Strong Law of Large Numbers for Weighted Sums of Random Variables and Its Applications in EV Regression Models

Journal of Systems Science and Complexity - Tập 35 - Trang 342-360 - 2021
Yunjie Peng1, Xiaoqian Zheng1, Wei Yu1, Kaixin He2, Xuejun Wang1
1School of Mathematical Sciences, Anhui University, Hefei, China
2Wendian College, Anhui University, Hefei, China

Tóm tắt

This paper mainly studies the strong convergence properties for weighted sums of extended negatively dependent (END, for short) random variables. Some sufficient conditions to prove the strong law of large numbers for weighted sums of END random variables are provided. In particular, the authors obtain the weighted version of Kolmogorov type strong law of large numbers for END random variables as a product. The results that the authors obtained generalize the corresponding ones for independent random variables and some dependent random variables. As an application, the authors investigate the errors-in-variables (EV, for short) regression models and establish the strong consistency for the least square estimators. Simulation studies are conducted to demonstrate the performance of the proposed procedure and a real example is analysed for illustration.

Tài liệu tham khảo

Sung S H, Almost sure convergence for weighted sum of i.i.d. random variables, Journal of the Korean Mathematical Society, 1997, 34(1): 57–67. Xu S F and Miao Y, Almost sure convergence of weighted sums for negatively associated random variables, Communications in Statistics — Theory and Methods, 2014, 43(10–12): 2581–2594. Deng X, Tang X F, Wang S J, et al., On the strong convergence properties for weighted sums of negatively orthant dependent random variables, Applied Mathematics — A Journal of Chinese Universities, Series B, 2018, 33(1): 35–47. Liu L, Precise large deviations for dependent random variables with heavy tails, Statistics and Probability Letters, 2009, 79: 1290–1298. Joag-Dev K and Proschan F, Negative association of random variables with applications, The Annals of Statistics, 1983, 11: 286–295. Liu L, Necessary and sufficient conditions for moderate deviations of dependent random variables with heavy tails, Science in China Series A: Mathematics, 2010, 53(6): 1421–1434. Chen Y, Chen A Y, and Ng K W, The strong law of large numbers for extended negatively dependent random variables, Journal of Applied Probability, 2010, 47: 908–922. Shen A T, Probability inequalities for END sequence and their applications, Journal of Inequalities and Applications, 2011, 2011: Article ID 98, 12 pages. Wu Y F and Guan M, Convergence properties of the partial sums for sequences of END random variables, Journal of the Korean Mathematical Society, 2012, 49(6): 1097–1110. Qiu D H, Chen P Y, Antonini R G, et al., On the complete convergence for arrays of rowwise extended negatively dependent random variables, Journal of the Korean Mathematical Society, 2013, 50(2): 379–392. Wu Y F, Cabrea M O, and Volodin A, Complete convergence and complete moment convergence for arrays of rowwise end random variables, Glasnik Matematički, 2014, 49(69): 449–468. Shen A T, On asymptotic approximation of inverse moments for a class of nonnegative random variables, Statistics-A Journal of Theoretical and Applied Statistics, 2014, 48(6): 1371–1379. Wang X J, Zheng L L, Xu C, et al., Complete consistency for the estimator of nonparametric regression models based on extended negatively dependent errors, Statistics — A Journal of Theoretical and Applied Statistics, 2015, 49(2): 396–407. Shen A T, Complete convergence for weighted sums of END random variables and its application to nonparametric regression models, Journal of Nonparametric Statistics, 2016, 28(4): 702–715. Yang W Z, Xu H Y, Chen L, et al., Complete consistency of estimators for regression models based on extended negatively dependent errors, Statistical Papers, 2018, 59: 449–465. Lita da Silva J, On the law of the logarithm for weighted sums of extended negatively dependent random variables, Stochastics — An International Journal of Probability and Stochastic Processes, 2016, 88(4): 622–631. Qiu D H and Xiao J, Complete moment convergence for Sung’s type weighted sums under END setup, Acta Mathematiea Scientia, Series A, 2018, 38(6): 1103–1111. Ma X C and Wu Q Y, On some conditions for strong law of large numbers for weighted sums of END random variables under sublinear expectations, Discrete Dynamics in Nature and Society, 2019, 2019: Article ID 7945431, 8 pages. Deaton A, Panel data from time series of cross-sections, Journal of Econometrics, 1985, 30(1): 109–126. Amemiya Y and Fuller W A, Estimation for the multivariate errors-in-variables model with estimated error covariance matrix, The Annals of Statistics, 1984, 12: 497–509. Carroll R J, Ruppert D, and Stefanski L A, Measurement Error in Nonlinear Models, Chapman and Hall, New York, 1995. Cui H J and Chen S X, Empirical likelihood confidence region for parameter in the errors-in-variables models, Journal of Multivariate Analysis, 2003, 84: 101–115. Miao Y, Wang K, and Zhao F F, Some limit behaviors for the LS estimator in simple linear EV regression models, Statistics and Probability Letters, 2011, 81(1): 92–102. Miao Y, Zhao F F, Wang K, et al., Asymptotic normality and strong consistency of LS estimators in the EV regression model with NA errors, Statistical Papers, 2013, 54(1): 193–206. Mittag H J, Estimating parameters in a simple errors-in-variables model: A new approach based on finite sample distribution theory, Statistical Papers, 1989, 30: 133–140. Wang X J and Hu S H, On consistency of least square estimators in the simple linear EV model with negatively orthant dependent errors, Electronic Journal of Statistics, 2017, 11(1): 1434–1463. Wang X J, Li X Q, Hu S H, et al., On complete convergence for an extended negatively dependent sequence, Communications in Statistics — Theory and Methods, 2014, 43(14): 2923–2937. Adler A and Rosalsky A, Some general strong laws for weighted sums of stochastically dominated random variables, Stochastic Analysis and Applications, 1987, 5(1): 1–16. Adler A, Rosalsky A, and Taylor R L, Strong laws of large numbers for weighted sums of random elements in normed linear spaces, International Journal of Mathematics and Mathematical Sciences, 1989, 12: 507–529.