System and method for calculating status score based on tensor

A state score derivation method that operates in a state score derivation system equipped with a central processing unit and memory, the state score derivation method comprising:

• a normal-state matrix generation step of receiving process data in a normal state for a plurality of points in time and generating a two-dimensional (2D) normal-state matrix representative of a relationship between data values of a current point in time and a previous point in time for each point in time;
• a process data reception step of receiving process data;
• a checking target matrix generation step of periodically checking the received process data and generating a 2D checking target matrix representative of a relationship between data values of a current point in time and a previous point in time for each period;
• and
• a state score derivation step of deriving a state score by calculating a value representative of a difference between the normal-state matrix and the checking target matrix.