This paper deals with continuous inspection schemes in terms
of CUSUM procedures. They can be considered as a sequence of
sequential likelihood ratio tests. For these tests we present
a method for the exact computation of the OC-function, the
ASN-function and their derivatives for integer-valued random
variables. This method is then applied in a modified manner to
the computation of the characteristics of the corresponding
CUSUM procedures. Then these investigations are extended to
continuous random variables. We consider corresponding
integral equations for the average run length and the
derivative of the average run length, respectively. We
present a statistically orientated approximation method for
solving these integral equations.
Keywords:
Sequential analysis, Sequential likelihood ratio tests,
OC-function, ASN-function, Continuous inspection schemes,
CUSUM procedures, Average run length