We propose a new and flexible simulation method for non-normal data with user-specified marginal distributions, covariance matrix and certain bivariate dependencies. The VITA (VIne To Anything) method is based on regular vines and generalizes the NORTA (NORmal To Anything) method. Fundamental theoretical properties of the VITA method are deduced. Two illustrations demonstrate the flexibility and usefulness of VITA in the context of structural equation models. R code for the implementation is provided.
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http://dx.doi.org/10.1007/s11336-017-9569-6 | DOI Listing |
J Palliat Med
January 2025
Department of Community and Allied Health, La Trobe Rural Health School, La Trobe University, Bendigo, Australia.
Palliative care (PC) in rural aged care facilities faces significant challenges, including late referrals and insufficient staff training, leading to a risk of suboptimal end-of-life care. The aim of the project was to develop and implement an evidence-based Palliative Care Assessment Toolkit (PCAT) to improve PC in rural aged care facilities and evaluate its impact on care delivery and staff practices. The study employed a mixed-methods design across three phases: codesign of the toolkit, implementation, and evaluation (using pre- and post-data).
View Article and Find Full Text PDFMicroorganisms
February 2024
Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile.
Grapevine trunk diseases (GTDs) attack the vine's wood, devastating vineyards worldwide. Chile is the world's fourth-largest wine exporter, and Cabernet Sauvignon is one of the most economically important red wine varieties. Botryosphaeria dieback is an important GTD, and is one of the main pathogenic species.
View Article and Find Full Text PDFPsychooncology
January 2024
Olivia Newton-John Cancer Wellness and Research Centre, Austin Health, Melbourne, Victoria, Australia.
Sci Data
May 2023
Delft University of Technology, Faculty of Civil Engineering and Geosciences, Delft, 2628CN, The Netherlands.
Vine copulas have become the standard tool for modelling complex probabilistic dependence. It has been shown that the number of regular vines grows extremely quickly with the number of nodes. Chimera is the first attempt to map the vast space of regular vines.
View Article and Find Full Text PDFSuperpixel is the over-segmentation region of an image, whose basic units "pixels" have similar properties. Although many popular seeds-based algorithms have been proposed to improve the segmentation quality of superpixels, they still suffer from the seeds initialization problem and the pixel assignment problem. In this paper, we propose Vine Spread for Superpixel Segmentation (VSSS) to form superpixel with high quality.
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