共查询到7条相似文献,搜索用时 0 毫秒
1.
二叉决策图(BDDs)是布尔函数的一个表示方法,最近它被广泛于逻辑综合、布尔电路的模拟和测试等领域。在这些应用中,有些基本问题需要解决,其中包括电路图到决策图的转换。本文提出一个转换的方法。文中分两步叙述,首先是对无扇出电路的转换,然后是对有扇出电路的转换,最后把两者结合为一个通用算法。 相似文献
2.
布尔函数是数字系统与计算机科学等领域的基础,有广泛的应用。本文对布尔函数的二元判定图表示方法进行了详细讨论,说明了基于布尔函数的真值表和香农展开式来构造二元判定图的方法、二元判定图的简化、以及它在数字电路设计与测试中的应用。 相似文献
3.
Multi-Terminal Binary Decision Diagrams: An Efficient Data Structure for Matrix Representation 总被引:1,自引:1,他引:1
In this paper, we discuss the use of binary decision diagrams to represent general matrices. We demonstrate that binary decision diagrams are an efficient representation for every special-case matrix in common use, notably sparse matrices. In particular, we demonstrate that for any matrix, the BDD representation can be no larger than the corresponding sparse-matrix representation. Further, the BDD representation is often smaller than any other conventional special-case representation: for the n×n Walsh matrix, for example, the BDD representation is of size O(log n). No other special-case representation in common use represents this matrix in space less than O(n2). We describe termwise, row, column, block, and diagonal selection over these matrices, standard an Strassen matrix multiplication, and LU factorization. We demonstrate that the complexity of each of these operations over the BDD representation is no greater than that over any standard representation. Further, we demonstrate that complete pivoting is no more difficult over these matrices than partial pivoting. Finally, we consider an example, the Walsh Spectrum of a Boolean function. 相似文献
4.
5.
6.
符号化模型检测CTL 总被引:13,自引:0,他引:13
提出了一个关于时态逻辑CTL* 的符号化模型检测算法.该算法通过所谓的tableau构造方法来判定一个有限状态系统是否满足CTL*规范. 根据该理论,作者已实现了一个基于OBDD技术的CTL*符号化模型检测工具MCTK,并完成了相当数量的实验.到目前为止,已知有名的符号化模型检测工具,如SMV和NuSMV等, 都只能对CTL*的子集逻辑(如CTL,LTL)进行检测,而文中算法的结果是令人满意的,并且当规范不是特别复杂时, 高效的CTL*符号化模型检测是可能的. 相似文献