The Evaluation Model and Method Based on Cloud Theory

doi:10.12068/j.issn.1005-3026.2019.06.022

Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (6): 881-885.DOI: 10.12068/j.issn.1005-3026.2019.06.022

• Resources & Civil Engineering • Previous Articles Next Articles

The Evaluation Model and Method Based on Cloud Theory

LIANG Li¹， XING Guan-hua¹， WU Feng-yuan²

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. School of Civil Engineering， Shenyang Jianzhu University， Shenyang 110168， China.

Received:2018-03-04 Revised:2018-03-04 Online:2019-06-15 Published:2019-06-14
Contact: XING Guan-hua
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Abstract

Abstract: An evaluation method based on cloud theory is proposed as follows: firstly， the degree analysis method is used to quantify the qualitative scales so that the cloud model of evaluation criteria can be established; then the index cloud parameters can be calculated according to the normalized measurement range and expert scores to obtain the cloud parameters of the evaluation samples by cloud computing according to the weight of the indexes from layer to layer; finally， a large number of sample points can be generated to calculate the mean value of certainty in the normal cloud generator to be the basis of the final rating. Compared with the evaluation method mentioned above， the certainty degree calculated from the value of expectation of samples can be distorted when there exists a lot of uncertainty. Taking the durability evaluation of stay cables as an example， the effectiveness and operability of the cloud theory method are verified， which proved to be a more scientific method for assessment problem.

Key words: cloud theory, cloud generator, certainty degree, degree analysis, durability of stay cables

CLC Number:

U448.1

LIANG Li， XING Guan-hua， WU Feng-yuan. The Evaluation Model and Method Based on Cloud Theory[J]. Journal of Northeastern University Natural Science, 2019, 40(6): 881-885.

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The Evaluation Model and Method Based on Cloud Theory

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[1]	LIANG Li， XING Guan-hua， REN Yi-peng， SUN Shuang. Reliability Evaluation on Stay Cables Based on Cloud Theory [J]. Journal of Northeastern University Natural Science, 2019, 40(4): 585-589.
[2]	LIANG Li， XING Guan-hua， WU Feng-yuan. Durability Risk Assessment of Stay Cables Based on Cloud Theory [J]. Journal of Northeastern University Natural Science, 2019, 40(3): 425-429.
[3]	LI Yang， GUO Ya-jun. A Method of Evidence Conflict Identification Based on the Uncertainty Degree [J]. Journal of Northeastern University:Natural Science, 2017, 38(6): 892-897.