A way to build a model, to receive a hierarchical tree structure that represents a system, where the hierarchical tree structure defines, receives, and associates with hardware components. Collecting the collected data, where the data is associated with the time stamp and the data contains the observational data associated with the physical system, and the first node state based on the data. In deriving the node state of a node, including the and second node states, the first node state defines the first state of the node and the second node state is the second state of the node. To define, derive, and build a finite state machine (FSM) model, where the FSM model defines a sequence of states associated with a node, at least partially based on time stamps. , A method comprising building an FSM model that is part of an overall finite state machine of a physical system and creating a model of the physical system based on the overall finite state machine.
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