Results 11 to 20 of about 60,047 (288)

Two-stage adaptive cluster sampling [PDF]

open access: yesStatistical Methods & Applications, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Naddeo, Stefania, Pisani, Caterina
openaire   +3 more sources

Ratio Estimator in Adaptive Cluster Sampling without Replacement of Networks [PDF]

open access: yesJournal of Probability and Statistics, 2014
In this paper, we study the estimators of the population total in adaptive cluster sampling by using the information of the auxiliary variable. The numerical examples showed that the ratio estimator in adaptive cluster sampling without replacement of ...
Nipaporn Chutiman, Monchaya Chiangpradit
doaj   +2 more sources

Inventory of sparse forest populations using adaptive cluster sampling [PDF]

open access: yesSilva Fennica, 2006
In many studies, adaptive cluster sampling (ACS) proved to be a powerful tool for assessing rare clustered populations that are difficult to estimate by means of conventional sampling methods.
Talvitie, Mervi   +2 more
doaj   +2 more sources

Improved Unbiased Estimators in Adaptive Cluster Sampling

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 2004
SummaryThe usual design-unbiased estimators in adaptive cluster sampling are easy to compute but are not functions of the minimal sufficient statistic and hence can be improved. Improved unbiased estimators obtained by conditioning on sufficient statistics—not necessarily minimal—are described. First, estimators that are as easy to compute as the usual
Dryver, Arthur L., Thompson, Steven K.
openaire   +2 more sources

Comparação entre procedimentos de amostragem para espécies florestais raras e padrão de distribuição espacial agregado Comparison between sampling procedures for rare forest species and aggregated spatial distribution pattern

open access: yesRevista Árvore, 2009
O objetivo deste trabalho foi comparar procedimentos de amostragem para espécies florestais com populações raras e padrão de distribuição espacial agregado.
Carlos Pedro Boechat Soares   +5 more
doaj   +1 more source

Improved ratio type generalized class of estimators in two phase adaptive cluster sampling [PDF]

open access: yesBig Data and Computing Visions
In this paper, an improved ratio type class of estimators in the two phase Adaptive Cluster Sampling (ACS) design under the transformed population approach has been proposed.
Rohan Mishra, Rajesh Singh
doaj   +1 more source

Optimization of Scat Detection Methods for a Social Ungulate, the Wild Pig, and Experimental Evaluation of Factors Affecting Detection of Scat. [PDF]

open access: yesPLoS ONE, 2016
Collection of scat samples is common in wildlife research, particularly for genetic capture-mark-recapture applications. Due to high degradation rates of genetic material in scat, large numbers of samples must be collected to generate robust estimates ...
David A Keiter   +4 more
doaj   +1 more source

Improvement of low level bark beetle damage estimates with adaptive cluster sampling

open access: yesSilva Fennica, 2010
Detection of low level infestation in forest stands is of principle importance to determine effective control strategies before the attack spread to large areas.
Coggins, Sam   +2 more
doaj   +1 more source

Variance estimation in stratified adaptive cluster sampling

open access: yes, 2022
In many sampling surveys, the use of auxiliary information at either the design or estimation stage, or at both these stages is usual practice. Auxiliary information is commonly used to obtain improved designs and to achieve a high level of precision in ...
Hanif, Muhammad   +2 more
core   +1 more source

Accelerating Energy-Economic Simulation Models via Machine Learning-Based Emulation and Time Series Aggregation

open access: yesEnergies, 2022
Energy-economic simulation models with high levels of detail, high time resolutions, or large populations (e.g., distribution networks, households, electric vehicles, energy communities) are often limited due to their computational complexity. This paper
Alexander J. Bogensperger   +2 more
doaj   +1 more source

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