Computer Science ›› 2018, Vol. 45 ›› Issue (1): 113-117.doi: 10.11896/j.issn.1002-137X.2018.01.018

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Optimal Scale Selection in Multi-scale Decision Systems under Environment of Objects Updating

TIE Wen-yan, FAN Min and LI Jin-hai   

  • Online:2018-01-15 Published:2018-11-13

Abstract: Multi-scale decision system is an important kind of relational databases,and the optimal scale selection is one of the main research targets in the study of multi-scale decision system.This paper discussed the optimal scale selection of multi-scale decision systems under the environment of objects updating.First,the notions of the multi-scale information system and multi-scale decision system were presented.Then,a generalized decision function was defined and used to introduce the consistency and the optimal scale in the multi-scale decision systems.At last,the optimal scale transformation mechanism of different consistent multi-scale decision systems were investigated under the environment of objects updating.

Key words: Multi-scale decision system,Generalized decision function,Consistency,Optimal scale

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