期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到4篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Meta-information generation in distributed information system 认领 引用 被引量：3
1
作者 苏健 高济 《Journal of Zhejiang University Science》 2002年第5期532-537,共6页
The authors discuss the concept of meta information which is the description of information system or its subsystems, and proposes algorithms for meta information generation. Meta information can be generated in paral... The authors discuss the concept of meta information which is the description of information system or its subsystems, and proposes algorithms for meta information generation. Meta information can be generated in parallel mode and network computation can be used to accelerate meta information generation. Most existing rough set methods assume information system to be centralized and cannot be applied directly in distributed information system. Data integration, which is costly, is necessary for such existing methods. However, meta information integration will eliminate the need of data integration in many cases, since many rough set operations can be done straightforward based on meta information, and many existing methods can be modified based on meta information. 展开更多
关键词 Meta information Distributed information system Rough set
暂未订购 下载PDF
Block-based test data adequacy measurement criteria and test complexity metrics 认领 引用
2
作者 陈卫东 杨建军 +1 位作者 叶澄清 潘云鹤 《Journal of Zhejiang University Science》 2002年第1期37-41,共5页
On the basis of software testing tools we developed for programming languages, we firstly present a new control flowgraph model based on block. In view of the notion of block, we extend the traditional program\|based ... On the basis of software testing tools we developed for programming languages, we firstly present a new control flowgraph model based on block. In view of the notion of block, we extend the traditional program\|based software test data adequacy measurement criteria, and empirically analyze the subsume relation between these measurement criteria. Then, we define four test complexity metrics based on block. They are J\|complexity 0; J\|complexity 1; J\|complexity \{1+\}; J\|complexity 2. Finally, we show the Kiviat diagram that makes software quality visible. 展开更多
关键词 block node segment control flowgraph model test data adequacy measurement criteria test complexity metric Kiviat diagram
暂未订购 下载PDF
Efficient volume preserving approach for skeleton-based implicit surfaces 认领 引用
3
作者 史红兵 童若锋 董金祥 《Journal of Zhejiang University Science》 2003年第6期637-642,共6页
This paper presents an efficient way to preserve the volume of implicit surfaces generated by skeletons. Recursive subdivision is used to efficiently calculate the volume. The criterion for subdivision is obtained by ... This paper presents an efficient way to preserve the volume of implicit surfaces generated by skeletons. Recursive subdivision is used to efficiently calculate the volume. The criterion for subdivision is obtained by using the property of density functions and treating different types of skeletons respectively to get accurate minimum and maximum distances from a cube to a skeleton. Compared with the criterion generated by other ways such as using traditional Interval Analysis, Affine Arithmetic, or Lipschitz condition, our approach is much better both in speed and accuracy. 展开更多
关键词 Volume preserving Skeleton based implicit surface Subdivision criterion Interval analysis
暂未订购 下载PDF
Optimistic Voting for Managing Replicated Data 认领 引用 被引量：1
4
作者 林怀忠 陈纯 《Journal of Computer Science & Technology》 SCIE EI 2002年第6期874-881,共8页
An epidemic model gives an efficient approach for transaction processing ofreplication systems in weakly connected environments. The approach has the advantages ofhigh adaptation, support for low-bandwidth network, an... An epidemic model gives an efficient approach for transaction processing ofreplication systems in weakly connected environments. The approach has the advantages ofhigh adaptation, support for low-bandwidth network, and committing updates in an entirelydecentralized control fashion. But the previous implementing protocols, like ROWA protocol,quorum protocol, and voting protocol, have a common shortcoming that they are pessimisticin conflict reconciliation, therefore bring high transaction abort rate and reduce system perfor-mance dramatically when the workload scales up. In this paper, an optimistic voting protocol,which introduces condition vote and order vote in the voting process of transactions, is pro-posed. The condition vote and order vote postpone the final decision on conflicting transactionsand avoid transaction aborts that are incurred by read-write and write-write conflicts. Exper-imental results indicate that the optimistic voting protocol decreases abort rate and improvesaverage response time of transactions markedly when compared to other protocols. 展开更多
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈