Description Value Slots References Examples
A specification class to create an object of a simulated piecewise constant conditional duration model of order (1,1). x_t / ψ_t = \varepsilon_t \; \sim \mathcal{G}(θ_2) ψ_t = ω(t) + ∑_{j=1}^p α_{j}(t)x_{t-j} + ∑_{k=1}^q β_{k}(t)ψ_{t-k}. where ψ_{t} = \mathcal{E} [x_t | x_t,…,x_1| θ_1] is the conditional mean duration of the t-th event with parameter vector θ_1 and \mathcal{G}(.) is a general distribution over (0,+∞) with mean equal to 1 and parameter vector θ_2. In this work we assume that \varepsilon_t \; \sim \exp(1).
Returns an object of simACD
class.
x
The durational time series.
psi
The psi time series.
N
Sample sze of the time series.
cp.loc
The vector with the location of the changepoints. Takes values from 0 to 1 or NULL. Default is NULL.
lambda_0
The vector of the parameters lambda_0 in the ACD series as in the above formula.
alpha
The vector of the parameters alpha in the ACD series as in the above formula.
beta
The vector of the parameters beta in the ACD series as in the above formula.
BurnIn
The size of the burn-in sample. Note that this only applies at the first simulated segment. Default is 500.
Korkas Karolos. "Ensemble Binary Segmentation for irregularly spaced data with change-points" Preprint.
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