Abstract
In the present paper we derive lower asymptotic information bounds of Cramér-Rao type for estimators of nonparametric statistical functionals. The results are based on dense differentiability and dense regularity concepts which lead to weak assumptions. As explicit examples L-estimators are treated. In addition a new rapid method for the treatment of survival functionals under randomly right censored data is presented. For instance, for the famous Kaplan-Meier and Nelson-Aalen estimators, our information bound is just the lower bound obtained earlier in the literature.
Similar content being viewed by others
References
Andersen PK, Borgan O, Gill RD, Keiding N (1993) Statistical models based on counting processes. Springer, New York
Beutner E, Zähle H (2010) A modified functional delta method and its application to the estimation of risk functionals. J Multivar Anal 101:2452–2463
Boos DD (1979) A differential for L-statistics. Ann Stat 7(5):955–959
Deheuvels P, Mason DM (1990) Bahadur-Kiefer-type processes. Ann Probab 18:669–697
Efron B, Johnstone I (1990) Fisher’s information in terms of the hazard rate. Ann Stat 18:38–62
Einmahl J (1996) A short and elementary proof of the main Bahadur-Kiefer theorem. Ann Probab 24:526–531
Gill RD (1980) Censoring and stochastic integrals. Math. Centre Tracts 124. Mathematisch Centrum, Amsterdam
Hájek J, Sidák Z (1967) Theory of rank tests. Academic Press, New York
Janssen A (1989) Local asymptotic normality for randomly censored data with applications to rank tests. Stat Neerl 43:109–125
Janssen A (1994) On local odds and hazard rate models in survival analysis. Stat Probab Lett 20:355–365
Janssen A (1998) Zur Asymptotik nichtparametrischer Tests. Lecture Notes. Skripten zur Stochastik Nr. 29. Gesellschaft zur Förderung der Mathematischen Statistik, Münster
Janssen A (2003) A nonparametric Cramér-Rao inequality for estimators of statistical functionals. Stat Probab Lett 64:347–358
Janssen A, Werft W (2004) A survey about the efficiency of two-sample survival tests for randomly censored data. Mitteilungen aus dem Mathematischen Seminar Giessen 254:1–47
Janssen A, Ostrovski V (2005) The convolution theorem of Hájek and Le Cam - revisited. arXiv:1309.4984
Janssen A, Wellek S (2010) Exact linear rank tests for two-sample equivalence problems with continuous data. Stat Neerl 64:482–504
Johansen S (1978) The product limit estimator as maximum likelihood estimator. Scand J Stat 5:195–199
Klein JP, Moeschberger ML (1997) Survival analysis: techniques for censored and truncated data. Springer, New York
Le Cam L, Yang GL (2000) Asymptotics in statistics. Some basic concepts, 2nd edn. Springer, New York
Lenstra AJ (2005) Cramér-Rao revisited. Bernoulli 11:263–282
Mason DM, Shorack GR (1992) Necessary and sufficient conditions for asymptotic normality of L-statistics. Ann Probab 20:1779–1804
Pfanzagl J (2003) Asymptotic bounds for estimators without limit distribution. Ann Inst Stat Math 55:95–110
Pfanzagl J, Wefelmeyer W (1982) Contributions to a general asymptotic statistical theory. Lecture notes in statistics 13. Springer, Berlin
Pfanzagl J, Wefelmeyer W (1985) Asymptotic expansions for general statistical models. Springer, Berlin
Ritov Y, Wellner JA (1988) Censoring, martingales and the Cox model. In: Pabhu NU (ed) Statistical inference from stochastic processes 80 (Contemporary Math Amer Math Soc, Providence, R.I), pp 191–219
Shorack GR (2000) Probability for statisticians. Springer, New York
Shorack GR, Wellner JA (1986) Empirical processes with applications to statistics. Wiley, New York
Stigler SM (1974) Linear functions of order statistics with smooth weight functions. Ann Stat 2:676–693
van der Vaart AW (1988) Statistical estimation in large parameter spaces. CWI tract 44, Centrum voor Wiskunde en Informatica, Amsterdam
van der Vaart AW (1998) Asymptotic statistics. Cambridge University Press, Cambridge
Wellner JA (1982) Asymptotic optimality of the product limit estimator. Ann Stat 10:595–602
Wellner JA (2012) Private communication in April 2012
Witting H, Müller-Funk U (1995) Mathematische Statistik II. Teubner, Stuttgart
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Janssen, A., Knoch, A. Information bounds for nonparametric estimators of L-functionals and survival functionals under censored data. Metrika 79, 195–220 (2016). https://doi.org/10.1007/s00184-015-0551-y
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00184-015-0551-y