clusexpect: Expected value of the number of times a fixed point
cluster is found
Description
A rough approximation of the expectation of the number of times a well
separated fixed point
cluster (FPC) of size n is found in ir fixed point
iterations of fixreg.
Usage
clusexpect(n, p, cn, ir)
Value
A number.
Arguments
n
positive integer. Total number of points.
p
positive integer. Number of independent variables.
cn
positive integer smaller or equal to n.
Size of the FPC.
ir
positive integer. Number of fixed point iterations.
The approximation is based on the assumption that a well separated FPC
is found iff all p+2 points of the initial coinfiguration come
from the FPC. The value is ir times the probability for
this. For a discussion of this assumption cf. Hennig (2002).
References
Hennig, C. (2002) Fixed point clusters for linear regression:
computation and comparison, Journal of
Classification 19, 249-276.