用户关系特征对微博转发行为影响分析研究

转发是微博提供的一个信息传播的机制,用户能够将关注者发布的有趣微博转发到自身平台,然后分享给追随者,是微博网络中信息传播最重要的功能。对于微博网络存在的不同类型连接关系,首先提取出相关特征,如同质性、微网络结构、地理距离以及用户性别等,用于识别连接关系的不同类型,然后采用Log-linear模型来拟合各个特征间系数,基于这些系数对微博用户转发行为形成的内在原因进行了分析。     

浅析实名制微博客之隐私政策

构建互联网法治不仅需要相关法律制度的健全和完善,更要求互联网企业的严格自律和积极措施。隐私政策作为实名制微博客法律保护体系的重要部分,是网络服务提供者履行自律责任的外在表现,目前仍存在较多问题和缺陷,亟需深入研究和不断完善。     

基于微博的用户社区网络挖掘分析

以新浪微博为研究平台,随机获取微博用户数据作为研究样本,通过共链关系构建社会网络,利用聚类分析方法对样本进行微博关注好友的网络群体分析,网络内部子结构分析和个体角色分析。进而从微博用户好友数据中挖掘关注对象的特征和关注对象间的关联特征,并对改进微博用户关注好友的推荐和信息推送提出一些建议。     

流量业务用户感知模型建立及工程化应用

用户感知是终端用户对设备、网络和系统、应用或业务的质量和性能（包括有效性和可用性等方面）的综合主观感受,是终端用户对移动网络提供的业务性能主观感受.它以接近量化的方法来表示终端用户对业务与网络的体验和感受.本文通过层次分析法,建立QoE的评估模型.给出QoE评分的数学公式.并通过一个实例,示范评估过程.     

面向用户属性的RBAC模型

在传统的RBAC模型中,用户与角色间的关系是静态对应的.针对这一缺点,提出了一种面向用户属性的RBAC模型,在原有RBAC模型的基础上添加了属性集合和约束.在该模型中,根据用户属性动态构造用户与角色的关系,重点讨论了该模型的特征与约束,最后说明了该模型的访问控制实现过程.与普通RBAC模型相比,该模型可以动态根据用户属性分配角色.     

User Satisfaction Survey of Ask-A-Question Service at the Internet Public Library

ABSTRACT

To assess satisfaction of the Internet Public Library's Ask-A-Question service, we conducted a three month user survey between February 12 and May 11, 2004. Most respondents were highly satisfied with the answers they received. Although only a few respondents expressed dissatisfaction with the service, we conducted failure analysis on those transactions. The conclusion includes suggestions for improving the IPL digital reference service.     

User evaluation: Synthetic talking faces for interactive services

facial animation (FA) will be. We have undertaken experiments on 190 subjects in order to explore the benefits of FA. Part of the experiment was aimed at exploring the objective benefits, i.e., to see if FA can help users to perform certain tasks better. The other part of the experiment was aimed at subjective benefits. At the same time comparison of different FA techniques was undertaken. We present the experiment design and the results. The results show that FA aids users in understanding spoken text in noisy conditions; that it can effectively make waiting times more acceptable to the user; and that it makes services more attractive to the users, particularly when they compare directly the same service with or without the FA.     

A model of job satisfaction for collaborative development processes

Modern software development relies on collaborative work as a means for sharing knowledge, distributing tasks and responsibilities, reducing risk of failures, and increasing the overall quality of the software product. Such objectives are achieved with a continuous share of the programmers’ daily working life that inevitably influences the programmers’ job satisfaction. One of the major challenges in process management is to determine the causes of this satisfaction. Traditional research models job satisfaction with social aspects of collaborative work like communication, work sustainability, and work environment.This study reflects on existing models of job satisfaction in collaborative environments, creates one for modern software development processes, and validates it with a retrospective comparative survey run on a sample of 108 respondents. In addition, the work investigates the impact on job satisfaction and its model of the agile practice of Pair Programming that pushes job sharing to the extreme. With this intent, the questionnaire also collected feedback from pair programmers whose responses were used for a comparative analysis. The results demonstrate that Pair Programming has actually a strong positive effect on satisfaction, work sustainability, and communication.     

User satisfaction aware routing and energy modeling of polymorphic network on chip architecture

In mobile devices, multiple applications contend for limited resources in the underlying embedded system framework. Application resource requirements in mobile systems vary by computation needs, energy consumption and user interaction frequency. Quality of service (QoS) is the predominant metric of choice to manage resources among contending applications. Resource allocation policies to support static QoS for applications do not reflect the changing demands of the user in contemporary network on chip (NoC) based embedded architectures. User satisfaction with the user interactions and user interface design ought to be the primary design driver. Some recent research has integrated a saturating, non-linear user satisfaction function in the application thread scheduler. The application and operating system level user satisfaction research assumes that the throughput of inter-thread edges is limited only by the computational constraints of the nodes. With NoC, however, NoC resource allocation policies play an important role in determining the inter-thread communication flow’s throughput and the resulting application level user satisfaction. In this paper, we filter down the user satisfaction from an application layer attribute to a router level attribute to improve the resource and energy utilization for routing in order to leverage the user satisfaction at the application and system level. We demonstrate that this technique improves the user satisfaction of audio (MP3) application by 10% while maintaining the user satisfaction of video (MPEG-2) application. Experiments also show that a fixed energy source can be extended for an average of 18% of the time using the NoC user satisfaction based energy optimization proposed in this research.     

个性化信息检索系统中用户兴趣模型的建立

个性化检索系统通过收集和分析用户信息来学习用户的兴趣和行为,从而实现对用户的个性化的信息推荐服务。而用户兴趣模型正是用户和兴趣的信息模型,用户兴趣模型直接影响到个性化的信息服务。     

An experimental evaluation of abbreviation schemes in limited lexicons

Abstract

Five abbreviation schemes (simple truncation, vowel drop, minimum to distinguish, phonics and user denned) were analysed for learning, encoding and decoding. Forty subjects were each tested on two schemes, using two different 20 word lexicons. Simple truncation was the easiest to learn, based upon a trials to criteria experiment. Using a modified tachistoscopic display, simple truncation was the best for encodability. Either vowel drop or phonics was the best scheme for decoding. It appears that information content is important in decoding, but not in encoding.     

模糊综合评价模型在网络系统安全性评估中的应用研究

本文研究了运用模糊综合评估模型对网络系统安全性进行评估的应用方法,较好地解决了评估的模糊性,也在一定程度上解决了从定性到定量的难题。     

个性化服务中的用户建模技术

作为个性化服务的基础和核心,用户建模的质量直接关系到个性化服务的质量.文章将用户建模的过程分为5个关键模块:输入、输出、建模时间、建模的对象、建模算法,并围绕这5个方面,对用户建模当前的研究现状、所面临的关键议题进行了系统的论述.其中,输入模块为用户模型的建立提供了必要的数据源,输出模块则描述用户模型的表示方式,建模时间描述了建模的时间长度和更新方式,建模的对象描述了对谁进行建模,建模算法则描述了几种典型的建模方法.最后对用户建模的技术发展进行了展望.     

支持界面生成的扩展对象模型和交互模型

基于模型的用户界面分析和表达是实现界面工程设计的出路所在。FMP是一个涵盖需求、结构和实现的界面模型。该文重点讨论了FMP的内在模型Model部分和对界面实现的作用。指出内在模型由参与界面操作的扩充对象模型和它们的交互模型构成。对象模型给出了界面的局部布局。交互模型给出了界面的功能和对象构成以及它们之间的交互关系,在界面模板的支持下,可以给出界面的宏观布局并支持界面的自动生成。     

Customer satisfaction evaluation method for customized product development using Entropy weight and Analytic Hierarchy Process

Providing customized products with high customer satisfaction (CS) has become an inevitable trend for modern customized companies to remain competitive. This study proposes a CS evaluation method for customized product development using Entropy weight and Analytic Hierarchy Process (AHP). Firstly, customer requirements are identified based on Voice-of-Customer (VoC), and classified into four categories (positive, negative, must-be and fuzzy attributes) according to the characteristics of CS criteria. Then, CS evaluation model and its solution method are introduced in detail. This study especially focuses on the quantitative methods for each category of the evaluation criteria through formulating several mathematical models, and criteria weights are obtained through integrating Entropy weight and AHP method. Finally, a case study of applying the proposed methodology to customized portrait-based product industry demonstrates the functionality of the proposed methodology.     

Constructing and Utilizing a Model of User Preferences in Collaborative Consultation Dialogues

A natural language collaborative consultation system must take user preferences into account. A model of user preferences allows a system to appropriately evaluate alternatives using criteria of importance to the user. Additionally, decision research suggests both that an accurate model of user preferences could enable the system to improve a user's decision-making by ensuring that all important alternatives are considered, and that such a model of user preferences must be built dynamically by observing the user's actions during the decision-making process. This paper presents two strategies: one for dynamically recognizing user preferences during the course of a collaborative planning dialogue and the other for exploiting the model of user preferences to detect suboptimal solutions and suggest better alternatives. Our recognition strategy utilizes not only the utterances themselves but also characteristics of the dialogue in developing a model of user preferences. Our generation strategy takes into account both the strength of a preference and the closeness of a potential match in evaluating actions in the user's plan and suggesting better alternatives. By modeling and utilizing user preferences, our system is able to fulfill its role as a collaborative agent.     

基于用户影响的QoS可信度分析

Web服务越来越受到大家的关注,Web服务的QoS研究也越来越被研究者所关注。可信度是用户的主观的感受,所以用户对可信度的影响是不可以忽视的。主要考虑基于用户影响的QoS可信度问题,通过模糊评价方法提出了将用户评价作为反馈,来对QoS的值进行调整。让QoS的值不仅仅取决于服务提供者提供的信息,使得QoS值更加可信。     

Assessing the effects of service quality and justice on customer satisfaction and the continuance intention of mobile value-added services: An empirical test of a multidimensional model

Understanding the antecedents and consequences of customer satisfaction in the mobile communications market is important. This study explores the effects of service quality and justice on customer satisfaction, which, in turn, affects continuance intention of mobile services. Service quality, justice and customer satisfaction were measured by multiple dimensions. A research model was developed based on this multidimensional approach and was empirically examined with data collected from about one thousand users of mobile value-added services in China. Results show that all three dimensions of service quality (interaction quality, environment quality and outcome quality) have significant and positive effects on cumulative satisfaction while only one dimension of service quality (interaction quality) has a significant and positive effect on transaction-specific satisfaction. Besides procedural justice, the other two dimensions of justice (distributive justice and interactional justice) significantly influence both transaction-specific satisfaction and cumulative satisfaction. Furthermore, both types of customer satisfaction have significant and positive effects on continuance intention. Implications for research and practice are discussed.     

P2P中基于用户满意度的资源分配机制

针对对等联网（P2P）的特点,基于用户对分配的资源的满意度,提出了一种P2P带宽资源分配的方法。首先,描述了P2P网络中现有分配机制的不足之处,然后从竞争资源的节点满意度方面出发,以最大化竞争节点的效益为目标进行共享资源的分配。通过与其他分配机制的比较和分析可知这种机制很适合P2P网络环境的需求,有效地利用了资源且满足了用户的请求。     

基于云模型理论的网络用户行为评判模型研究

由于网络的异构性使得网络中的用户纷繁复杂,而众多的网络用户行为表现方式又多种多样,也直接影响到网络的安全性.本文借鉴已有的研究工作,以复杂的网络环境为研究背景,通过对复杂网络环境中用户行为的研究,引入云模型理论,研究并提出了一个基于云模型理论的网络用户行为评判模型,实现了对网络用户行为定量描述及评判;同时研究结果还体现了网络用户行为的不确定性和评判标准的差异性,这样使网络行为评判结果更加符合客观事实.仿真实验进一步验证了本文研究的网络用户行为评判模型能够对复杂的网络环境中网络用户行为做出合理的评判,为复杂的网络环境中网络行为评判的研究提供了有价值的新思路.