Results 21 to 30 of about 1,784,102 (271)

Essay: Sunday shopping - The case of three surveys

open access: yesSurvey Research Methods, 2015
There is a growing discussion about the use of non-probability sampling in survey research. Probability sampling is the preferred method of sample selection, but practical problems like reduced data collection budgets, increasing nonresponse rates, and ...
Jelke Bethlehem
doaj   +1 more source

Deep Hash Remote Sensing Image Retrieval with Hard Probability Sampling

open access: yesRemote Sensing, 2020
As satellite observation technology improves, the number of remote sensing images significantly and rapidly increases. Therefore, a growing number of studies are focusing on remote sensing image retrieval. However, having a large number of remote sensing
Xue Shan   +4 more
doaj   +1 more source

EDITORIAL – A REVIEW OF THE METHODOLOGICAL MISCONCEPTIONS AND GUIDELINES RELATED TO THE APPLICATION OF STRUCTURAL EQUATION MODELING: A MALAYSIAN SCENARIO [PDF]

open access: yesJournal of Applied Structural Equation Modeling, 2017
Although structural equation modeling (SEM) is a powerful statistical technique, understanding its methodological assumptions before data analyses is essential to attaining more robust results.
Mumtaz Ali Memon   +4 more
doaj  

Probabilistic sampling strategy as a means of improving quality of price indices

open access: yesCroatian Review of Economic, Business and Social Statistics, 2018
In spite of theoretical inferiority, a large majority of statistical institutes use non-probabilistic sampling techniques in price surveys. The main disadvantage of non-probabilistic sample design is that the risk of biased results is increased ...
Seljak Rudi   +3 more
doaj   +1 more source

Sampling constrained probability distributions using Spherical Augmentation

open access: yes, 2015
Statistical models with constrained probability distributions are abundant in machine learning. Some examples include regression models with norm constraints (e.g., Lasso), probit, many copula models, and latent Dirichlet allocation (LDA).
A Beskos   +41 more
core   +1 more source

Quality Assessment of Pre-Classification Maps Generated from Spaceborne/Airborne Multi-Spectral Images by the Satellite Image Automatic Mapper™ and Atmospheric/Topographic Correction™-Spectral Classification Software Products: Part 2 — Experimental Results

open access: yesRemote Sensing, 2013
This paper complies with the Quality Assurance Framework for Earth Observation (QA4EO) international guidelines to provide a metrological/statistically-based quality assessment of the Spectral Classification of surface reflectance signatures (SPECL ...
Andrea Baraldi   +2 more
doaj   +1 more source

Defining Predictive Probability Functions for Species Sampling Models

open access: yes, 2013
We review the class of species sampling models (SSM). In particular, we investigate the relation between the exchangeable partition probability function (EPPF) and the predictive probability function (PPF).
Lee, Jaeyong   +3 more
core   +1 more source

Sampling properties of random graphs: the degree distribution

open access: yes, 2005
We discuss two sampling schemes for selecting random subnets from a network: Random sampling and connectivity dependent sampling, and investigate how the degree distribution of a node in the network is affected by the two types of sampling.
B. Bollobás   +11 more
core   +1 more source

Sampling the Probability Distribution of Type Ia Supernova Lightcurve Parameters in Cosmological Analysis [PDF]

open access: yes, 2016
In order to obtain robust cosmological constraints from Type Ia supernova (SN Ia) data, we have applied Markov Chain Monte Carlo (MCMC) to SN Ia lightcurve fitting. We develop a method for sampling the resultant probability density distributions (pdf) of
Dai, Mi, Wang, Yun
core   +3 more sources

Size constrained unequal probability sampling with a non-integer sum of inclusion probabilities [PDF]

open access: yes, 2012
More than 50 methods have been developed to draw unequal probability samples with fixed sample size. All these methods require the sum of the inclusion probabilities to be an integer number.
Grafström, Anton   +3 more
core   +1 more source

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