| 摘要 |
Diverse constraint elements which are such that buy or sell orders could not be placed in the electronic marketplace in the past are settled all at once, so that transactions of different types and attributes can be handled in the same market; and the possibility of transactors such as buyers and sellers being able to reach an agreement with transaction partners is greatly increased, so that transactions in the electronic marketplace are greatly promoted. In order to accomplish this, the contents of constraints involved in transactions, the value types for degree of settlement of constraints, and the constraint strengths, etc. are defined; and order data received in accordance with these definitions is processed on the basis of the values for degree of settlement and constraint strengths, so that one or more constraints are settled, and agreements are reached.
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