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Zhao, Haifeng – ProQuest LLC, 2013
Social media provide a multitude of opportunities for knowledge contribution and sharing. However, the content reliability issue has caused comprehensive attention, especially on credible social media, such as Wikipedia. Despite Wikipedia's success with the open editing model, dissenting voices give rise to unreliable content due to two…
Descriptors: Conflict, Vandalism, Knowledge Representation, Cooperation
Kim, Yong-Mi – ProQuest LLC, 2011
In recent years, tags have become a standard feature on a diverse range of sites on the Web, accompanying blog posts, photos, videos, and online news stories. Tags are descriptive terms attached to Internet resources. Despite the rapid adoption of tagging, how people use tags during the search process is not well understood. There is little…
Descriptors: Information Retrieval, Internet, Video Technology, Web Sites
Liu, Jiahui – ProQuest LLC, 2009
The web is a rich and diverse information source with incredible amounts of information about all kinds of subjects in various forms. This information source affords great opportunity to build systems that support users in their work and everyday lives. To help users explore information on the web, web search systems should find information that…
Descriptors: Online Searching, Web Sites, Search Engines, Information Systems
Shen, Warren H. – ProQuest LLC, 2009
This dissertation studies information extraction (IE), the problem of extracting structured information from unstructured data. Example IE tasks include extracting person names from news articles, product information from e-commerce Web pages, street addresses from emails, and names of emerging music bands from blogs. IE is all increasingly…
Descriptors: Information Retrieval, Access to Information, Data Processing, Pattern Recognition