Showing papers on "Process modeling published in 1971"

Two Process Models in the Economic Design of an X Chart

Abstract: Studies of the economic design of control charts often involve the modeling of process quality control within a definite cost structure in order to determine parameters of the control scheme which are optimal in a cost sense. In the modeling stage, it is usually convenient to assume that the distribution of the time a process remains in control has the memoryless property. This paper shows, by comparison with an alternative model, that such an assumption may be far from robust.

Variational methods in adaptive filtering

Abstract: The practical implications of linear filter theory have long been recognized. The reduction of this theory to practice has generally been a long and difficult process. Much of the difficulty centers around problems of proper modeling of system parameters and the prior statistics of the plant and measurement noise and initial states. It is possible to pose various adaptive filter algorithms which, in effect, cause the filter to learn the system model as the system operates in real time. A very attractive feature of this approach is that it may be possible to reduce the time required to implement acceptable system design by reducing the time necessary for process modeling.