基于迁移学习的企业网络舆情危机预警研究

针对传统企业网络舆情危机预警方法存在预警准确性较低的问题,提出基于迁移学习的企业网络舆情危机预警方法。利用智能元搜索技术对企业网络舆情信息进行分类,通过迁移学习分析网络舆情负面信息数据,提取网络舆情危机特征,识别网络舆情危机,并确定预警等级,实现危机预警。实验结果表明,该方法的预警性能最好,优于对照组。     

基于可变模糊集理论的舆情指标预警模型研究

通过分析网络舆情影响因素,建立网络舆情指标体系.根据可变模糊理论构建网络舆情危机模型,采用类别特征值规则取代最大隶属原则的评价方法进行定量的评判,从而得到网络舆情的危机预警等级.结合具体实例对该模型分析,结果证明了其合理性.     

基于观点树的网络舆情危机预警方法*

对初始情感种子集预处理,增加网络情感词汇、过滤部分特征词,采用改进逐点互信息—信息检索方法对特征词进行情感倾向性计算,实现对网络论坛网帖中网民观点极性和观点强度的挖掘,进一步实施网民观点属性挖掘;构建基于三粒度挖掘结果的观点树,建立基于观点树的网络舆情危机预警架构。通过实验验证,该方法能够对网络舆情危机作出预警判断。     

内网舆情信息监测系统研究与设计

随着网络的普及,网络舆情的信息丰度呈现爆炸的态势．在述种情况下,只有采用计算机才能自动地对网络舆情信息进行分析整理和数据挖掘,以利于建立起全面、有效、快速的舆情监测预警机制．本文首先对内网舆情信息监测系统的需求进行分析研究,在比基础上给出了内网舆情信息监测系统组成方案,并对内网舆情信息监测系统软件结构和各子系统工作流程进行设计。     

基于语义模式与词汇情感倾向的舆情态势研究

针对互联网上的舆论信息传播速度快,对社会造成巨大影响这一问题,社会管理者应该进行及时的舆情分析,从而进行有效控制和引导,避免形成更大的社会影响和危害.为了从网络信息中分析网络舆情的发展态势,将文本情感分析技术应用于网络舆情研究.针对网络舆情的话题评论,采用语义模式和词汇情感倾向相结合的方法,并形成了一种判定算法,该算法比较全面地判定话题评论的情感倾向性,把握网络舆情的正面或负面导向性.实验结果表明了该方法的有效性和准确性.     

我国网络舆情安全评估指标体系的构建研究

近几年,国内通过网络爆发的重大舆情事件激增,使得网络舆情安全监管和预警形势极为严峻,引起了国家的高度重视。构建网络舆情安全评估指标体系能为网络舆情分析及预警技术与应用系统的实现和应用提供系统化、整体性的基础性平台。本文将＂舆情＂这一通过社会层面定性描述的概念与＂网络＂这一通过技术层面定量表征的概念有机地契合,深入挖掘互联网上所体现的舆情演变规律,从而构建了网络舆情信息在传播扩散、民众关注、内容敏感性、态度倾向性四个维度的安全评估指标体系,实现了对某一具体的网络舆情信息的安全态势评估。     

突发事件网络舆情传播与预警模型研究

随着网络的普及使用,我国网民数量不断上升,网络舆情无论是内容还是传播的速度都在不断攀升,突发事件 网络舆情的预警与控制,已经成为一道必须正视的问题。由于突发事件有其特定的生命周期,突发事件网络舆情也有其时段 性,要根据舆情传播的变化,注重对突发事件网络舆情传播的管控,避免群体极化现象和舆情的多级衍生。本文主要从构建网 络舆情研判指标体系,构建网络舆情预测模型和突发事件网络舆情预警措施三个方面进行了简要分析,对突发事件网络舆情 传播与预警模式进行研究。     

基于改进Apriori的网络安全感知方法

针对网络安全态势评估过程中存在数据源单一、实时性不强、准确率不高的问题,提出一种基于改进关联规则算法(Apriori算法)的网络安全态势感知方法;通过对数据的分析,发现在网络中存在关于安全态势的关联规则;通过网络攻击影响熵值序列的分析,对关联规则进行分类为空间正常和异常空间,进而对关联规则进行聚类分析;根据聚类后的规则划分网络安全态势等级;将改进后的算法应用到网络安全态势感知当中,实验结果表明,该方法满足了网络安全危险预警和实时监控的要求;改进的算法用于安全态势感知是可行的、有效的。     

基于多级模糊综合评判的网络舆情安全评估模型研究

在根据传播扩散、民众关注、内容敏感、态度倾向四个维度建立起网络舆情安全评估指标体系后,需要把各个评估指标以适当的方法进行综合评估,从而得出最终的安全评估结论。本文采用多级模糊综合评判的方法建立了安全评估模型,实现了网络舆情安全态势的客观评估,量化得出＂网络舆情安全指数＂,从而帮助国家和舆情监管相关部门发现可能给国家舆情安全带来灾难性后果的负面舆情信息,并及时做出预警,为其采取相应的疏导、抑制、治理等方案提供科学的依据,防范负面网络舆情危害社会于未然,促进国家网络舆情向着和谐、稳定的方向发展。     

论网络舆情监测系统的基础设计

网络舆情监测系统实时定向采集主流权威有影响力的微博、新闻、论坛、博客等网站信息,抽取舆情要素,发现舆情热点,挖掘舆情敏感话题,及时预警,追踪发展情况,并研判舆情态势。本文就此进行简要论述。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.