SORT

SORT 6 records found  Search took 0.01 seconds. 
1.
24 p, 432.6 KB Evidence functions : a compositional approach to information / Egozcue, Juan-José (Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental) ; Pawlowsky-Glahn, Vera (Universitat de Girona. Departament d'Informàtica i Matemàtica Aplicada)
The discrete case of Bayes' formula is considered the paradigm of information acquisition. Prior and posterior probability functions, as well as likelihood functions, called evidence functions, are compositions following the Aitchison geometry of the simplex, and have thus vector character. [...]
2018 - 10.2436/20.8080.02.71
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 101-124 (Invited articles)  
2.
34 p, 520.2 KB A contingency table approach based on nearest neighbour relations for testing self and mixed correspondence / Ceyhan, Elvan (North Carolina State University. Department of Statistics)
Nearest neighbour methods are employed for drawing inferences about spatial patterns of points from two or more classes. We introduce a new pattern called correspondence which is motivated by (spatial) niche/habitat specificity and segregation, and define an associated contingency table called a correspondence contingency table, and examine the relation of correspondence with the motivating patterns (namely, segregation and niche specificity). [...]
2018 - 10.2436/20.8080.02.72
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 125-158 (Articles)  
3.
24 p, 517.9 KB Efficiency of propensity score adjustment and calibration on the estimation from non-probabilistic online surveys / Ferri-García, Ramón (Universidad de Granada. Departamento de Estadística) ; Rueda, Maria del Mar (Universidad de Granada. Departamento de Estadística)
One of the main sources of inaccuracy in modern survey techniques, such as online and smartphone surveys, is the absence of an adequate sampling frame that could provide a probabilistic sampling. This kind of data collection leads to the presence of high amounts of bias in final estimates of the survey, specially if the estimated variables (also known as target variables) have some influence on the decision of the respondent to participate in the survey. [...]
2018 - 10.2436/20.8080.02.73
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 159-182 (Articles)  
4.
24 p, 3.7 MB Field rules and bias in random surveys with quota samples : an assessment of CIS surveys / Pavía, Jose M. (Universitat de València. Departament de Matemàtica Aplicada) ; Aybar, Cristina (Universitat de València. Departament de Matemàtica Aplicada)
Surveys applying quota sampling in their final step are widely used in opinion and market research all over the world. This is also the case in Spain, where the surveys carried out by CIS (a public institution for sociological research supported by the government) have become a point of reference. [...]
2018 - 10.2436/20.8080.02.74
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 183-206 (Articles)  
5.
28 p, 2.9 MB Effect of agro-climatic conditions on near infrared spectra of extra virgin olive oils / Sánchez Rodríguez, María Isabel (Universidad de Córdoba. Departamento de Estadística, Econometría) ; Sánchez López, Elena M. (Universidad de Córdoba. Departamento de Química Orgánica) ; Caridad, José Mª (Universidad de Córdoba. Departamento de Estadística, Econometría) ; Marinas, Alberto (Universidad de Córdoba. Departamento de Química Orgánica) ; Urbano, Francisco José (Universidad de Córdoba. Departamento de Química Orgánica)
Authentication of extra virgin olive oil requires fast and cost-effective analytical procedures, such as near infrared spectroscopy. Multivariate analysis and chemometrics have been successfully applied in several papers to gather qualitative and quantitative information of extra virgin olive oils from near infrared spectra. [...]
2018 - 10.2436/20.8080.02.75
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 209-236 (Articles)  
6.
16 p, 542.3 KB Poisson excess relative risk models : new implementations and software / Higueras, Manuel (Universidad de La Rioja. Departamento de Matemáticas y Computación) ; Howes, Adam (Basque Center for Applied Mathematics - BCAM)
Two new implementations for fitting Poisson excess relative risk methods are proposed for assumed simple models. This allows for estimation of the excess relative risk associated with a unique exposure, where the background risk is modelled by a unique categorical variable, for example gender or attained age levels. [...]
2018 - 10.2436/20.8080.02.76
SORT : statistics and operations research transactions, Vol. 42 Núm. 2 (July-December 2018) , p. 237-252 (Articles)  

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