Results 111 to 120 of about 5,782,543 (332)

Manipulating measurement scales in medical statistical analysis and data mining: A review of methodologies

open access: yesJournal of Research in Medical Sciences, 2014
Background: selecting the correct statistical test and data mining method depends highly on the measurement scale of data, type of variables, and purpose of the analysis.
Hamid Reza Marateb   +3 more
doaj  

Farmers' Financial Literacy—Scale Development and Linkages to Accounting Practices and Financial Outcomes

open access: yesAgribusiness, EarlyView.
ABSTRACT This study investigates the financial literacy (FL) of Swedish farmers, its linkages to farmer characteristics, management accounting practices and farm outcomes by surveying Swedish Farm Accountancy Data Network farmers. Using item response theory, we expand the existing FL measurement specifically to the farming context, assess measurement ...
Uliana Gottlieb, Helena Hansson
wiley   +1 more source

Factor Analysis of Ordinal Items: Old Questions, Modern Solutions?

open access: yesStats
Factor analysis, a staple of correlational psychology, faces challenges with ordinal variables like Likert scales. The validity of traditional methods, particularly maximum likelihood (ML), is debated.
João Marôco
doaj   +1 more source

Penalized EM algorithm and copula skeptic graphical models for inferring networks for mixed variables

open access: yes, 2014
In this article, we consider the problem of reconstructing networks for continuous, binary, count and discrete ordinal variables by estimating sparse precision matrix in Gaussian copula graphical models.
Abegaz, Fentaw, Wit, Ernst
core   +1 more source

Partitioned conditional generalized linear models for categorical data [PDF]

open access: yes, 2014
In categorical data analysis, several regression models have been proposed for hierarchically-structured response variables, e.g. the nested logit model. But they have been formally defined for only two or three levels in the hierarchy.
Guédon, Yann   +2 more
core   +4 more sources

Ordinal Variable Selection in Decision Trees [PDF]

open access: yesKorean Journal of Applied Statistics, 2006
The most important component in decision tree algorithm is the rule for split variable selection. Many earlier algorithms such as CART and C4.5 use greedy search algorithm for variable selection. Recently, many methods were developed to cope with the weakness of greedy search algorithm. Most algorithms have different selection criteria depending on the
openaire   +1 more source

Climate Change Mitigation in the Dairy Sector: Uncovering Heterogeneity Through Eco‐Efficiency Clubs

open access: yesAgribusiness, EarlyView.
ABSTRACT Combining climate change goals with economic targets is crucial for the dairy sector, which is a significant contributor to agricultural greenhouse gas (GHG) emissions worldwide. In this paper, we assess economic and climate change implications of dairy production with panel data of Irish dairy farms from 2013 to 2021.
Doris Läpple   +2 more
wiley   +1 more source

An approach to the integral optimization of investment portfolios

open access: yesJournal of Open Innovation: Technology, Market and Complexity
A comprehensive approach to the optimization of financial portfolios is provided by the Integral Analysis Method (IAM), which comprises four steps: The description of the problem is followed by three mathematical steps, namely, cardinal analysis, ordinal
Rafael Guillermo García-Cáceres   +4 more
doaj   +1 more source

Ordinal Comparison of Multidimensional Deprivation: theory and application [PDF]

open access: yes
This paper develops an ordinal method of comparison of multidimensional inequality. In our model, population distribution g is more unequal than f when the distributions have common median and can be obtained from f by one or more shifts in population ...
Christoffer Sonne-Schmidt   +2 more
core  

Dimensionality reduction methods for contingency tables with ordinal variables [PDF]

open access: yes, 2016
Correspondence analysis is a widely used tool for obtaining a graphical representation of the interdependence between the rows and columns of a contingency table, by using a dimensionality reduction of the spaces. The maximum information regarding the
Amenta, Pietro   +2 more
core  

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