LAUSR

Log-ratio transformations for dietary compositions: numerical and conceptual questions

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0 Published in 2021 at "Journal of Nutritional Science"

DOI: 10.1017/jns.2021.93

Abstract: Abstract When evaluating the impact of macronutrient intakes on health outcomes, researchers in nutritional epidemiology are mostly interested in two types of information: the relative importance of the individual macronutrients and the absolute effect of… read more here.

Keywords: log ratio; ratio transformations; numerical conceptual; transformations dietary ... See more keywords

Enhanced log ratio calibration methods for stratified variance estimation in survey sampling

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0 Published in 2025 at "Scientific Reports"

DOI: 10.1038/s41598-025-30096-0

Abstract: Survey sampling is a widely used technique for collecting data from a subset of a bigger population. Among its methods, stratified random sampling is particularly valuable for yielding precise inferences about distinct subgroups within a… read more here.

Keywords: variance; population; methods stratified; survey sampling ... See more keywords

Behavior of the average-log-ratio ALR gear-damage detection algorithm in cases of a single damage form

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0 Published in 2020 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"

DOI: 10.1177/0954406220971668

Abstract: A mathematical model of static-transmission-error frequency-domain contributions caused by a single generic form of gear-tooth damage is used to explain observed behavior of the average-log-ratio (ALR) gear-damage detection algorithm applied to a case of tooth-bending-fatigue… read more here.

Keywords: detection; gear damage; behavior average; log ratio ... See more keywords

Mapping Soil Particle-Size Fractions Using Additive Log-Ratio (ALR) and Isometric Log-Ratio (ILR) Transformations and Proximally Sensed Ancillary Data

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0 Published in 2018 at "Clays and Clay Minerals"

DOI: 10.1346/ccmn.2017.064074

Abstract: Together, the three particle size fractions (PSFs) of clay, silt, and sand are the most fundamental soil properties because the relative abundance influences the physical, chemical, and biological activities in soil. Unfortunately, determining PSFs requires… read more here.

Keywords: ancillary data; soil; alr; log ratio ... See more keywords

A New Discovery of Cu Mineralization in the North Qaidam, Tibet via Log-Ratio, Robust Factor Analysis, and Spectrum–Area Modeling

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0 Published in 2024 at "Applied Sciences"

DOI: 10.3390/app14062597

Abstract: The Qinghai–Tibet Plateau, abundant in mineral resources, is a treasure trove for geological explorers. However, exploration has been hindered by the presence of dense vegetation, weathering layers, and desert cover, particularly in the North Qaidam… read more here.

Keywords: north qaidam; robust factor; area; mineralization ... See more keywords