phi_init

matrix (n x k) of observed link loads over time

numeric vector (length k) of initial
  guesses for lambda

lambda0

power parameter in model of Cao et al. (2000)


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


networkTomography implements the methods developed and evaluated in
Blocker and Airoldi (2011) and Airoldi and Blocker (2012). These include the
authors' own dynamic multilevel model with calibration based upon a Gaussian
state-space model in addition to implementations of the methods of Tebaldi &
West (1998; Poisson-Gamma model with MCMC sampling), Zhang et al. (2002;
tomogravity), Cao et al. (2000; Gaussian model with mean-variance relation),
and Vardi (1996; method of moments). Data from the 1router network of Cao et
al. (2000), the Abilene network of Fang et al. (2007), and the CMU network
of Blocker and Airoldi (2011) are included for testing and reproducibility.

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

Description

Usage

Arguments

Value

References

See Also