南开大学信息技术科学学院计算机系,天津,300071
纸质出版:2006
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王刚, 董沙莎, 刘晓光, 等. 利用图的完全1-因子分解构造双容错数据布局[J]. 电子学报, 2006,34(S1):2447-2450.
WANG Gang, DONG Sha-sha, LIU Xiao-guang, et al. Construct Double-Erasure-Correcting Data Layout Using P1F[J]. Acta Electronica Sinica, 2006, 34(S1): 2447-2450.
本文介绍了一种full-2码的虚拟顶点简单图表示法
简化了双容错数据布局判定定理
最优冗余数据布局定理和双容错数据布局的构造.本文还提出了一种基于完全二部图(对应二维奇偶校验码)的完全1-因子分解的双容错数据布局构造方法
可构造高扩展性双容错数据布局BG-HEDP.与B-CODE等同类双容错数据布局相比
BG-HEDP同样具有更新代价最优、高可靠性和低编码/解码复杂度的优点
冗余率接近最优
而扩展性更好.
We present a "virtual node" simple graph representation for full-2 code(corresponds to complete graph)
this rep resentation simplifies the double erasure correcting data layout judgment theorem
the optimal redundancy data layo ut theorem and the construction of B-CODE.We also present a data layout construction method based on P1F of complete bipartite graph(corre sponds to 2d parity code)
this method can produce highly extensible double erasure correcting data layouts(BG-HEDP).Compared with other data layouts
such as B-CODE
BG-HEDP also has optimal update penalty
high reliability and low encoding/decoding complexity
its redundancy is very close to optimal value
while it is superior in extensibility to others.
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