Search (6 results, page 1 of 1)

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Abstract

The Wikipedia is a collaborative encyclopedia: anyone can contribute to its articles simply by clicking on an "edit'' button. The open nature of the Wikipedia has been key to its success, but has a flip side: if anyone can edit, how can readers know whether to trust its content? To help answer this question, we have developed a reputation system for Wikipedia authors, and a trust system for Wikipedia text. Authors gain reputation when their contributions are long-lived, and they lose reputation when their contributions are undone in short order. Each word in the Wikipedia is assigned a value of trust that depends on the reputation of its author, as well as on the reputation of the authors that subsequently revised the text where the word appears. To validate our algorithms, we show that reputation and trust have good predictive value: higher-reputation authors are more likely to give lasting contributions, and higher-trust text is less likely to be edited. The trust can be visualized via an intuitive coloring of the text background. The coloring provides an effective way of spotting attempts to tamper with Wikipedia information. A trust-colored version of the entire English Wikipedia can be browsed at http://trust.cse.ucsc.edu/

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Abstract

Increased enrollments, changing student expectations, and shifting patterns of Internet access and usage continue to generate resource and administrative challenges for colleges and universities. Computer center staff and college administrators must balance increased access demands, changing system loads, and system security within constrained resources. To assess the changing academic computing environment, computer center directors from several geographic regions were asked to respond to an online questionnaire that assessed patterns of usage, resource allocation, policy formulation, and threats. Survey results were compared with data from a study conducted by the authors in 1999. The analysis includes changing patterns in Internet usage, access, and supervision. The paper also presents details of usage by institutional type and application as well as recommendations for more precise resource assessment by college administrators.

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Abstract

This is the full text of a "Reply All" debate on Web 2.0 between authors Andrew Keen and David Weinberger

Content

"Mr. Keen begins: So what, exactly, is Web 2.0? It is the radical democratization of media which is enabling anyone to publish anything on the Internet. Mainstream media's traditional audience has become Web 2.0's empowered author. Web 2.0 transforms all of us -- from 90-year-old grandmothers to eight-year-old third graders -- into digital writers, music artists, movie makers and journalists. Web 2.0 is YouTube, the blogosphere, Wikipedia, MySpace or Facebook. Web 2.0 is YOU! (Time Magazine's Person of the Year for 2006). Is Web 2.0 a dream or a nightmare? Is it a remix of Disney's "Cinderella" or of Kafka's "Metamorphosis"? Have we -- as empowered conversationalists in the global citizen media community -- woken up with the golden slipper of our ugly sister (aka: mainstream media) on our dainty little foot? Or have we -- as authors-formerly-know-as-the-audience -- woken up as giant cockroaches doomed to eternally stare at our hideous selves in the mirror of Web 2.0? Silicon Valley, of course, interprets Web 2.0 as Disney rather than Kafka. After all, as the sales and marketing architects of this great democratization argue, what could be wrong with a radically flattened media? Isn't it dreamy that we can all now publish ourselves, that we each possess digital versions of Johannes Gutenberg's printing press, that we are now able to easily create, distribute and sell our content on the Internet? This is personal liberation with an early 21st Century twist -- a mash-up of the countercultural Sixties, the free market idealism of the Eighties, and the technological determinism and consumer-centricity of the Nineties. The people have finally spoken. The media has become their message and the people are self-broadcasting this message of emancipation on their 70 million blogs, their hundreds of millions of YouTube videos, their MySpace pages and their Wikipedia entries. ..."

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Date

21. 4.2002 10:22:31