phi_init: Simple initialization for phi in model of Cao et al. (2000)

In awblocker/networkTomography: Tools for Network Tomography

Simple initialization for phi in model of Cao et al. (2000)

Description

Uses a crude estimator to get a starting point for phi in the model of Cao et al. (2000).

Usage

phi_init(Y, A, lambda0, c)

Arguments

Y	matrix (n x k) of observed link loads over time
A	routing matrix (m x k)
lambda0	numeric vector (length k) of initial guesses for lambda
c	power parameter in model of Cao et al. (2000)

Value

numeric starting value for phi

References

J. Cao, D. Davis, S. Van Der Viel, and B. Yu. Time-varying network tomography: router link data. Journal of the American Statistical Association, 95:1063-75, 2000.

See Also

Other CaoEtAl: Q_iid(), Q_smoothed(), R_estep(), grad_iid(), grad_smoothed(), locally_iid_EM(), m_estep(), smoothed_EM()

awblocker/networkTomography documentation built on May 14, 2022, 10:05 p.m.