模糊聚类在客户关系管理中的应用

企业积累了大量的客户消费数据,如何从大量的数据中发现用户的消费模式,对企业的营销策略具有重要的指导意义,数据挖掘技术正是可以从大量的数据中挖掘出对企业决策有价值的信息。针对客户数据的特点,提出一种基于Kruskal算法的最小生成树模糊聚类算法KTFC,并将其应用在客户关系管理中。实验证明,该模糊聚类算法可以有效地对企业客户群进行分类,并分析出每类客户的特点,动态地选取不同的A值可以获得不同的聚类结果,大大地提高了聚类的灵活性。     

多层次科技人才综合测评的研究分析

本文着重对人才的评价维度和优化聚类进行分析研究,并首次系统地采用心理测试方法对我国航空、航天、国防及国家有关高科技部门的近500名科技人才进行多角度测试。通过系统的心理测试,每个被试得到73个测试评价结果。为了简化这些结果,本文采用主因素分析进行降维处理后,将73个维度降为8个维度。在此基础上,对这些被试者进行聚类分析,将他们分为四大类具有不同特征的群体。最后,根据降维和聚类结果对多层次科技人才进行了综合评价与分析。     

基于各维度分段优化的聚类中心优化选择方法

针对K-Means算法中对初始聚类中心进行随机选择并未达到理想优化的情况,提出一种改进的初始聚类中心选择算法。改进算法首先将原始数据进行预处理并计算各维有效数据的最大值和最小值,然后利用各维有效数据的最大值和最小值进行数据分段和初始聚类中心选择,最后采用VS集成开发环境进行建模。采用遵义医学院2010级的学生计算机考试成绩数据对模型进行仿真,仿真结果显示聚类挖掘性能相对K-Means算法较高,证明改进的初始聚类中心选择算法可以提供精确的聚类挖掘结果。     

校银支付系统在校园一卡通中的应用

校园一卡通将管理、生活、消费、身份认证等多种功能集中于一体,提高了师生校园生活的效率。通过对校园一卡通电子帐户应用分析,从财务管理要求,对校园一卡通电子帐户的应用拓展和财务处学生缴费管理进行融合,设计并实现了校园一卡通电子帐户的网络化通用收缴费系统,实现财务收缴费项目的无现金操作的技术应用。     

海量数据信息中的迭代聚类过程的改进研究

对海量数据信息进行迭代聚类能够为数据挖掘提供准确的依据,具有重要的应用价值。传统算法对于初始参数的选取过于敏感,从而降低了迭代聚类的准确率。提出基于并归聚类的海量数据信息中的迭代聚类方法。采用离差隶属度进行数据信息聚类中心的计算,确定数据信息的聚类中心;采用类间距离作为并归聚类判别的标准,用于判定数据信息特征与聚类中心的距离;对海量数据信息特征与聚类中心的计算结果进行归类处理,直至所有的数据信息的聚类中心都结束并归,从而获得准确的迭代聚类结果。仿真实验结果表明,改进算法能够提高海量数据信息中的迭代聚类结果,效果令人满意。     

数据挖掘技术在ETC运营管理中的应用

本文将数据挖掘聚类分析技术融合到ETC运营管理过程中,分析了ETC交易数据三种关键的特征数据并构建了数据模型,采用轮廓系数对聚类结果进行科学评估。在聚类分析结果的基础上,对ETC用户进行二维分类,提出ETC的推广营销和ETC系统维护管理的方法和建议。     

基于智慧校园的学生管理系统的探究

现代信息和互联网技术的飞速发展使得智慧校园逐渐成为高校进行教育理念变革和学生管理方法创新的重要途径之一。如何有效利用智慧校园加强高校学生管理工作,提高管理的效率和科学性,成为当前高校管理者面临的一大全新课题。本文通过对智慧校园的介绍,分析了目前高校在智慧校园建设中学生管理工作面临的困境,最后针对性地提出了智慧校园建设过程中如何有效加强学生管理工作,旨在为完善基于智慧校园的学生管理系统提供有益参考和借鉴。     

数据挖掘中模糊C聚类算法的寻优能力优化

随着数据库技术的不断发展,现有的聚类分析算法已经无法满足数据挖掘的聚类分析的需求。本文主要针对传统的模糊C聚类算法,将其中存在的问题进行改进,并在核函数和权值优化的基础上,提出模糊C聚类算法。首先对模糊C聚类算法的特征权值进行优化,然后引入核函数的概念,对模糊C聚类算法的寻优过程进行改进。仿真验证得到的结果是,本文所提出的模糊C聚类算法,能够在核函数和权值优化上有更好和更加稳定的聚类。     

利用词嵌入模型实现基于网站访问日志的专利聚类研究

[目的/意义]专利信息是人类科学技术进步的结晶,随着社会的发展,专利信息将为促进科技创新发挥日益重要的作用。利用聚类技术可以将海量专利信息进行自动分类,在实现信息有序归并管理的同时,有助于用户高效而全面的获取相关技术领域中的集成专利信息,具有重要的现实意义,传统聚类研究方法效率与准确度存在不足。[方法/过程]本文通过对专利信息服务网站（中国科学院知识产权网）访问日志数据的清洗与分析,生成专利信息点击序列,基于深度学习词嵌入模型,设计了PatentFreq2Vec模型,计算得出专利关联信息。[结果/结论]利用PatentFreq2Vec模型分析计算访问日志数据,能够得到关联专利信息,实现专利聚类,且聚类准确度高于传统方法。     

引入或然状态优化控制的网络文本特征挖掘

引入或然状态指数矩阵,对网络文本特征进行指数分离处理和挖掘优化导向性控制,提出一种引入或然状态指数矩阵优化控制的网络文本特征导向性挖掘新技术。对具有或然性的文本数据进行分离修补导向性挖掘聚类,在文本数据择取过程中,将不同文本分量元素进行初始化倾向性分类处理,由指数矩阵确定元素属性类别概率,从而确定多个导向性聚类中心,从而实现了对或然网络文本特征的准确挖掘。仿真实验表明,新的挖掘技术能有效提取到模凌两可的或然性弱聚类导向性分类特征,数据挖掘准确率达到99.97%,而传统方法是根本无法对这类文本特征进行有效挖掘,展示了算法的优越模糊数据处理价值。     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

To serve and promote science development via innovation

CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

The Information Environment and Universal Service

This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.