Results 251 to 260 of about 10,169,362 (317)

CSS: Handling imbalanced data by improved clustering with stratified sampling

Concurrency and Computation, 2020
The traditional support vector machine technique (SVM) has drawbacks in dealing with imbalanced data. To address this issue, in this paper we propose an algorithm of improved clustering with stratified sampling technique (CSS) to improve the ...
Lu Cao, Hong-Mei Shen
semanticscholar   +1 more source

Use of coefficient of variation in calibration estimation of population mean in stratified sampling

Communications in Statistics - Theory and Methods, 2019
Calibration approach is becoming more important in survey sampling. Calibration estimation helps in improving the estimates of population parameters by making use of auxiliary information.
Neha Garg, Menakshi Pachori
semanticscholar   +1 more source

Reliability analysis with stratified importance sampling based on adaptive Kriging

Reliability Engineering & System Safety, 2020
In reliability engineering, estimating the failure probability of a system is one of the most challenging tasks. Since many applied engineering tasks are computationally expensive, it is challenging to estimate failure probabilities using acceptable ...
Sinan Xiao, S. Oladyshkin, W. Nowak
semanticscholar   +1 more source

Modified regression estimators using robust regression methods and covariance matrices in stratified random sampling

Communications in Statistics - Theory and Methods, 2020
This article proposes new regression-type estimators by considering Tukey-M, Hampel M, Huber MM, LTS, LMS and LAD robust methods and MCD and MVE robust covariance matrices in stratified sampling.
T. Zaman, H. Bulut
semanticscholar   +1 more source

Stratified and Post-Stratified Sampling

2003
Stratified and post-stratified sampling schemes are useful survey techniques commonly used by government agencies, private consultants, and applied statisticians. Let us differentiate between stratified and post-stratified sampling.
openaire   +1 more source

Development of a driving cycle for Istanbul bus rapid transit based on real-world data using stratified sampling method

Transportation Research Part D: Transport and Environment, 2019
Environmental as well as financial issues forces to develop clean, efficient, and sustainable vehicles which constitutes an integral part of our daily life for urban transportation.
Habib Kaymaz, H. Korkmaz, Hasan Erdal
semanticscholar   +1 more source

An efficient exponential estimator of the mean under stratified random sampling

Mathematical Population Studies, 2020
Stratification of population is a probability sampling design used to increase the precision of estimation. An efficient exponential ratio estimator allows estimating the population mean in stratified random sampling using an auxiliary variable.
T. Zaman
semanticscholar   +1 more source

Adaptive stratified sampling for structural reliability analysis

Structural Safety, 2023
Chenxiao Song, Reiichiro Kawai
semanticscholar   +1 more source

Estimation of the Shapley Value of a Peer-to-peer Energy Sharing Game Using Multi-Step Coalitional Stratified Sampling

International Journal of Control, Automation and Systems, 2021
Liyang Han, Thomas Morstyn, M. Mcculloch
semanticscholar   +1 more source

Stratified Sampling of Projected Spherical Caps

Computer graphics forum (Print), 2018
We present a method for uniformly sampling points inside the projection of a spherical cap onto a plane through the sphere's center. To achieve this, we devise two novel area‐preserving mappings from the unit square to this projection, which is often an ...
C. Ureña, Iliyan Georgiev
semanticscholar   +1 more source