基于主动学习的微博聚类分析

K Means聚类算法由于无法准确确定初始化聚类中心,容易造成 聚类结果准确率低下。对微博数据聚类时,可能会导致无法正确反映兴趣热点。本文 设计了基于主动学习的聚类算法,在确定初始聚类中心过程中应用Min Max主动学习策略, 使 得算法每次在很小数量的查询后都会提供数据点供用户进行初始中心点确认,并在K Means算 法中重新计算聚类中心时设置其权重值,从而减少迭代的数量,提高聚类结果的准确 率,并将这一算法运用于微博聚类分析,得出微博热门话题。     

Communicating with Faculty,Staff, and Students Using Library Blogs: Results from a Survey of Academic Health Sciences Libraries

This study investigated use and management of blogs in academic health sciences libraries. Quantitative and qualitative data were collected with a questionnaire distributed to bloggers and administrators representing 22 libraries self-identified as using blogs to publish library newsletters. Perceived barriers to use of blogs included lack of patron awareness and technical issues. Blogs were viewed as easy to use by librarians and blogs are used to promote licensed resources. Blogs do not replace other interactions with librarians, but in the future, could be used to develop a community, provide tools for learning, and increase visibility of the library.     

Acceptance of Corporate Blogs for Collaboration and Knowledge Sharing

ABSTRACT

This study investigates employees’ acceptance of corporate Web 2.0 applications for collaboration and knowledge sharing. Results show that altruism, managerial support, and perceived usefulness are good predictors of the intention to use corporate blogs as tools for collaboration and knowledge sharing. The study further explores differences between employees from companies with low and high adoption rates, and uses prediction-oriented segmentation to unveil two different paths to adoption of Web 2.0 collaborative tools in companies.     

Towards an analysis framework for investigating students' engagement and learning in educational blogs

Educational blogs are currently gaining in popularity in schools and higher education institutions, and they are widely promoted as collaborative tools supporting students' active learning. However, literature review on educational blogging revealed a lack of a complete and consistent framework for studying and assessing students' engagement and the impact of blogging on students' learning. This study reports on the application of an analysis framework for evaluating blogging learning activities, based on two well‐documented models, those of Community of Inquiry (CoI) and Social Network Analysis. The framework proposed is examined through an empirical study involving 21 K‐9 students, coming from two classes, in Greece. This investigation shed light into the different ways of students' engagement in a blog‐based project, namely their social and cognitive presence that supported the development of a CoI and learning. The results suggest that the students, through their different roles in the blog, achieved higher thinking and cognitive levels.     

A review of homemade cosmetics based on a study of 150 blogs and their authors

Do-it-yourself methods have been used in many fields (cooking, home improvement, decoration, gardening, etc.) for a long time, but their application to the cosmetics sector is relatively recent and seems to be linked to a number of health scandals. The objective of this work is to analyse homemade cosmetics based on a study of blogs and their authors. We made a study of 150 blogs advocating homemade cosmetics. With only one exception, the blog authors were women, mostly in their thirties, with no specific qualifications or knowledge in the fields of cosmetic formulation or chemistry. The most highly qualified of them (with at least a Master's degree) had studied marketing and management. So, the situation is an illustration of the Dunning-Kruger effect, with authors believing themselves to be qualified in a field wholly outside their own. This leads to scientific falsehoods about, for example, preservatives like parabens and phenoxyethanol. On the contrary, the relevance of the ecological motivation frequently mentioned in these blogs is undeniable.     

Making Marketing Work for Your Library Blog

ABSTRACT

Library blogs offer a compelling means of reaching out to patrons and engaging them in conversation. However, even the most well-written blog can suffer for lack of an audience if not marketed properly. The marketing concept and the related marketing mix provide useful frameworks for planning and implementing blog projects to give them the best chances of being read by the intended patrons. This article will describe the marketing concept and marketing mix and explain how these ideas can be successfully applied to any library blog endeavor.     

Blog Archiving Issues: A Look at Blogs on Major Events and Popular Blogs

This paper describes the state of blog archiving by identifying from the published literature the most popular blogs and blogs on major events. Next it will check their current status and archiving methods. Blogs are not systematically archived, and some blogs on major events of the first decade of this millennium may already have been lost. It calls for better preservation and organization of blogs that have historical significance.     

Religious Authority and the Blogosphere

It is often argued that the internet poses a threat to traditional forms of authority. Within studies of religion online claims have also been made that the internet is affecting religious authority online, but little substantive work has backed up these claims. This paper argues for an approach to authority within online studies which looks separately at authority: roles, structures, beliefs/ideologies and texts. This approach is applied to a thematic analysis of 100 religious blogs and demonstrates that religious bloggers use their blogs to frame authority in ways that may more often affirm than challenge traditional sources of authority.     

Social Software in Academic Libraries for Internal Communication and Knowledge Management: A Comparison of Two Reference Blog Implementations

This article investigates the adoption of new innovations for internal reference desk communication and knowledge management in academic libraries, specifically the use of social software tools. Actual implementations of the free blog software Wordpress from two university libraries are described including charts detailing advantages and disadvantages of the methods. In the context of the diffusion of innovation and organizational lag theories, the analyzed outcomes confirm that while social software tools are being used, relatively few institutions have exploited them for improving in-house processes. Without clearly articulated long-term gains, adoption of administrative innovations will follow the pattern of organizational lag.