Abstract
We consider the asymptotic behavior, both in distribution and almost sure, of the Bahadur-Kiefer representation of the two dimensional spatial medians. The rates appearing in this expansion are non-standard. The rate in the almost sure expansion is n(2 log n)-1/2(2 log log n)-1. The set of clusters points in the almost sure representation is obtained. The distribution of the Bahadur-Kiefer representation of the two dimensional spatial medians converges with rate n(2 log n)-1/2 to a limit that is determined precisely.
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References
Arcones, M. A. (1994a). Some strong limit theorems for M-estimators, Stochastic Process. Appl., 53, 241–268.
Arcones, M. A. (1994b). On the weak Bahadur-Kiefer representation for M-estimators, Probability in Banach Spaces, 9 (eds. J. Hoffmann-Jørgensen, J. Kuelbs and M. B. Marcus), 357–372, Birkhäuser, Boston.
Arcones, M. A. (1995). Asymptotic normality of multivariate trimmed means, Statist. Probab. Lett., 25, 43–53.
Arcones, M. A. and Mason, D. M. (1992). A general approach to the Bahadur-Kiefer representations for M-estimators, Methods of Mathematical Statistics (to appear).
Bahadur, R. R. (1966). A note on quantiles in large samples, Ann. Math. Statist., 37, 577–580.
Carroll, R. J. (1978). On almost sure expansions for M-estimates, Ann. Statist., 6, 314–318.
Chow, Y. S. and Robbins, H. (1965). On the asymptotic theory of fixed sequential confidence intervals for the mean, Ann. Statist., 36, 457–462.
Duttweiler, D. L. (1973). The mean-square error of Bahadur's order-statistic approximation. Ann. Statist., 1, 446–453.
Haldane, S. J. (1948). Note on the median of a multivariate distribution, Biometrika, 35, 414–415.
Hoffmann-Jørgensen, J. (1991). Stochastic Processes on Polish Spaces, Aarhus Universitet Matematisk Institut Various Publications Series, No. 39, Aarhus, Denmark.
Kiefer, J. (1967). On Bahadur's representation of sample quantiles, Ann. Math. Stat., 38, 1323–1342.
Koltchinskii, V. (1994a). Bahadur-Kiefer approximation for spatial quantiles. Probability in Banach Spaces, 9 (eds. J. Hoffmann-Jørgensen, J. Kuelbs and M. B. Marcus), 401–415, Birkhäuser, Boston.
Koltchinskii, V. (1994b). Nonlinear transformations of empirical processes: functional inverses and Bahadur-Kiefer representations, Probability Theory and Mathematical Statistics, Proceedings of the Sixth Vilnius Conference (1993), 423–445, VSP BV, Zeist, The Netherlands, and TEV Ltd., Vilnius, Lithuania.
Milasevic, P. and Ducharme, G. R. (1987). Uniqueness of the spatial median. Ann. Statist., 15, 1332–1333.
Niemiro, W. (1992). Asymptotics for M-estimators defined by convex minimization, Ann. Statist., 20, 1514–1533.
Nolan, D. and Pollard, D. (1987). U-processes: rates of convergence, Ann. Statist., 15, 780–799.
Pfanzagl, J. with the assistance of W. Wefelmeyer (1985). Asymptotic expansions for general statistical models, Lecture Notes in Statist., 31, Springer, New York.
Pollard, D. (1990). Empirical Processes: Theory and Applications, NSF CBMS Regional Conference Series in Probab. and Statist., Vol. 2, Institute of Mathematical Statistics, Hayward, California.
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Arcones, M.A. The Bahadur-Kiefer Representation of the Two Dimensional Spatial Medians. Annals of the Institute of Statistical Mathematics 50, 71–86 (1998). https://doi.org/10.1023/A:1003449330662
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DOI: https://doi.org/10.1023/A:1003449330662