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Martingale property of empirical processes

Sergio Albeverio, Yeneng Sun, Jiang-lun Wu

Transactions of the American Mathematical Society, Volume: 359, Issue: 2, Pages: 517 - 527

Swansea University Author: Jiang-lun Wu

Abstract

It is shown that for a large collection of independent martingales, the martingale property is preserved on the empirical processes. Under the as- sumptions of independence and identical finite-dimensional distributions, it is proved that a large collection of stochastic processes are martingales es...

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Published in: Transactions of the American Mathematical Society
ISSN: 0002-9947 1088-6850
Published: American Mathematical Society (AMS) 2006
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa33059
Abstract: It is shown that for a large collection of independent martingales, the martingale property is preserved on the empirical processes. Under the as- sumptions of independence and identical finite-dimensional distributions, it is proved that a large collection of stochastic processes are martingales essentially if and only if the empirical processes are also martingales. These two results have implications on the testability of the martingale property in scientific modeling. Extensions to submartingales and supermartingales are given.
Keywords: Essential independence, finite-dimensional distributions, empirical process, exact law of large numbers, Loeb product space, Keisler’s Fubini theorem, martingale, submartingale, supermartingale.
College: Faculty of Science and Engineering
Issue: 2
Start Page: 517
End Page: 527