, Palarea-Albaladejo, Ruiz-Gazen, Thomas-Agnan
  Development of a fuzzy cluster analysis of the accounting area using R Molas-Colomer, Ferrer-Comalat, Linares-Mustaros
  Impact of growth strategies and hotel attributes on their performance Mulet-Forteza, Linares-Mustaros, Ferrer-Rosell
  Implementing weighting schemes for compositional data analysis Palarea-Albaladejo, Hron, Menafoglio, Filzmoser, Talska, Egozcue
  Notes on the space of parts and subcompositional coherence Pawlowsky-Glahn, Egozcue
  The uniform distribution on the simplex Saperas-Riera, Mateu-Figueras
  Study of the economic viability of rural tourism: Catalonia and Galicia Saus-Sala, Farreras-Noguer, Arimany-Serrat, Coenders
  Compositional data analysis of organizational culture and business-IT alignment Sieber, Boogaart
13:10-14:30 Lunch-break  
 Session 8 Methods II - Chair: G. Mateu-Figueras  
14:30-14:50 Three approaches to supervised learning for compositional data with pairwise logratios Coenders, Greenacre
14:50-15:10 Some thoughts on constrained convex optimization in the simplex Saperas-Riera, Martín-Fernández
15:10-15:30 Tucker4 model for compositions: Algorithm and Interpretation Simonacci, Trendafilov, Todorov, Gallo
15:30-15:50 Mapping spatio-compositional Data Laurent, Ruiz-Gazen, Thomas-Agnan
Session 9 Closing Lecture - Chair: J.J. Egozcue  
15:50-17:00 Geostatistics for compositional data: from spatial interpolation to high dimensional prediction Tolosana-Delgado, Boogaart
17:00-17:30 Coffee-break  
17:30-19:00 CoDa-Association Assembly & Closing Ceremony  



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