数据挖掘中信息颗粒及其构造

为在海量的数据仓库中搜索稳定的、有意义的且易于表示的知识模式，简要介绍了数据挖掘的任务、分类及智能计算方法的作用，提出了信息颗粒的概念，信息颗粒的引入，使人们更容易地理解各种复杂数据所隐含的意义，对数据进行模块化处理，从而降低运算的复杂性，起到信息综合、信息压缩的作用，另外，根据模糊性理论构造和管理信息颗粒，用模糊集对信息颗粒进行量化表示，计算信息颗粒度，针对具体问题根据兴趣度灵活而有效地选择信息粒度，使它们有效地覆盖所研究的整个数据领域，最后，讨论了颗粒间的各种关系，并人出了信息颗粒在数据挖掘中的进一步作用。     

数据挖掘中信息颗粒及其构造

为在海量的数据仓库中搜寻稳定的、有意义的且易于表示的知识模式 ,简要介绍了数据挖掘的任务、分类及智能计算方法的作用 ,提出了信息颗粒的概念 .信息颗粒的引入 ,使人们更容易地理解各种复杂数据所隐含的意义 ,对数据进行模块化处理 ,从而降低运算的复杂性 ,起到信息综合、信息压缩的作用 .另外 ,根据模糊性理论构造和管理信息颗粒 ,用模糊集对信息颗粒进行量化表示 ,计算信息颗粒度 ,针对具体问题根据兴趣度灵活而有效地选择信息粒度 ,使它们有效地覆盖所研究的整个数据领域 .最后 ,讨论了颗粒间的各种关系 ,并给出了信息颗粒在数据挖掘中的进一步作用 .     

基于粗糙信息颗粒的数据挖掘方法研究

大型的数据库和数据仓库中的数据往往是有噪声和不一致的,应用经典的粗糙集理论对其进行数据挖掘处理时,效果不够理想.引入信息颗粒的概念,给出了属性子集引导的信息颗粒的构造方法及基于信息颗粒的知识描述,并应用粗糙集的扩展模型讨论知识的粗糙度问题,提出了基于粗糙信息颗粒的属性约简算法,该算法在给定最小置信度阈值的情况下,可实现对不一致数据集的简洁知识提取.图1,表2,参8.     

基于S-粗集信息的隐藏与还原

运用S-粗集的属性颗粒特征对信息进行加密,并验证了它的合理性,从而达到信息的保密性,成为一种更为有效的加密方法。     

信息系统函数依赖的信息颗粒原理与计算

提出了一种利用信息颗粒的位表示(bit representations)来分析信息系统函数依赖的新方法。研究了信息颗粒原理、粒化计算和面向机器的数据挖掘模型，利用位表示阐述了信息系统函数依赖、恒等依赖、部分依赖的判定原理，得出了与函数依赖相关的命题，并用相应的算法验证了所提方法。该方法可以快速判定和度量信息系统的函数依赖关系，对于信息颗粒采用其位表示，使得数据格式更接近机器的内部表示，且能够直接挖掘信息系统所蕴涵的模式。     

论信息意识与信息服务

本文分析了图书馆读者少的原因有两方法：一是读者自身信息意识较低；二是图书馆信息服务开展不够，由此探讨信息意识与信息服务的关系，并就信息意识的培养和提高图书馆信息服务质量提出几点措施。     

高校健美操教师信息素养的影响因素及对策研究——以苏南5城市20所高校为例

采用文献资料法、问卷调查法、访谈法等多种研究方法,对影响健美操教师专业信息素养和科研信息素养的因素进行调查与分析,并提出提高普通高校健美操教师信息素养水平的发展对策.     

我国体育信息网络化评价指标体系研究

运用文献法,逻辑法,制定我国体育信息网络化水平测算指标的原则。结合体育信息标准化的主要内容及体育信息交换标准,对我国体育信息网络化评价指标体系进行较为系统的归纳。     

对有关信息法的一些认识

本文对信息法制定应解决的问题、信息法的立法原则、调整对象、信息法应成为一个独立的部门法等有关问题谈了自己的认识.     

基于ESMD的浓相气力输送颗粒静电信号分析及速度测量

针对浓相气力输送中颗粒相的复杂流动特性,采用极点对称模态分解方法分析静电环状和弧状阵列信号.研究了多种工况下输送系统启停过程和过渡过程中不同分解模态静电信号的能量和频率分布信息特性,提出了一种新的浓相气力输送颗粒速度测量方法,并进行实验验证.研究结果表明,环状电极静电信号的能量分布信息能够用来判断输送系统在启停过程中颗粒流动的稳定性;弧状电极静电信号的能量信息可用来判断管道内颗粒相的分布情况.文中提出的静电信号瞬时频率颗粒速度测量方法相比于空间滤波测速法,其特征系数的相对标准差至少降低58%,表明该速度测量方法可以稳定并准确测量浓相气力输送颗粒速度.     

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.     

A computer generator for randomly layered structures

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

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.     

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.     

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

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to