共查询到20条相似文献,搜索用时 15 毫秒
1.
As computer networks play increasingly vital roles in modern society, information security becomes one of the most important research issues in the field of information technology. But intrusions cause a serious security risk, how to efficiently prevent and detect intrusions becomes one of hot research problems in the field of information supervision. The traditional process of building the model of intrusion detection is slow, whose cost of research and development is high. However, data mining has unique advantages in acquiring unknown knowledge. So, intrusion detection based on data mining becomes a hot issue. The research background, architectures, techniques, problems to be solved and the future direction are discussed after analyzing current status of network intrusion and situation of R&D on intrusion detection and data mining. 相似文献
2.
WEN Jun-hao~ 《保鲜与加工》2003,(12):92-94
Information available from the Web is unorganized,multi-model and constantly changing and being updated.Therefore,information becomes more difficult to collect ,filter and evaluate. An agent-based framework to support spatial data mining is described. It makes use of three types of agents: Collect agents, Coordinate agents and Query/Mining agents. And then the implementation model is given. 相似文献
3.
基于本体推理和数据挖掘的良好农业规范专家系统 总被引:1,自引:0,他引:1
针对良好农业规范(good agricultural practices,GAP)标准内容复杂,不易被农业生产者准确使用的问题,将本体推理和数据挖掘技术相结合,构建了良好农业规范专家系统,实现标准知识查询和GAP控制点推荐等功能,更好的帮助生产者理解和使用GAP。系统构建过程中,采用本体知识表示方法构建GAP标准知识库,通过解析“良好农业规范生产和认证信息服务平台”的GAP电子检查表记录,对挖掘过程中涉及的关联规则算法进行分析和改进,挖掘分析了用户对控制点使用的偏好。设计了控制点评价模型,实现了GAP控制点的择优推荐。系统基于MVC模式,设计为3层体系架构。通过测试应用,用户能够准确和容易的使用GAP标准。 相似文献
4.
The circumstances of rich data and lack of knowledge lead to the emergence of technology of data warehouse and data mining, and arouse the interests of people in various fields. This paper gives a comprehensive introduction about the basic ideas of data warehouse and data mining, key techniques, and the content of the main researches. This paper have also discussed the characteristics as well as developing potential of the combination of data warehouse and data mining.[WT5HZ] 相似文献
5.
The distribution properties of the normally data and anomaly data in the network connectivity features have huge differences ; therefore, there exist the low rate of detection and false positive rate problem for the traditional classifier which is applied to the network intrusion detection. An adaptive classifier based on the artificial immune cluster is presented. The new classifier adopts multi -granularities idea and it effectively eliminates the inconsistency between the classification algorithm and the clustering algorithm. Through the classification of the data sets in real variety of network intrusion data sets, experimental results show that the classifier has high detection rate and low false positive rate; it has better classification performance and generalization ability than RBF and BP classifiers. 相似文献
6.
基于数据挖掘的生态公益林效益评价决策支持系统研究 总被引:1,自引:1,他引:1
生态公益林效益评价是生态公益林系统管理与可持续发展的重要内容。在生态公益林效益评价的主要内容与价值量评估公式、参数设置及方法的基础上,给出了基于数据挖掘的生态公益林效益评价决策支持系统的功能结构与体系结构;设计了以模型库与知识库为中心,辅以数据库、方法库和计算机网络技术的生态公益林效益评价决策支持系统;利用软件工程方法、J2EE框架技术、MVC设计模式和数据库访问技术实现系统开发。系统利用数据挖掘中聚类分析技术,能进行生态公益林资源分类和关联规则技术挖掘出公益林不同效益指标之间的内在联系。系统具有较强的分析、预测与决策、可视化输出功能,辅助生态公益林管理与决策者提高决策水平和质量。 相似文献
7.
Distributed data mining(DDM) is widely used in industrial,scientific and commercial applications to analyze large datasets maintained over geographically distributed sites,which makes DDM a major research issue on(today's) data mining field.This paper discusses the disadvantages of existing DDM systems,puts forward a service-oriented architecture for DDM on the grid and describe the process of mining under this framework.In the proposed,serviceoriented,cross-platform framework,the mining algorithm and distributed data sets are packed into the Web Service Resources(WS-Resource) respectively,which can cooperate to perform DDM as required dynamically.Finally,a grid based on local area network was built with Globus Toolkit 4.0 and take an example of association rule mining to illustrate how to work with the proposed architecture. 相似文献
8.
WEN Jun-hao~ 《保鲜与加工》2004,(12):111-115
Wavelets have been widely applied in such research areas as image processing, computer vision, network management and data mining. Wavelets have many favorable properties, which are hierarchical and multiresolution decomposition structure, linear time and space complexity of the transformations. The paper presents wavelet application on the algorithms of data mining, in cluding as clustering, classification, distributed data mining, similarity search, approximate query processing, visualization and so on. Finally, the paper concludes by discussing the impact of wavelets on data mining research and outlining potential future research directions and applications. 相似文献
9.
Rough sets is widely applied to dealing with the information under uncertainty. The data mining technology based on the rough sets is being increasingly attached importance by mathematicians and computer scientists. This paper introduces the development process and basic characteristics of rough sets, the application of rough sets theory to the data mining, and the typical system of the data mining based on the rough sets, as well as the directions and fields for future researches. Finally, this paper discusses the necessities through combining rough sets theory and intelligent methods to process information. 相似文献
10.
数据挖掘技术在农业信息网站中的应用研究 总被引:1,自引:0,他引:1
为了在农业网站的海量数据中获取有用信息,运用数据挖掘技术对网站数据进行特征分析,并选择合适的数据抽取算法对网站数据进行抽取,然后根据此模式对农业网站的数据进行了定量、定性分析,从而建立了合适的数据抽取模型。能够为其他的应用提供帮助和服务,并能用于其他的知识应用体系中。 相似文献
11.
《保鲜与加工》2000,(2):20-22
The bi-directional Hybrid Fiber/Coaxial (HFC), which has almost 1GHz frequency bandwidth to transmit information, is the best access mode except Fiber to the Home (FTTH). Initial experiences indicate that real-world HFC networks are susceptible to a variety of radio-frequency impairments that significantly reduce the benefits of using high-speed cable modems. In this paper, the performance of data services in the TCP sub-layer of a HFC network is discussed and an agent server is used to enhance the performance of remote data transmission.[WT5HZ] 相似文献
12.
简要介绍了数据挖掘技术的基本原理,并结合食品品质的特性,从营养品质、感官品质、原料生产、加工工艺、贮藏品质、消费习惯等方面,论述了数据挖掘技术在食品品质研究中的应用,旨在为数据挖掘技术与食品品质提高的进一步结合提供参考。 相似文献
13.
Intrusion detection system is an important component of the computer and information security framework. Its main goal is to differentiate between normal activities of the system and behaviors that can be classified as suspicious or intrusive, and its main challenge is to efficiently detect intrusion detection behaviors for reducing false positive rate and false negative rate. In view of the disadvantages of the existing intrusion detection methods, fuzzy c-means(FCM) clustering method is used to analyze intrusion detection data in order to detect anomaly network behavior patterns. Experimental results on the CUP99 data set data show that this method can not only feasible but also improve the accuracy and efficiency. 相似文献
14.
Survivability is defined as the capability of a system to fulfill its mission, in a timely manner, in the presence of attacks, or accidents. A key characteristic of survivable systems is their capability to deliver essential services in the face of attack, failure, or accident. Thus, it is important to deliver essential services in the survivability network system. Mobile Agent has a character of motion besides reactive, autonomy and oriented-objective as a new technology. By discussing the characters of survivability network system and mobile agent, this paper presents a model for essential services mobility based on mobile agent-MESMMA. This paper mainly focuses on the design of both MESMMA system and mobile agent inner architecture. 相似文献
15.
The paper first introduces principium and the developing actuality of data acquisition system about ICT.The authors then discuss PCI protocol and structure,function and work principle of the PCI bus controller S5933.Base on these,with the circuit design tools such as MAX+PLUSII,PROTEL 99SE and VHDL,etc.,the two types of high speed multi-channel data acquisition system based on PCI bus have been designed by using PASS-THRU channel and FIFO channel of S5933. 相似文献
16.
Mining sequential pattern is an important topic in the data mining research. In this paper, on the basis of recording the Ctid scheme of the set in every frequent set, the authors propose an algorithm named ISP for mining sequential pattern. In the algorithm the items and the sequence are discussed respectively, and the time join method is used to introduce the candidate sets, so the frequent sets can be gotten. The ISP algorithm takes full use of the existing and updated Ctid scheme, therefore the efficiency of the process is increased besides guaranteeing the validity of the algorithm. Comparing with the algorithm named IMSP,more efficient rules are obtained. 相似文献
17.
To the question that a meter is correspond with a set of lead and a sensor,this paper presents a design of data acquisition system for vehicle based on CAN bus.In this way,the combinatorial instrument is only connected by a bus unit.Author introduces the data acquisition structure chart and the CAN interface,analyzes the software by program flow chart,and shows it's application for vehicle virtual instrument.A method of calculating vehicle speed,engine rotate speed and the course of development mileage are also given. 相似文献
18.
The data acquisition and processing system are proceeding towards faster, more powerful, easier to use and more cost effectiveness. This paper discuss the design of the high speed and convenient data acquisition and processing system based on DSP and USB 2.0, and expatiates the principle and method of the virtual instruments system in detail. The system employs an ADS8346 to sample the six channel signals simultaneously with a resolution of 16-bit.It utilizes EZ-USB FX2 as the USB2.0 interface, which can achieve the high speed communication between the host and the system. It uses TMS320VC33 (dsp) as the core chip, which can accomplish the function of the main control and real-time digital signal processing. The system enhances the virtual instruments' advantage more by the combination between software and hardware. 相似文献
19.
This paper presents an integrated approach towards solving the problem of "Gene Prediction".The "Gene Prediction" problem solving undergoes well defined stages starting with a DNA sequence as input and lab treatment and computational analysis go hands in hands throughout the process.Many bioinformatics tools are available for analysis at different stages of "Gene Prediction",but a simplified and integrated approach is needed to support and speed up the task of a life scientist. 相似文献
20.
Association rules mining based on improved traditional market basket analysis is that we introduce the idea of interest-weighed into data processing,normalize the amount of the same kind of commodity purchased by customers in all transactions.According to the demand of users' domain knowledge,we can calculate the interest-weighed threshold,then improve the traditional market basket analysis,association rules are mined much more practical,the workload of(association) rules mining has been reduced,the efficiency and veracity of association rules mining are improved. 相似文献