BY JEFF TIEMAN Mr. Tieman is senior director, Health Reform Initiatives, Catholic Health Association, Washington, D.C. I recently joined Facebook, the online social networking website with more than 150 million users worldwide (www.facebook.com). I set up a personal page and have reconnected with many old friends — from childhood, from college, from previous jobs. For many people, in particular...

Social networking sites experience huge growth in their number of members. For marketing purposes they are very beneficial to spread Word-of-Mouth in terms of product recommendations. A closer view detects that social networking sites can be divided in open(OSNs) and invitation-only social networking sites (ISNs). Their members may behave different in contributing knowledge in terms of product ...

Sentiment analysis is the process of analyzing a person’s perception or belief about a particular subject matter. However, finding correct opinion or interest from multi-facet sentiment data is a tedious task. In this paper, a method to improve the sentiment accuracy by utilizing the concept of categorized dictionary for sentiment classification and analysis is proposed.  A categorized dictiona...

Traditionally, the social aspect of project-based learning was mainly in the form of face-to-face communication and supplemented by online media such as email and discussion boards. With the emergence of Web 2.0, social networking sites, which are renowned for their strong social element, appear to be another useful tool to further support the social aspects of project-based learning. An explor...