Abstract
Let Mt be a vector martingale and 〈M〉t denote its predictable quadratic variation. In this paper we present a bound for the probability that z*〈M〉t-1M t>λz*〈M〉t -1z with a fixed vector z and discuss some of its applications to statistical estimation in autoregressive and linear diffusion models. Our approach is non-asymptotic and does not require any ergodic assumption on the underlying model.
Original language | English |
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Pages (from-to) | 347-357 |
Number of pages | 11 |
Journal | Statistics and Probability Letters |
Volume | 46 |
Issue number | 4 |
DOIs | |
State | Published - 15 Feb 2000 |
Keywords
- 62G05
- Autoregression
- Deviation probability
- Linear diffusion
- Martingale
- Maximum likelihood estimate
- Secondary 62M99