System Identification (Enhanced Edition‪)‬

Many problems in systems engineering, particularly those associated
with systems control, can be subdivided into four interrelated parts:
1. goal identification;
2. determination of position with respect to the goal;
3. determination of environmental factors affecting the past,
present, and future, and consequent establishment of a system
model;
determination of a policy in accordance with the goal definition
(l), knowledge of the current state (2), and system model and
environment (3).