Tools for network tomography

abilene | Abilene data from Fang et al. (2007) |

agg | Function to aggregate results from matrix to matrix |

bayesianDynamicFilter | Function for inference with multilevel state-space model |

bell.labs | Bell Labs 1router data from Cao et al. (2000) |

buildPrior | Construct prior from calibration model estimates |

buildRoutingMat | Build routing matrices for linked star topologies; that is, a... |

buildRoutingMatrix | Build routing matrix from table of link relationships |

buildStarMat | Build routing matrix for star network topology |

calcN | Compute total traffic from a particular time. |

calibration_ssm | Estimation for the linear SSM calibration model of Blocker &... |

cmu | CMU data from Blocker & Airoldi (2011) |

decomposeA | Compute pivoted decomposition of routing matrix A into... |

diag_ind | Make vector of 1-dimensional diagonal indices for square... |

diag_mat | Make diagonal matrix from vector |

dobj.dxt.tomogravity | Analytic gradient of objective function of Zhang et al. 2003 |

getActive | Check for deterministically-known OD flows at single time |

getSrcDstIndices | Find indices of source and destination for each... |

grad_iid | Compute analytic gradient of Q-function for locally IID EM... |

grad_smoothed | Compute analytic gradient of Q-function for smoothed EM... |

gravity | Run tomogravity estimation on complete time series of... |

gravity.fit | Gravity estimation for a single time point |

ipfp | Function to run basic IPFP (iterative proportional fitting... |

llCalibration | Evaluate marginal log-likelihood for calibration SSM |

locally_iid_EM | Run EM algorithm to obtain MLE for locally IID model of Cao... |

m_estep | Compute conditional expectations for EM algorithms of Cao et... |

mle_filter | Filtering & smoothing at MLE for calibration SSM |

move_step | Move step of sample-resample-move algorithm for multilevel... |

obj.tomogravity | Objective function of Zhang et al. 2003 |

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

Q_iid | Q function for locally IID EM algorithm of Cao et al. (2000) |

Q_smoothed | Q function for smoothed EM algorithm of Cao et al. (2000) |

R_estep | Compute conditional covariance matrix for EM algorithms of... |

smoothed_EM | Run EM algorithm to obtain MLE (single time) for smoothed... |

strphour | Convert time string to decimal hour |

thin | Thinning vector of indices for MCMC |

tomogravity | Run tomogravity estimation on complete time series of... |

tomogravity.fit | Tomogravity estimation for a single time point using L-BFGS-B |

twMCMC | Function to run MCMC sampling for model of Tebaldi & West... |

vardi.algorithm | Run algorithm of Vardi (1996) given B and S matrices |

vardi.compute.BS | Compute B and S matrices in algorithm of Vardi (1996) |

vardi.iteration | Execute single iteration for algorithm of Vardi (1996) |

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