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

Description Usage Arguments Value References See Also

View source: R/caoEtAl.R

Description

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

Usage

1
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


networkTomography documentation built on May 29, 2017, 4:56 p.m.