查询词典 Boolean value

An improved Boolean matching algorithm based on transforming the mapping between Boolean variables into the problem of perfect matching of bipartite graph is presented.

引 言布尔匹配的概念最初是由Mailhot和 de Micheli提出的[1] ，它主要用于集成电路设计中的工艺映射阶段。

Like ordinary algebra, Boolean algebra has its own unique identities based on the bivalent states of Boolean variables.

象普通代数，布尔代数具有基于布尔变量的二价规定的独特的特性。

There define the Boolean operations for Boolean algebra of two and four elements,respectively.

这里分别定义了具有两个和四个元素的布尔代数的布尔运算。

After that the construction of resilient Boolean functions becomes an important direction of the research of Boolean function.

此后，弹性函数的构造一直是布尔函数研究中的一个重要工作。

Bent function is a class of the highest nonlinearity Boolean function, and Boolean function is the key in the cipher system.

Bent函数是一类具有最高非线性度的布尔函数，布尔函数是对称加密密码体制设计和分析的关键。

By analyzing the relationship between the algebraic degree and characteristic matrix of a Boolean function,the relationship between the algebraic immunity and characteristic matrix of a Boolean function is obtained.

通过分析布尔函数的代数次数与特征矩阵的关系，得到了布尔函数的代数免疫度与特征矩阵的关系。

There are a couple of things you should definitely be aware of: you should understand how to represent numbers in different bases and how to manipulate boolean expressions using boolean logic.

有几件事情是你必须做到的：你要清楚怎样用不同的进制表示一个数，还要知道如何用布尔逻辑计算布尔表达式。

It is proved that a semiring is complemented if and only if it is a direct product of some Boolean algebra and Boolean ring by studying the relations of congruences on the complemented semiring, so the complemented semiring is the commutative semiring.

s-内射模。通过研究可补半环S的性质及S上的同余关系，证明出可补半环与布尔环和布尔代数的直积是等价的，因而可补半环是交换半环。

This passage analyzes the advantage and disadvantage of the Boolean Model and the Vector Space Model in information retrieval model: the Boolean Model is simple to realize, but its classification ability is limited and the logic expression formula is strict.

本文分析了信息检索中传统文档特征表示的布尔逻辑模型和向量空间模型的优缺点：布尔逻辑模型虽机制简单、容易实现，但是它的分类能力有限且逻辑表达式过于严格；向量空间模型将文档映射到连续域向量空间，为进一步的权重计算等多元处理提供了基础，但容易忽略文档集合中各个文档的一些共有特征。

Second, in the viewpoint of crypto analysis, the practical requirement for the cryptographic function is to construct the function that can resist all the known crypto analysis and attacks. In advanced, the main cryptographic properties are compared, and the relation among these cryptographic properties is analyzed, including the trade-off ones. Get the conclusion that the construction of cryptographic Boolean function is to find out the proper Boolean function in the whole vector space under the restriction of several cryptographic properties required for the security system.

然后本文从密码分析的角度，讨论了密码函数的实际需求，即构造能够抵抗已有密码分析与攻击的布尔函数；分析了布尔函数的主要的密码学性质，并比较了这些性质之间的相互关系，包括制约的关系；得出了构造布尔函数的实质的结论，即在向量空间中构造全体布尔函数，以所需的若干密码学性质作为限制条件，用有限域上的多项式、Walsh谱、Hadamard矩阵等数学工具找出适当的布尔函数用于加密体制的设计。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样