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14 - Non-Linear Filtering with Counting-Process Observations

from Part IV - Non-Linear Filtering Theory

Published online by Cambridge University Press:  27 May 2021

Tomas Björk
Affiliation:
Stockholm School of Economics
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Summary

Here we derive the basic filtering theory for processes with scalar counting-process observations. We discuss optional and predictable projections, introduce the innovation process, and derive the non-linear filtering equations. We also derive the filtering equations for a finite-state Markov chain. We prove a result concerning separation between filtering and detection and we derive the relevant Zakai equation for the unnormalized density.

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Point Processes and Jump Diffusions
An Introduction with Finance Applications
, pp. 149 - 162
Publisher: Cambridge University Press
Print publication year: 2021

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