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

In networkTomography: Tools for network tomography

Description

Data from 4-node network with star topology collected from Bell Labs; used in Cao et al. (2000).

Usage

bell.labs

Objects

The list bell.labs, which contains several objects:

• A, the routing matrix for this network (truncated for full row rank)

• df, a data.frame with all data

• X, a matrix of origin-destination flows formatted for analysis

• Y, a matrix of link loads formatted for analysis

• tvec, a vector of times

In this data, we have A %*% t(X) == t(Y).

Variables

The list bell.labs contains the following:

• The routing matrix A. The columns of this matrix correspond to individual OD flows (the columns of X), and its rows correspond to individual link loads (the columns of Y).

• The data.frame df, containing

  • value, level of traffic recorded

  • nme, name of flow or load

  • method, whether flow was directly observered or inferred (all observed)

  • time, time of observation

  • od, flag for origin-destination vs. link loads

  • orig, origin of flow or load

  • dest, destination of flow or load

  • node, node involved in flow or load

• The OD matrix X. Columns correspond to individual OD flows, and the rows correspond to observations.

• The link load matrix Y. Columns of the Y matrix correspond to individual link loads, and the rows correspond to observations.

• The vector tvec, containing the time in decimal hours since midnight for each observation.

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.

networkTomography documentation built on May 2, 2019, 3:28 a.m.