查询词典 definitions

Firstly, those useless to classify texts are filtered according the category document frequency distribution difference of each feature; and then in order to overcome the limitations of TF-IDF weighting formula a novel weighting formula called TF-CDF is presented . Calculate the weight of each feature according to TF-CDF and build the Vector Space Model for the entire corpus. To select significant features, a feature selection approach based on Variable Precision Rough Set is also proposed and implement with some SQL sentences combining the definitions of VPRS with the advantages of SQL sentences.

该文首先根据特征词的类别分布差异进行特征过滤；然后，分析传统的权值公式TF-IDF的缺点，采用改进的权值计算公式简记为TF-CDF，依据TF-CDF公式计算每个特征词的权值，生成文档集的向量空间模型VSM；接着，提出了一种基于可变精度粗糙理论的特征选择进一步选择对分类贡献度大的特征，并用SQL实现。

A student of mathematics must become familiar with and fix in mind the signs and symbols, the definitions and technical terms in mathematics, in order that he may be able to have the foundation of the mathematical subject and master it well for further study.

为了能打下数学基础，掌握好数学，以便进一步学习深造，一个学数学的人必须熟悉并牢记数学中所用的记号和符号，定义和术语。

We also use footnotes for definitions of elementary terms that an experienced programmer is unlikely to need.

我们也用脚注来给出一些基本术语的定义，这些定义对有经验的程序员而言通常都是不需要的。

These definitions are terribly inadequate, but they may serve our purpose if we understand from them the following points;（1）The judicial process deals not with abstract questions or hypothetical situations but with actual controversies between real parties;（2）These controversies are such that the community will direct its collective force to their resolution;（3）This resolution proceeds not arbitrarily but according to some standards of general application;（4）These standards are applied in a proceeding that follows some fixed lines set out by a system of rules known as procedure.

These定义可怕的不足，但他们可能为我们的目的，如果我们从他们的以下几点：（ 1 ）在司法程序处理而不是抽象的问题或假设情况，但实际真正的当事方之间的争议；（ 2 ）这些争议是这样，社会将直接集体武力来解决。（ 3 ）本决议的收益不被任意，但据一些普遍适用的标准；（ 4 ）这些标准适用于诉讼中的一些固定线路如下所规定的一套规则称为procedure。

Features Internet Updateable (with purchase of CP9137)- Trilingual Display Screen - Displays freeze frame data (snapshot of the operating conditions at the time of the fault)- Review data off-vehicle - Battery Powered - Reads and erases Diagnostic Trouble Codes and turns off check engine light - Retrieves all Generic OBD II trouble codes (P0), their definitions and pending codes - Enables user to quickly and easily link to their vehicle - Large easy-to-read LCD screen provides the Diagnostic Trouble Codes and their descriptions - Extremely user friendly menu provides:- Monitor Status and I/M Readiness to determine if vehicle is ready for an emissions test.

特点互联网更新（购买cp9137 ）-三种语言显示屏幕-显示器冻结帧数据（快照的操作条件，在时间的断层）-审查数据越野车-电池供电-内容和泯灭诊断故障码和关闭检查发动机轻-返回所有的通用的o bd二故障码（ p 0），其定义和解释，有待码-使用户能够迅速，轻松地链接到自己的汽车-大型易于阅读的液晶显示屏幕提供诊断故障码及其说明-非常方便用户菜单规定：-监察地位和我/米准备，以确定如果汽车已经准备好了排放测试。

Definitions for Matrices and Linear Algebra. Function: ADDCOL M, list 1, list 2,...

下列出Maxima 有关矩阵和线性代数的定义或函数，可自行参考：。

The syntax of function declaration also changes, so that declarations and definitions match.

为了使函数的声明与定义相适应，ANSI标准对函数定义的语法也做了修改。

In particular, function definitions bind the name of the new

都会处于这个新的命名空间。

In particular, function definitions bind the name of the new function here.

特别是函数定义将新函数的命名绑定于此。

Lens space's fundamental group, homology and homeomorphism of lens space are studied based on the definitions.

我们可以从不同的角度对透镜空间给出 3 个图 1 透镜空间的构造过程不同的定义。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&