Power Variation and Time Change.
This paper provides limit distribution results for power variation, that is sums of powers of absolute increments, for certain types of time-changed Brownian motion and $\alpha $-stable processes. Special cases of these processes are stochastic volatility models used extensively in financial econome...
| Autori principali: | , |
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| Natura: | Working paper |
| Lingua: | English |
| Pubblicazione: |
Nuffield College (University of Oxford)
2002
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