基于云模型和AHP的网络信息系统可生存性评估

doi:10.3969/j.issn.1000-436x.2014.08.014

摘要/Abstract

摘要：

针对当前网络信息系统可生存性评估指标的复杂性和定性概念评估问题，将云模型理论和 AHP 方法相结合，提出了一种基于云模型的多层次可生存性模糊评估方法。用 AHP 方法构建了多层次评估指标体系，并对各级指标权重进行有效计算。采用多维云模型与 AHP 方法结合，设计了定性指标和定性数据的量化模糊评估方法，得到了定性评估结果。实验结果表明，所提出评估方法能够实现复杂评估指标体系下的模糊量化评估，在计算的准确性和模糊性方面具有较好性能。

关键词: 可生存性评估, 多维云模型, 层次分析法, 模糊计算, 权重

Abstract:

Considering the problem of quantitative evaluation for qualitative survivability data and indexes of network information systems, the proposed method gives a multi-level survivability evaluation framework based on cloud model theory and AHP method. The algorithm builts a multi-level evaluation indexes system and compute the weight of each index using AHP method. Moreover, a quantitative method for qualitative data and a fuzzy evaluation method are de-signed via multidimensional cloud model. Finally, the experimental results show that the proposed method achieves a satisfactory result in quantitative evaluation of complex qualitative indexes, and has certain advantages in terms of accu-racy and fuzzy computing.

Key words: survivability evaluation, multidimensional cloud model, analytic hierarchy process, fuzzy computing, weigh

刘延华,陈国龙,吴瑞芬. 基于云模型和AHP的网络信息系统可生存性评估[J]. 通信学报, 2014, 35(8): 107-115.

Yan-hua LIU,Guo-long CHEN,Rui-fen WU. Survivability evaluation of network information system based on the cloud model and analytic hierarchy process[J]. Journal on Communications, 2014, 35(8): 107-115.

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标度a_ij	定义
1	表示2个因素相比，具有同样重要性
3	表示2个因素相比，一个比另一个稍重要
5	表示2个因素相比，一个比另一个明显重要
7	表示2个因素相比，一个比另一个非常重要
9	表示2个因素相比，一个比另一个绝对重要
246 8倒数	表示2个因素的比较值介于上述2个相邻等级之间因素i与j比较的判断值a_ij，则因素j与i比较的判断a_ji=1/a_ij,a_ii=1

维数	RI值
1	0
2	0
3	0.58
4	0.96
5	1.12
6	1.24
7	1.32
8	1.41
9	1.45

A	B₁	B₂	B₃	权重值	CR
B₁	1	3	1	0.428 6
B₂	1/3	1	1/3	0.142 8	0.000 1
B₃	1	3	1	0.428 6

B₁	C₁	C₂	C₃	C₄	权重值	CR
C₁	1	1/3	1/2	1	0.141 1
C₂	3	1	2	3	0.454 7	0.003 8
C₃	2	1/2	1	2	0.263 1
C₄	1	1/3	1/2	1	0.141 1

B₃	C₅	C₆	C₇	权重值	CR
C₅	1	1/2	2	0.297 3
C₆	2	1	3	0.539 0	0.007 9
C₇	1/2	1/3	1	0.163 8