bell.labs: Bell Labs 1router data from Cao et al. (2000)
Description
Data from 4-node network with star topology collected from
Bell Labs; used in Cao et al. (2000).
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.