个性化推荐系统综述

随着信息时代的不断发展,信息过载是目前互联网用户面临的一个严重问题,个性化推荐系统就是解决这一问题的重要工具。为了解国内对个性化推荐领域的研究现状与发展趋势,通过对相关文献进行收集处理并借用VOSviewer、Excel对发文量、发文期刊、发文作者、关键词进行现状分析,同时对个性化推荐系统的关键技术用户兴趣模型和推荐算法进行阐述介绍。最后指出了未来个性化推荐系统的挑战与研究重点。     

基于案例推理的用户信息行为模型研究

<正>随着信息技术的快速发展,网络环境下能否以合适的方式为用户提供主动服务,其关键是具有用户个性化模型自动构建机制和情境驱动的推理机制。在个性化模型构建的理论方面,国内已经有了一些探索。目前,国外的同类研究正朝更深层次发展,开始研究个性化服务的基本原理,探讨将用户个性化模型应用于信息检索和信息推荐,并研究如何根据用户需要进行信息服务和信息传递。     

基于文献计量的个性化推荐研究进展分析

个性化推荐有效缓解了大数据时代"数据爆炸"的现象,通过事先了解用户的潜在兴趣偏好,有针对性的提供符合用户实际需求的信息,从而提高用户的使用效率。本文通过文献计量的方法对2008年到2018年之间的有关个性化推荐的相关文献进行统计分析,分别从时间分布、期刊分布、关键词共现分析以及关键词聚类分析几个部分展开研究,以发现个性化推荐领域的主要研究热点问题与发展趋势,进而探讨未来研究的走向,为个性化推荐的发展提供依据。     

基于协同过滤在高校学习资源个性化推荐系统中应用研究

文章针对目前高校学习资源信息过剩问题而无法向学习者进行个性推荐资源。文章鉴于电子商务个性化推荐模型研究启示,尝试将协同过滤技术应用在高校学习资源中进行个性化推荐技术研究。文章分析了协同过滤技术个性推荐系统类型以及基于项目个性推荐系统模型流程,最后结合案例分析了基于项目协同过滤技术在高校学习资源应用整个流程;并针对协同过滤算法存在问题,提出了改进方法。     

基于模糊聚类的数字图书馆个性化推荐系统方案设计

用户建模是数字图书馆个性化推荐系统中的关键技术,本文依据中图法对用户兴趣进行了建模,并通过Apriori关联规则算法挖掘了信息资源各类别间的关联,然后通过FCM算法对用户进行聚类分析得到目标用户的最近邻,在Top_n最近邻居集中通过协调过滤技术产生推荐。实验结果表明,本文提出的方案是可行的和有效的,也为创新数字图书馆个性化服务提供了一种新的思路。     

基于协同过滤和内容的用户需求混合推荐算法

个性化需求信息推荐是需求识别和获取的有效手段之一。文章提出了一种基于协同过滤和内容筛选的混合推荐模型,该模型利用用户特征相似性解决传统协同过滤的冷启动和稀疏性问题,并基于需求内容的特征提取和分析筛选掉与目标用户兴趣相差较大的需求,以此来提高推荐的准确性。实验表明,该模型能够避免数据稀疏问题,并提高需求推荐的质量。     

基于用户满意度的电子商务个性化推荐评价研究

电子商务个性化推荐不仅能使用户迅速快捷地获得合适的信息,还能为电子商务网站带来丰厚的商业利益。电子商务个性化推荐是指利用电子商务网站向用户提供商品信息和建议,帮助用户决定应该购买什么产品,模拟销售人员帮助客户完成购买过程。电子商务个性化推荐不仅能使用户迅速快捷地获得合适     

基于好友影响的个性化推荐模型

随着社交媒体的广泛应用,在电子商务行为中,消费者很大程度上的购买决策会受到他人因素的影响,尤其是好友的影响。本文提出了社交媒体网络下,用户评论和销量对于推荐模型的影响,建立了基于社交媒体中好友的评论的个性化推荐模型。通过从国内的社交网络中采集相关数据,对模型的效果进行了验证。     

基于网络结构的推荐系统

<正>互联网技术的快速发展,使得大量的信息同时呈现在人们面前,这种现象被称之为信息超载。信息的爆炸使得信息的利用率反而降低,人们很难在如此冗多的信息中挑选出最符合自己要求的信息。通过搜索引擎来过滤信息的方式只能呈现给所有的用户一样的排序结果,无法根据用户的喜好为用户推荐感兴趣的商品或信息。个性化推荐研究开始于20世纪90年代,它被作为一个独立的概念提出来,被认为是当前解决信息超载问题最有效     

基于云计算的信息推荐系统研究

通过对推荐系统和云计算技术的理论、技术问题进行研究,构建基于云计算的信息推荐系统,并对推荐系统中的推荐算法进行深入研究,利用云计算技术设计信息推荐系统,解决互联网中信息过载问题,为不同用户提供个性化的推荐服务,最后对云计算下的推荐系统的研究难点和发展趋势进行展望。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.