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基于方差的最优组合赋权模型在网络信息资源评价中的应用
引用本文:江正华. 基于方差的最优组合赋权模型在网络信息资源评价中的应用[J]. 计算机应用, 2014, 34(1): 302-308. DOI: 10.11772/j.issn.1001-9081.2014.01.0302
作者姓名:江正华
作者单位:南京大学 数学系, 南京 210093
摘    要:针对网络信息资源自由开放、广泛存取、分布共享的特点,对网络空间中处于关键地位的信息节点--网站进行评价,不仅有助于改善网站自身的建设,而且更可促进整个网络信息资源的良性发展。依据最小方差原理,将运用熵权模糊综合评判法求得的客观权重与运用层次分析法求得的主观权重通过最优化组合计算出组合权重,对单一模型只确定出单纯的主观或客观权重进行了修正;再通过专家调查采集指标得分,进而构建出基于方差的最优组合赋权网站评价模型,使评判结果更具科学、合理。最后应用该模型对南京大学数学系网站进行实证评析,并获得日后网站重构或建设方面的一些启示。

关 键 词:网站评价  评价指标体系  最优组合赋权  方差  分配系数  熵权  层次分析法  
收稿时间:2013-06-18
修稿时间:2013-09-09

Application of variance-based optimal combined weight process in evaluating Internet information resources
JIANG Zhenghua. Application of variance-based optimal combined weight process in evaluating Internet information resources[J]. Journal of Computer Applications, 2014, 34(1): 302-308. DOI: 10.11772/j.issn.1001-9081.2014.01.0302
Authors:JIANG Zhenghua
Affiliation:Department of Mathematics, Nanjing University, Nanjing Jiangsu 210093, China
Abstract:In view of the essential characteristics of free openness, diffused access and distributed share from Internet information resources, a scientific evaluation of websites that are important information nodes in network space is helpful not only to improve their construction quality but also to obtain better development of network resources. Based on the minimum variance principle, a new optimal combined weight process was proposed to determine the combined weight which combined the objective weight based on entropy weight fuzzy synthetic evaluation and the subjective weight based on analytic hierarchy process. The objective weight or the subjective weight, which was only determined by a single weighting model, was amended. The scores of every index were calculated by the methods of expert investigation and statistical analysis. The combined weighting model can get a more scientific and reasonable result of decision-making for websites evaluation. In the end, the website of the Department of Mathematics at Nanjing University was taken as an example to illustrate the proposed model. Some direct suggestions were put forward to optimize website reconstruction in future.
Keywords:website evaluation   evaluation indicator system   optimal combined weight process   variance   distribution coefficient   entropy weight   Analytic Hierarchy Process (AHP)  
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