Linear Filtering of Systems with Memory
نویسندگان
چکیده
We study the linear filtering problem for systems driven by continuous Gaussian processes V1 and V2 with memory described by two parameters. The processes Vj have the virtue that they possess stationary increments and simple semimartingale representations simultaneously. It allows for straightforward parameter estimations. After giving the semimartingale representations of Vj by innovation theory, we derive Kalman-Bucy-type filtering equations for the systems. We apply the result to the optimal portfolio problem for an investor with partial observations. We illustrate the tractability of the filtering algorithm by numerical implementations.
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