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负载敏感的云任务三支聚类评分调度研究 被引量:11
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作者 吴俊伟 姜春茂 《智能系统学报》 CSCD 北大核心 2019年第2期316-322,共7页
在云计算商业化的服务模式中,追求服务质量、负载均衡与经济原则的多目标优化调度。针对集群资源使用率偏低的现象,提出了三支聚类评分(three-way clustering weight,TWCW)算法,首先分析云任务的多样化需求与资源的动态特性,采用三支聚... 在云计算商业化的服务模式中,追求服务质量、负载均衡与经济原则的多目标优化调度。针对集群资源使用率偏低的现象,提出了三支聚类评分(three-way clustering weight,TWCW)算法,首先分析云任务的多样化需求与资源的动态特性,采用三支聚类算法对任务集合聚类划分,然后结合任务属性对类簇对象进行评分调度。基于Cloudsim实验模拟表明:相比于k-means与FCM聚类调度,三支聚类评分算法(TWCW)在任务平均响应时间与资源利用率等方面均有显著提升。 展开更多
关键词 云计算 优化调度 多样化需求 动态资源 三支聚类 评分调度 任务响应时间 资源使用率
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Comprehensive Evaluation Model of Reservoir Operation Based on Improved Set Pair Analysis 被引量:4
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作者 任炳昱 孙宜超 +2 位作者 周正印 程正飞 胡兴富 《Transactions of Tianjin University》 EI CAS 2013年第1期25-28,共4页
A comprehensive evaluation model based on improved set pair analysis is established. Considering the complexity in decision-making process, the model combines the certainties and uncertainties in the schemes, i.e., id... A comprehensive evaluation model based on improved set pair analysis is established. Considering the complexity in decision-making process, the model combines the certainties and uncertainties in the schemes, i.e., identical degree, different degree and opposite degree. The relations among different schemes are studied, and the traditional way of solving uncertainty problem is improved. By using the gray correlation to determine the difference degree, the problem of less evaluation indexes and inapparent linear relationship is solved. The difference between the evaluation parameters is smaller in both the fuzzy comprehensive evaluation model and fuzzy matter-element method, and the dipartite degree of the evaluation result is unobvious. However, the difference between each integrated connection degree is distinct in the improved set pair analysis. Results show that the proposed method is feasible and it obtains better effects than the fuzzy comprehensive evaluation method and fuzzy matter-element method. 展开更多
关键词 set pair analysis comprehensive evaluation model gray correlation reservoir operation
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