• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2008, Vol. 30 ›› Issue (11): 83-85.

• 论文 • 上一篇    下一篇

并发系统概率空间的形式化构造方法

王金双 张兴元 杨华兵 张毓森   

  • 出版日期:2008-11-01 发布日期:2010-05-19

  • Online:2008-11-01 Published:2010-05-19

摘要:

本文用Paulson归纳法描述并发系统,对系统执行的不确定性进行建模,给出了一种适合定义测度的产生集合,利用测度评估函数将产生集合的测度与有限执行序列的测度联系起来;证明执行序列集合上的测度满足非负性和可列可加性,利用测度扩张定理构造并发系统执行序列集合上的概率空间。所有证明脚本经过定理证明工具Isabelle/HOL /Isar的检查。

关键词: 概率空间 Isabelle/HOL/Isar 定理证明

Abstract:

The paper describes concurrent systems with Paulson's inductive approach. In the paper, a set of generation sets is given, which is suitable for defining measures. The relation between the measure of finite executions and the measure of the sets of infinite runs is evaluated with a canonical function . It is proved that the measure of the sets of infinite runs is positive and eountably additive. With the Caratheodory's extension theorem, the probabi ility space on the set of infinite runs of concurrent systems is constructed. All scripts are checked with Isabell/HOL/Isar.

Key words: probability space, Isabelle/HOL/Isar, theorem proving