计算机科学

董荣胜古天龙蔡国永谢春光

计算机科学. 2002, 29 (1): 1-4.

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In this paper,two documents of “Computing as a discpline”and “Computing Curricula 1991” are briefly introduccd,and their main contributions to the methodology of computer science and technology are porinted out.Then based on the general methodology of sc

Internet发展方向之一：主动网络

陈晓林李冀陆桑璐陈贵海谢立

计算机科学. 2002, 29 (1): 5-7.

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The architecture of traditional networks has limited the development of new protocols and applications and the evolution of Internet infrastructure.The emergence of active networks provides a possible approach.Active network is a programmable network in w

分布式Web服务器技术综述

马晓星

计算机科学. 2002, 29 (1): 7-12.

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With the explosive growth of the World Wide Wed,many popular Web sites are faced with the challenge of the overload of tremendous requests.The best way out is using distributed Web server systems for their good scalability and low costs.In this paper,we t

Internet连续媒体多播技术综述

杨明张福炎

计算机科学. 2002, 29 (1): 13-16.

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Continuous media multicast has been an important component of many networked services such as audio-visual broadcast and video conferencing.The problems of scalability,congestion control,heterogeneity and reliability,which confront Internet continuous med

量子计算机的回顾与展望

苏运霖

计算机科学. 2002, 29 (1): 17-20.

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This paper reviews the develpment of the quantum computers in the last twenty years.Ranging form the beginning of the ides until the deep investigation of its construction,it is said that they are more powerful than their present counterparts:even the fir

基于概念空间的文本语义索引

李源郑毅何清史忠植

计算机科学. 2002, 29 (1): 20-22.

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A new method of using cluster analysis to establish a text semantic indexing based on concept space is presented in order to get the needed information promptly from a great number of text documents.The keywords with high semantic proximiry are direct clu

一种实现搜索引擎个性化服务的方法

谭琼李晓黎史忠植

计算机科学. 2002, 29 (1): 23-25.

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With the rapid increase of the information on the Internet.it is more and more difficult for people to select the needed information.To solve this problem,this paper presents a method to provide individual service in search engine.This method adopts the t

大规模中文搜索引擎的架构和设计技术

王剑邵志清

计算机科学. 2002, 29 (1): 26-29.

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In this paper,we discuss the design and implementation of a large-scale Chinese search engine,and briefly describe some key techniquse such as Chinese segmentation,ranking of Web pages,link graph,index of large-scale Web text,Web storage system.Finally,a

在线零售站点的自适应和商业智能的发现

王实高文郎金文李锦涛

计算机科学. 2002, 29 (1): 30-35.

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There are two important problems in online retail:1)The conflict between the different interest of all customers to the different commodities and the commodity classification structure of Web site;2)Many customers will simultaneously buy both the beer and

基于关联分析的粗粒度级个性化信息挖掘

李常青唐世渭李红燕

计算机科学. 2002, 29 (1): 36-38.

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The data mining technology is used here to provide the thick-scale personalized service.In fact,the building of user''''''''s personal information space can lead to classfied indexes which will provide the favorable personalized service with greatly reduc

基于移动Agent及RDF的网络数据挖掘系统体系结构

吴跃王军周明天王湖南

计算机科学. 2002, 29 (1): 39-41.

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In this paper,a system architecture of data mining in network-based on the technology of Mobile Agent and RDF is presented.This system architecture provides a standrad and uniform structured data-platform for the concrete data-mining application.Mobile Ag

信息Agent的体系结构与行为设计

郑淑丽杨敬安骆祥峰

计算机科学. 2002, 29 (1): 42-43.

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With the rapid development of Internet,information Agent aroused a great interest with its potential power.Various information agents were made for different targets and were implemented in different means.To facilitate open system interoperability of aut

ICENT汉英机译系统中的语义模型

齐璇陈火旺

计算机科学. 2002, 29 (1): 44-46.

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Semantic analyzing is very important in MT system.The usage of semantic knowledge can help to disambiguation.Now semantic knowledge is always used to sense disambiguation.This paper presents a semantic hierarchy which contains semantic primitive,sense and

K特征线法在文本分类上的应用

杨昂

计算机科学. 2002, 29 (1): 47-48.

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A novel pattern classification method,called nearest feature line(NFL) has been proposed.In this paper we propose a novel classification method,called the k nearest feature line(kNFL),for text classification and approach it to application.The experiment r

MPEG—4人脸动画技术和一个基于MPEG—4的人脸动画系统的设计

王洵董兰芳陈国良许胤龙

计算机科学. 2002, 29 (1): 49-52.

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Being the first object-based multimedia compression standard in the world,MPEG-4 defines facial animeation tools.This paper presents MPEG-4 facial animation techniques,including neutral state facial model,facial animation parameters and facial defintion p

基于ICMP协议的指纹探测技术研究

孙乐昌刘京菊王永杰陆余良

计算机科学. 2002, 29 (1): 53-56.

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To obtain the OS''''''''s type and version used by remote host on the Internet is very important on studing the network security.The fingerprints detection technology is an effective solution method to this problem.In this article,the principium,method an

小波图像编码器研究进展

周兵李波李炜

计算机科学. 2002, 29 (1): 57-61.

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The research of wavelet coders has been being active since Mallat found the fast algorithm of wavelet transform.The novel compression standards JPEG2000 and MPEG-4,both using wavelent transform,will be finished in this year.There are two main factors whic

基于图像小波变换的自适应数字水印

王卫卫杨波宋国乡

计算机科学. 2002, 29 (1): 62-64.

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An image adaptive digital watermarking algorithm based on discrete wavelet transform(DWT) is proposed.With wavelet transform,the image is decomposed into subband coefficients corresponding to different spatial position and frequency,among which a tree str

图像检索中一种新的相关反馈机制

曹奎冯玉才王元珍

计算机科学. 2002, 29 (1): 65-68.

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Content-based image retrieval systems require the development of relevance feedback mechanism to facilitate the human-computer interaction.In this paper,we propose a grey approach to relevance feedback,where the GRA is used to describe the feature distrib

0ntology建模方法研究

徐振宁黄凯歌张维明陈文伟

计算机科学. 2002, 29 (1): 68-71.

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The ontology model of a certain domatin is an effective approach for the intercommunion between people form the different domains,the communication and interoperation among agents,and the share and reuse of the software.But the lack of formal analysis too

日志文件系统在嵌入式存储设备上的实现

郑良辰孙玉芳

计算机科学. 2002, 29 (1): 72-74.

摘要 ( 87 )

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In embedded systems,unexpected power-off often causes the corruption of the file system and the lose of data.It is necessary to develop a special kind of file system to prevent such corruption.As a kind of journaling file system specially for embedded mem

Java鉴别和许可服务机制的研究

舒昶吕述望

计算机科学. 2002, 29 (1): 75-77.

摘要 ( 80 )

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Java is a Net-Oriented computing technology.When it is applied to a distributed system,we must think over the security of the distributed system.If the system contains some parts that are potentially hostile to each other,the service login and location mu

建模语言及其研究进展初谈

戴挂兰

计算机科学. 2002, 29 (1): 78-81.

摘要 ( 76 )

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Based on the common features of modeling languages,the paper attempts to present a definition,description content,application domains for modeling languages.In terms of their derivation and foundation,modeling languages can be divided into four kinds:form

统一软件开发过程述评

麻志毅

计算机科学. 2002, 29 (1): 82-86.

摘要 ( 59 )

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The Unified Software Development Process(USDP),published by a few masters in the software engineering field and Rational Software Corporation,and Supported by OMG,is attracting wide attention in the area of software engineering.After summarizing USDP,the

面向agent软件工程

吴元斌石纯一

计算机科学. 2002, 29 (1): 87-89.

摘要 ( 82 )

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Agent-oriented techniques represent a new means of analyzing,designing and building complex software systems.They have the potential to significantly improve current practice in software engineering.In this paper some important techniques and methods for

随机算法的一般性原理

贺红马绍汉

计算机科学. 2002, 29 (1): 90-92.

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The last decade has witnessed a tremendous growth in the area of randomized algorithms.During this period,randomized algorithms went form being a tool in computational number theory to finding widespread application in many types of algorithms.Two benefit

MPI（消息传输界面）的标准化与我国的对策

苏运霖

计算机科学. 2002, 29 (1): 93-95.

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The motivation of posing the message-passing interface and thereby the development of the standardization of it are surveyed in the paper.Then the goals and the contents are presented.Finally the paper discusses bow would china deal with the issue.

非精确任务集的容错单调比率调度

陈宇熊光泽杨春

计算机科学. 2002, 29 (1): 96-98.

摘要 ( 64 )

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Meeting deadline and geting high throughput are the main objective of real-time system.They are both important,but sometimes incompatible,such as reserving resource for fault tolerance.We describe a new scheme,through making use of the fualt-tolerant rate

用内核ACL增强LINUX的安全性

张志文周明天

计算机科学. 2002, 29 (1): 99-100.

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As data sharing is growing continuously,this is constantly increasing the vulnerability of the operating systems.So the need for secure operating system is urgent.ACL is one of the basic characters of secure operating system.This paper describes how to en

面向Agent与面向对象

齐艳平李胜红王钰龚传信

计算机科学. 2002, 29 (1): 101-102.

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The paper discusses Agent/Object、Oriented-Agent Modeling/Oriented-Object Modeling and Oriented-Agent Programming/Oriented-Object Programming,and compares with the two ones.

对“货郎担问题”的深入解析

汪林林张林

计算机科学. 2002, 29 (1): 103-104.

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The Traveling Salesman Problem(TSP) is one of the most difficult problems that many scholars all over the world are studying.This paper points out the disparity between the definition and the classical solution of TSP and its practical applications,and th

Web应用开发的两层体系结构建模

杨卫东施伯乐

计算机科学. 2002, 29 (1): 105-108.

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With the rapid development of Internet,the Web has evolved into a main platform for delivering all kinds of applications.The complexity of Web applications requires more systematic method and model to support it.This paper describes development process of

一个面向Internet数据管理的系统模型

韩立新恽爽陈道蓄谢立

计算机科学. 2002, 29 (1): 109-112.

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Since nowadays there are a great deal of semistructured data on the Internet and heterogeneous data integration systems,in-depth research on this kind of data is very important.In this paper,we propose a system model.Webmanager,for Internet information ma

架构一个企业的分布式服务群

胡永平冯雁王泽兵

计算机科学. 2002, 29 (1): 113-114.

摘要 ( 62 )

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The Development of the Internet raises enterprises''''''''requirements on Information Exchange.To construct a powerful intranet with proper architecture is the key for enterprise to realize Information Exchange.This article describes a distributed service

XML数据库管理系统研究

王照岳孙建伶董金祥

计算机科学. 2002, 29 (1): 115-118.

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XML is not only an intermedis between the WEB and DBMS.W3C has defined many database characters for XML,such as schema,algebra,etc,so we believe that XML will become a new data model of database,and it is necessary to apply traditional DBMS techniques to

一种检测多语言文本相似重复记录的综合方法

俞荣华田增平周傲英

计算机科学. 2002, 29 (1): 118-121.

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Detecting approximate duplicate records in database is a key problem related to data quality.In this paper,we present a synthetical approach for recognizing clusters of approximately duplicate records of multi-language data.The key ideas are:(1) an effici

一个基于移动Agent防止双重消费的离线电子支付模型及协议

温涛王济勇刘积仁

计算机科学. 2002, 29 (1): 122-125.

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Because it is quite unsatisfactory that in anonymous off-line payment schemes the multiple spending of coins can only be detected but not prevented,a model and protocols of off-line electronic payment system preventing double-spending and based on Mobile

一种基于Web的多传感器数据融合系统模型

何佳洲陈世福

计算机科学. 2002, 29 (1): 126-128.

摘要 ( 60 )

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With the development of the broadband network technology,there is a need for information fusion anyone,any time and anywhere.The data fusion systems(DFS) based on client/server model have an ability to process real time data better with high security,but

高速网络多媒体传输中自适应QoS保证问题

林刚杨学良

计算机科学. 2002, 29 (1): 128-131.

摘要 ( 123 )

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Many present multimedia applications over High Speed Networks use continuous mdeis such as audio and video.Some distributed multimedia applications now have the ability to abapt to fluctuations in the network by adjusting temporal and spatial quality to a

多层网络抗毁机制的研究

石兵闵帆周明天李兴明

计算机科学. 2002, 29 (1): 132-134.

摘要 ( 67 )

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本文对基于共享备用容量的多层网络抗毁机制进行了研究，提出基于上层通路恢复的下层恢复策略和整数规划模型，这种方式可以有效地解决备用容量在上下层间的共事和动各移动问题，模型的实验数据证明了它的有效性。

分布式智能网中一种实用的负载控制模型

刘彦明马玉祥易克初柯国富

计算机科学. 2002, 29 (1): 135-137.

摘要 ( 78 )

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The chief bottleneck is the capability that SCPs deal with services and communicate with SSPs in traditional Intellingent Networks(IN).As technologies evolution,researchers present the distributed IN(DIN) for overcoming the bottleneck problem.Based on DIN

电力线计算机网络MAC层最佳帧长度分析及仿真

黄荣辉周明天曾家留

计算机科学. 2002, 29 (1): 138-139.

摘要 ( 59 )

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This paper briefly describes the current research situations of MAC protocaol of power-line computer network in the world and analyzes the key problems of power-line as a kind of communications media.It also gives out the math model of optimum dada frame

XML技术在移动办公系统中的应用研究

吴海涛潘金贵

计算机科学. 2002, 29 (1): 140-142.

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With the rapid development of the technology of the mobile communication and the Internet,mobile office is a new technology in the application of the network.This parer describes the design and implementation of the mobile office software based on XML and

基于网络通信的会话窃取的研究

许力阳王康

计算机科学. 2002, 29 (1): 143-144.

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This article describes an attack against the TCP,which allows crackers to break the session of both client and server and to redirect the TCP stream to manipulate the system as a legal user.The principle of the attack is analyed,and TCP protocol and some