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Topic 3

Topic 3. Grey System Theory. 1. Introduction. Grey system theory was initiated in 1982 by Julong Deng . The systems which lack information , such as structure message , operation mechanism and behavior document , are referred as grey systems .

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Topic 3

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  1. Topic 3 Grey System Theory

  2. 1. Introduction • Grey system theory was initiated in 1982 by Julong Deng. • The systems which lack information, such as structure message, operation mechanism and behavior document, are referred as grey systems. • A Grey system means that a system in which part of information is known and part of information is unknown. • Grey: poor, incomplete, uncertain, etc.

  3. Goal of Grey System • In general, the analysis of system characteristics is based on the statistical model which finds the statistical properties between data in a large sample set. • A large sample set is not that easy to be available; therefore, many systems are said in a status of poor information. • The goal of grey system and its applications is to bridge the gap existing between social science and natural science.

  4. Essential Topics • Grey relational space • Grey generating space • Grey forecasting(grey modeling) • Grey decision making • Grey control • Grey mathematics • Grey theory

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