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Approximation of a random process with variable smoothness
locally stationary processes multifractional Brownian motion piecewise constant approximation
2012/6/25
We consider the rate of piecewise constant approximation to a locally stationary process $X(t),t\in [0,1]$, having a variable smoothness index $\alpha(t)$. Assuming that $\alpha(\cdot)$ attains its un...