KDD在高校教育中的应用

以KDD（KnowledgeDiscoveryinDatabase,数据库中的知识发现）理论为基础,深入剖析当前高校教育技术信息化、网络化的状况,介绍了KDD技术发展状况以及数据挖掘在高校教育中的具体应用,归纳总结了KDD技术在现代教学过程中的应用空间及功能,并提出一些思考。     

评测智能化入侵检测方法的样本库分析

对入侵检测评测样本库的生成方法进行了介绍,给出了KDD CUP’99数据集的样本分布,探讨了httptunnel攻击在KDD CUP’99数据集中的分类情况,通过分析KDD CUP’99数据集的特征属性与SNORT特征项的关联,表明了KDD CUP’99数据集作为智能化入侵检测方法评测样本库是公正而合理的．     

一种新型的基于多智能体的KDD系统结构

介绍了数据库中的知识发现（knowledge discovery in database,KDD)及数据挖掘（data mining,DM）研究领域的发展现状，分析了现有DM算法的局限性和KDD过程的复杂性，针对这些，进一步分析了多智能体系统（multi-agent system)可能给KDD系统带来的改善，最后设计了一种分层的，以控制Agent为核心的基于多智能体技术的KDD系统结构。     

基于数据库和知识库的知识发现研究综述

介绍了知识发现技术的总体研究情况,包括KDD的定义、若干基本概念、主要过程和步骤、KDD的分类和主要技术手段、发展趋势以及KDD的主要应用领域.同时也指出了数据挖掘研究的挑战性以及目前的局限性,结合一些新的研究成果,探讨了基于知识库的知识发现(KDK)和数据库-知识库协同知识发现(KDD&K)的理论框架.     

KDD中的数据清理技术研究

数据清理是KDD的首要步骤;没有好的数据环境,就不会有理想的挖掘结果.介绍了数据的一般特征,讨论了KDD中数据清理技术的清除空缺、噪声处理及不一致数据等问题,指出通用性和自适应性差是目前数据清理工具存在的主要问题.     

KDD中的数据清理技术研究

数据清理是KDD的首要步骤；没有好的数据环境，就不会有理想的挖掘结果．介绍了数据的一般特征，讨论了KDD中数据清理技术的清除空缺、噪声处理及不一致数据等问题，指出通用性和自适应性差是目前数据清理工具存在的主要问题．     

优化的小波神经网在异常检测中的应用研究

本文首先介绍了遗传算法的基本原理和KDD99数据集,而后运用遗传算法,PSO算法以及QPSO算法分别对小波神经网络进行优化构建各自的模型,最后通过在KDD99数据集上分别进行各个模型的仿真实验,得出QPSO进化算法的效果明显优于另外两种算法。     

KDD中双库协同机制的研究（Ⅱ）

在"KDD中双库协同机制的研究(Ⅰ)"的理论基础上,实现了对知识库的简约并实现了双库协同机制的两个协调器,从而建立了由KDD融入双库协同机制的新结构模型--KDD*,这是一个在结构和功能上相对于KDD而言的开放的、优化的扩体。基于双库协同机制与KDD*,提出了挖掘关联规则和聚类规则的新算法,充分体现了内在机理研究对主流发展的影响,开辟了一条全新的研究方向与路径。     

基于认知心理特征的协调器及相应KDD过程模型

为提高KDD自认知能力,首次提出了基于认知心理特征的启发协调器和维护协调器.讨论了其设计及相应的实现算法.为实现知识库的自聚焦和实时维护,引入了双库协同机制用于方向搜索和方向挖掘.建立了相应的过程模型KDD*,实验结果显示此过程模型改善了KDD的性能.     

粗集在KDD系统中的应用与研究

论述了粗集方法性质及特点,提出了粗集方法在KDD系统中的应用模型,同时给出了应用这一模型对一个数据库实例进行数据挖掘的过程.另外,从精确性、鲁棒性等方面对KDD系统中的粗集方法的适用范围进行了分析.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the