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SYSTEM FOR DEFINING SIMULATION MODEL

  • US 20090094007A1
  • Filed: 10/04/2007
  • Published: 04/09/2009
  • Est. Priority Date: 10/04/2007
  • Status: Active Grant
First Claim
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1. A simulation model defining system for automatically generating a simulation program for simulating a behavior of economy or society regarded as a system, a relation between constituent elements of the system being represented by a casual relation, comprising:

  • a casual relation diagram defining unit for extracting, as nodes, specific items such as phenomenon, events and targets of said constituent elements, creating a casual relation by coupling said nodes with arcs, and setting metrics quantitatively representing a state amount to each of said nodes, to draw a casual relation diagram;

    a node table for storing a node name and drawing coordinates of each of said nodes;

    an arc table for storing node information on each of said nodes coupled to each of said arcs;

    a simulation model defining unit for adding a variable necessary for calculating said metrics to a simulation base model inheriting a structure of the casual relation of said casual relation diagram, explicitly writing a flow direction of information by extending a link between said metrics and said variable, and setting a calculation formula relative to said metrics and said variable, to define a simulation model;

    a variable table for storing information on a variable name, a variable type, a calculation model for identifying a calculation formula to be set, and the calculation formula, for each of said metrics and said variable;

    a link table for storing information on said variable connected to each of said link;

    a database for storing data of each of said tables and collectively managing the data; and

    a simulation program generating unit for automatically generating a simulation program in accordance with the data registered in said database.

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