Risk efficient estimation of fully dependent random coefficient autoregressive models of general order
Article Type
Research Article
Publication Title
Communications in Statistics - Theory and Methods
Abstract
We consider a stochastic dynamic model with autoregressive progression. The drift coefficients of the autoregressive model are random where the randomness in the coefficients can have any dependence structure. We propose a two-step sequential estimator and study the asymptotic behavior of few important properties. Paradigm of sequential estimation has its own advantage in reducing sample size and plugging estimates of nuisance parameters while inferring about the main parameters. Our proposed estimator is asymptotically optimal as the predictive risk of the proposed estimator attains the risk of the oracle that assumes known nuisance parameters. Extensive simulation confirms our results.
First Page
4242
Last Page
4253
DOI
10.1080/03610926.2017.1371758
Publication Date
9-2-2018
Recommended Citation
Karmakar, Bikram and Mukhopadhyay, Indranil, "Risk efficient estimation of fully dependent random coefficient autoregressive models of general order" (2018). Journal Articles. 1241.
https://digitalcommons.isical.ac.in/journal-articles/1241