查询词典 generalized Boolean algebra

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。

The monadic Boolean operation the result of which has the Boolean value opposite to that of the operand.

一种一元布尔运算，其运算结果的布尔值与操作数的值相反。

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。

Ge__. These methods can return any value, but if the comparison operator is used in a Boolean context, the return value should be interpretable as a Boolean value, else a TypeError will be raised.

ge__。这些方法可以返回任何值，但是如果比较运算符用于布尔上下文，返回值应该被解释成布尔值，否则将抛出TypeError异常，通常0表示假， 1用于表示真。

Boolean - return a constant boolean, true or false.

布尔--返回一个常量布尔，真或假

The decomposition theorem becomes a bridge connecting fuzzy matrix theory with Boolean matrix theory, so we start this problem from Boolean matrix.

由于分解定理建立了模糊矩阵和布尔矩阵之间的桥梁，所以我们首先从布尔矩阵开始对这个问题展开研究。

On the other hand, it is expressible as a Boolean expression if you accept including function calls in the Boolean expression.

但换个角度，如果你允许在布尔表达式中植入包含函数调用，则它就是一个布尔表达式可表述的属性。

The Boolean has_key and the in and not in operators are Boolean, returning True if a dictionary has that key and False otherwise.

布尔类型的has_key 和 in 或 not in 操作符都是布尔类型的。如果字典中有该键就返回真，否则返回假。

False.译者:原文: The Boolean has_key and the in and not in operators are Boolean, returning True if a dictionary has that key and False otherwise.

修改为：对布尔类型的方法has_key和in 或 not in 操作符而言，如果字典中有该键，执行has_key方法、in或not in操作符会返回真，否则返回假。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？