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Parametric Compositional Data Types [PDF]

Electronic Proceedings in Theoretical Computer Science, 2012
In previous work we have illustrated the benefits that compositional data types (CDTs) offer for implementing languages and in general for dealing with abstract syntax trees (ASTs).
Tom Hvitved, Patrick Bahr
doaj   +5 more sources

Compositional Data Analysis of Microbiome and Any-Omics Datasets: A Validation of the Additive Logratio Transformation

Frontiers in Microbiology, 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.).
Michael Greenacre, Marina Martínez-Álvaro, Agustín Blasco   +2 more
doaj   +1 more source

Characterization of the Airborne Microbiome in Different Indoor and Outdoor Locations of a University Building Using an Innovative Compositional Data Analysis Approach

Atmosphere, 2023
In this work, we investigated the structure of the airborne bacterial community obtained by 16S rRNA gene sequencing performed on aerosol samples from different indoor and outdoor locations. The 48-h aerosol samples were collected in two laboratories, in
Mattia Fragola, Salvatore Romano, Dalila Peccarrisi, Adelfia Talà, Pietro Alifano, Alessandro Buccolieri, Gianluca Quarta, Lucio Calcagnile   +7 more
doaj   +1 more source

Individualized Prediction of Blood Glucose Outcomes Using Compositional Data Analysis

Mathematics, 2023
This paper presents an individualized multiple linear regression model based on compositional data where we predict the mean and coefficient of variation of blood glucose in individuals with type 1 diabetes for the long-term (2 and 4 h).
Alvis Cabrera, Ernesto Estremera, Aleix Beneyto, Lyvia Biagi, Iván Contreras, Josep Antoni Martín-Fernández, Josep Vehí   +6 more
doaj   +1 more source

Analysis of the 24-h activity cycle: An illustration examining the association with cognitive function in the Adult Changes in Thought study

Frontiers in Psychology, 2023
The 24-h activity cycle (24HAC) is a new paradigm for studying activity behaviors in relation to health outcomes. This approach inherently captures the interrelatedness of the daily time spent in physical activity (PA), sedentary behavior (SB), and sleep.
Yinxiang Wu, Yinxiang Wu, Dori E. Rosenberg, Mikael Anne Greenwood-Hickman, Susan M. McCurry, Cécile Proust-Lima, Jennifer C. Nelson, Paul K. Crane, Andrea Z. LaCroix, Eric B. Larson, Pamela A. Shaw   +10 more
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A Simultaneous Feature Selection and Compositional Association Test for Detecting Sparse Associations in High-Dimensional Metagenomic Data

Frontiers in Microbiology, 2022
Numerous metagenomic studies aim to discover associations between the microbial composition of an environment (e.g., gut, skin, oral) and a phenotype of interest.
Andrew L. Hinton, Andrew L. Hinton, Peter J. Mucha, Peter J. Mucha, Peter J. Mucha   +4 more
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Validation of a Probabilistic Prediction Model for Patients with Type 1 Diabetes Using Compositional Data Analysis

Mathematics, 2023
Glycemia assessment in people with type 1 diabetes (T1D) has focused on the time spent in different glucose ranges. As this time reflects the relative contributions to the finite duration of a day, it should be treated as compositional data (CoDa) that ...
Alvis Cabrera, Lyvia Biagi, Aleix Beneyto, Ernesto Estremera, Iván Contreras, Marga Giménez, Ignacio Conget, Jorge Bondia, Josep Antoni Martín-Fernández, Josep Vehí   +9 more
doaj   +1 more source

The Gut Microbiota of Healthy Aged Chinese Is Similar to That of the Healthy Young

mSphere, 2017
The microbiota of the aged is variously described as being more or less diverse than that of younger cohorts, but the comparison groups used and the definitions of the aged population differ between experiments.
Gaorui Bian, Gregory B. Gloor, Aihua Gong, Changsheng Jia, Wei Zhang, Jun Hu, Hong Zhang, Yumei Zhang, Zhenqing Zhou, Jiangao Zhang, Jeremy P. Burton, Gregor Reid, Yongliang Xiao, Qiang Zeng, Kaiping Yang, Jiangang Li   +15 more
doaj   +1 more source

Balances: a New Perspective for Microbiome Analysis

mSystems, 2018
High-throughput sequencing technologies have revolutionized microbiome research by allowing the relative quantification of microbiome composition and function in different environments. In this work we focus on the identification of microbial signatures,
J. Rivera-Pinto, J. J. Egozcue, V. Pawlowsky-Glahn, R. Paredes, M. Noguera-Julian, M. L. Calle   +5 more
doaj   +3 more sources

Exploring high-resolution targeting till geochemical data in central Lapland, Finland [PDF]

Bulletin of the Geological Society of Finland
The targeting till geochemical dataset of Finland was collected during the 1970s and early 1980s by the Geological Survey of Finland (GTK). The dataset covers central Finnish Lapland and some areas in Ostrobothnia and eastern Finland.
Charmee Kalubowila, Pertti Sarala, Solveig Pospiech, Peter Filzmoser   +3 more
doaj   +1 more source