查询词典 rough-headed

The mutual coherence and angular correlation function of scattered wave from two dimensional non-Gaussian rough surfaces is deduced using the Gram-Charlie distribution, then the pulse scattering from two dimensional rough sea surface is calculated, and pulse broadeding is discussed.

基于Gram-Charlie分布函数并利用三阶统计特性推导出了非Gaussian二维粗糙面的双频互相关和角相关函数的计算公式，并以二维海面为例计算了其对几种典型波形脉冲的散射，讨论了脉冲展宽效应。

The approximation theorem of the rough neural network is proved. Then the method is applied to the fault verification of fighter plane, the simulation results show that the rough neural network is efficient.

最后将此方法应用于歼击机的故障认定系统，仿真结果表示，此粗糙神经网络可以很好地对具有区间数的歼击机故障认定系统进行故障认定。

The research on rough set axiomatic system plays an important role in the rough set theory and its applications.

粗糙集合理论是一种新的有效处理不精确、不确定、含糊信息的理论，粗集公理系统研究是粗集理论及应用研究的基础。

Main topics of this dissertation are as follows:(1) In this paper, we re-interpreted the basic concept of classical rough set theory based on VPRS, we also analyse the features and process of the application of rough set theory in data mining and pointed out the direction of the research.

本文的主要工作包括：(1)在可变精度粗糙集理论下对经典粗糙集的概念进行了重新的诠释；分析了粗糙集理论在数据挖掘应用中的理论根据和基本原理，并点出了研究的方向。

After analyze some kinds of extensions to the classical rough set theory, a new extension of rough set model based on limited non-symmetric similarity relation is developed.

为此，在分析研究已有的扩充粗糙集理论模型的基础上，进一步提出基于限制非对称相似关系的扩充粗糙集模型。

Rough Set theory is an useful tool to process inaccurate data. But classical rough set theory is not good enough to solve these problems when original data is fuzzy or indefinite.

但是在实际生活中，存在许多模糊现象不能简单地用传统理论精确地刻画，如何表示和处理这些现象是数据挖掘研究中的重要问题。

Considering that the classical rough set theory can only process the discrete data, the degree of general importance of an attribute and attribute subsets was presented. And then a generalization rough set theory was proposed based on the general near neighborhood relation.

针对经典粗糙集理论仅能处理离散化数据的局限性，提出属性和属性子集的广义重要度的概念以及空间中的广义近邻关系，并提出了广义近邻关系下的广义粗糙集扩展模型。

Based on the conditional rough entropy theory, the definition of the conditional rough entropy of set is given and it can measure the uncertainty of set. The properties and the related theorems are given.

基于知识的条件粗糙熵理论，提出了集合的条件粗糙熵概念，用来刻画和度量集合的不确定性。

The theory significance of conditional rough entropy in decision information system is discussed. The conditional rough entropy measures the partial uncertainty in decision information systems.

讨论了集合的条件熵在目标信息系统中的理论意义，集合的条件熵刻画了目标信息系统的局部的不确定性。

At first, analyze the farmer's desire for the pension by Rough Set theory, construct the attribute reduction algorithm based on the conditional entropy for the computation and analysis of 8,410 questionnaire surveys data to make use of the advantage of rough set to deal with indefinite and incomplete data.

首先利用粗糙集理论理不确定和不完整数据的优势，基于改进的基于条件熵的属性约简理论对8410份问卷调查数据进行计算与分析，得出与农民参保意愿密切相关的几个因素，如年龄、性别、收入、行业等。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。