| calldata {sand} | R Documentation |
Austrian phone call network data
Description
A set of data for phone traffic 60 between 32 telecommunication districts in Austria throughout a period during the 61 year 1991.
Usage
calldata
Format
A data frame with 32 x 31 flow measurements, 992 rows, and seven columns:
-
Orig: factor, the origin district. -
Dest: factor, the destination district. -
DistEuc: numeric, Euclidean distance between the districts. -
DistRd: numeric, road distance between districts. -
O.GRP: numeric, gross regional product of the origin district, in Austrian schillings. -
D.GRP: numeric, gross regional product of the destination district, in Austrian schillings. -
Flow: the “amount” of phone calls from the origin district to the destination district, in erlang units (number of phone calls, including faxes, times the average length of the call divided by the duration of the measurement period).
Source
This dataset was provided to us by Suchi Gopal. Please cite the reference below if you use this dataset in your work.
References
M. Fischer, S. Gopal: Artificial neural networks: a new approach to modeling interregional telecommunication flows. J. Reg. Sci. 34(4), 503-527 (1994).