asia: Asia (synthetic) data set by Lauritzen and Spiegelhalter
Description
Small synthetic data set from Lauritzen and Spiegelhalter (1988)
about lung diseases (tuberculosis, lung cancer or bronchitis)
and visits to Asia.
Usage
data(asia)
Arguments
format
The asia data set contains the following variables:
D(dyspnoea), a two-level factor with levelsyesandno.
T(tuberculosis), a two-level factor with levelsyesandno.
L(lung cancer), a two-level factor with levelsyesandno.
B(bronchitis), a two-level factor with levelsyesandno.
A(visit to Asia), a two-level factor with levelsyesandno.
S(smoking), a two-level factor with levelsyesandno.
X(chest X-ray), a two-level factor with levelsyesandno.
E(tuberculosis versus lung cancer/bronchitis), a
two-level factor with levelsyesandno.
source
Lauritzen S, Spiegelhalter D (1988). "Local Computation with Probabilities
on Graphical Structures and their Application to Expert Systems (with
discussion)". Journal of the Royal Statistical Society: Series B
(Statistical Methodology), 50(2), 157-224.
# load the data and build the correct network from the model string.data(asia)
res = empty.graph(names(asia))
modelstring(res) = "[A][S][T|A][L|S][B|S][D|B:E][E|T:L][X|E]"plot(res)