数据

Traditional data mining techologies used in data mining need to build intrusion detection model in labled data set. The process to lable data set is all by hands, and if the lables have some errors, the efficiency of the intrusion detection system will be affected. Unsupervised anomaly detection methods can detect the anomaly records in unlabled dataset.

传统的面向入侵检测的数据挖掘技术需要在大量的已标记数据集上建立入侵检测模型，数据集的标记过程需要以手工的方式进行，并且如果标记错误，将导致入侵检测系统检测效率的降低。

It analyzed the remote communication means between client and server, the function of data marshal and unmarshal and the data security while communicating.

分析了远程通信中涉及的数据处理功能，包括数据的编码解码、数据的安全以及通信时的通信负载处理。

Cluster analysis, one of the important unsupervised data mining techniques, is being widely used in different domains.

聚类分析是一种重要的无导师数据挖掘方法，被广泛应用于多个领域，其基本思想是根据数据之间的相似性将数据归类，即"物以类聚"。

DHCP snooping captures all the DHCP messages received, normally transmits the trusty messages and discards the untrusty messages.

DHCP窥探处理模块对所有收到的DHCP数据报文进行过滤处理，丢弃不满足窥探安全规则的非法DHCP数据报文，正常转发合法的DHCP数据报文。

The upflow and down flow critical heat flux experimental data of fluid water and freonin vertical tube are analyzed.

分析比较了水和氟里昂介质在垂直圆管内向上流动和向下流动的临界热流密度试验数据(水数据298个，氟里昂数据323个)。

Image data type: In an Access project, a variable-length data type that can hold a maximum of 2^31 - 1 (2,147,483,647) bytes of binary data.

image 数据类型：在 Access 项目中，一种长度可变的数据类型，最多可存储 2^31 -1 (2，147，483，647)字节的二进制数据。

It is often needs process communication and data shared in some computer application system, this paper introduces a process communication and data shard methoed useing VAX/VMS globl section,it is very convenient to use and communicates quickly.

在VAX小型机应用系统中，常常需要多个进程进行数据通讯和数据共享。本文介绍了一种用VAX／VMS全局段实现的进程间数据通讯和共享的方法，具有使用方便、实事性强的特点。

Based on GloPEM datasets, global land cover data and China administrative division vectograph, the terrestrial net primary production and its spatial-temporal change in Shannxi during 1981-2000 were studied.

利用1981~2000年GloPEM光能利用率模型数据、土地覆盖数据和中国县域行政区划矢量数据，对陕西省植被净第一性生产力总量变化、空间分布格局及其变化特征进行了研究。

Compared to state-of-the-art methods based on Kohonen's adaptive-subspace self-organizing map, our method avoids confusion of data in the manifold representation. Each neuron in the network approximately learns the mean vector and principal subspace of the data in its local region. The data representation is therefore more discernable.

与现有的基于Kohonen的自适应子空间自组织映射网络(Adaptive-subspace self-organizing map， ASSOM)方法相比较，本文方法有效地克服了流形表达中出现的数据混淆现象，网络中各神经元渐近学习各自区域内样本数据的平均向量和主元子空间，数据表达更加清晰可辨。

The phylogeny and applied prospect of MES are summarized in the paper. The principle of this system is analyzed from the point of view of acoustics. The surveying and filtering technology of auxiliary parameters, sounding data and the theory of image form, backscatter strength data processing, are researched deeply in the paper. The optimal model of velocity of sound is given. For sound ray tracing, some methods of correction of sound ray curve are developed. At the same time, an ideal model of sound ray tracing is proved and given. The GPS technology is applied for the determination of tide, attitude of vessel. Moreover, some methods are given. As an important topic, the systematic error is discussed in the paper. Some filtering methods are researched in this paper. Based on the current methods of image processing, the procedure and methods are tested and given that adapt to sonar image processing.

本文研究的工作是在总结多波束声纳测深系统的发展历史、应用前景的基础上，从声学角度分析了多波束系统的工作原理；对多波束辅助参数的测定和滤波方法、测深数据的滤波方法、多波束声纳图像的形成机理、图像处理以及最终应用等作了比较深入的研究；得出了适合于多波束精密深度计算的最优声速模型和声线改正模型；提出了 GPS 载波相位定位技术用于多波束辅助参数测量的思想、算法，改善了多波束系统的作业模式；系统地分析了深度数据的误差来源和类型，首次将系统误差作为影响测深精度的主要因素给以研究，并给出了削弱系统误差的方法，提高了深度数据的质量；对多波束声纳图像的形成、处理方法进行了细致的研究，给出了适合多波束图像处理的算法和流程，并从理论和实践上对声纳图像的应用进行了比较全面的研究。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。