一个基于数据仓库Web日志的数据挖掘实例

结合实例对商务网站Web日志数据进行挖掘研究,介绍将Web数据转变为数据仓库数据的过程和数据挖掘的方法,文章的最后讲述了可视化数据挖掘技术在表现挖掘结果中的应用.     

基于粗糙集的数据挖掘算法的研究

本文研究了粗糙集理论在数据挖掘中的应用,提出了一种基于粗糙集理论的数据挖掘算法。首先对信息系统的数据加工泛化,构造其二进制可辨矩阵。对矩阵进行化简得到属性约简并生成规则。最后,结合银行申请信用卡的实例利用上述方法进行数据挖掘,消去冗余属性,抽取决策规则。     

论数据挖掘技术在信息分析中的应用

从通用数据挖掘步骤入手,阐述了数据挖掘技术在各信息分析领域中的应用,结合实例探讨了Web数据的特点及实现Web数据挖掘的有效方法.     

数据挖掘技术在医学诊断中的应用

结合医学数据的特点,提出一种基于数据挖掘技术的粗集属性约简算法,并将其应用在医学诊断中.通过具体实例证明了该算法的正确性和有效性,该算法在医学诊断中具有一定的实用价值.     

一种基于粗糙集理论的数据挖掘算法的研究

研究了粗糙集理论在数据挖掘中的应用,提出了一种基于粗糙集理论的数据挖掘算法.首先对信息系统的数据加工泛化,构造其二进制可辨矩阵.对矩阵进行化简得到属性约简并生成规则.最后,结合银行申请信用卡的实例,利用上述方法进行数据挖掘,消去冗余属性,抽取决策规则.     

数据挖掘和神经网络技术的电力工程造价应用

提出了一种采用数据挖掘技术和神经网络方法预测和审查电力工程造价问题的模型,应用数据挖掘技术进行数据预处理、属性优选和聚类得到模糊规则,并用改进的BP(back propagation)神经网络模糊系统构建了电力工程造价的预测方法。通过对某市送电线路历史工程样本训练和实例样本计算分析,得到了较好的计算结果,验证了该方法的预测准确性和收敛性,显示了该方法在电力工程造价预测和审查中的有效性。     

数据挖掘技术在客户关系管理系统中的应用

阐述数据挖掘的概念和主要分析方法，以及数据挖掘技术在客户关系管理系统中的应用，并结合一个客户流失分析的实例说明用于客户关系管理系统的数据挖掘工具的设计和实现。     

分类规则挖掘及其在故障诊断建模中的应用

探讨了数据挖掘技术中分类模型和算法,提出了基于决策树学习的建模方法,通过实例说明了该技术在故障智能诊断中的应用及优点。     

数据挖掘技术在ERP中的应用

数据挖掘是近几年迅速发展起来的技术,主要用于构建企业的决策支持系统。文章根据数据挖掘技术的特点,针对传统ERP系统在决策方面的不足,提出把数据挖掘应用到ERP中去,并结合A汽车公司的ERP系统的实施和运行情况,开展从该系统挖掘数据的可行性研究、数据方法和流程探索,给出决策树挖掘算法检测数据挖掘模型。结果表明,这种数据挖掘是有效的。     

基于密度聚类算法的异常检测

聚类算法通常用于数据的聚类,但只要对算法结果从另一角度进行分析,则可发现它还可以用于异常数据的检测. 首先介绍了数据挖掘中的聚类算法,进而结合具体实例给出应用基于密度的聚类算法DBSCAN进行异常检测的过程,最后指出最终异常数据集的确定还应结合领域专家意见.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

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。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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