Impact Magazine Fall 2009

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NONPROFIT ORG US POSTAGE PAID PERMIT No. 10 COLLEGE PARK, MD

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Office of the Vice President for Research 2133 Lee Building University of Maryland College Park, MD 20742-5121

Evaluating Trust Online

P

eople are communicating as easily through social media as with their cell phone, but how do the messaging nuances heard in someone’s voice transfer to a status update on Facebook? Jennifer Golbeck, an assistant professor in the iSchool and one of the first researchers in the United States to analyze online social networks, is seeking to answer that question. Trained in computer science, Golbeck builds algorithms that can estimate levels of trust relationships in social media. “Trusted information is a powerful source of information,” says Golbeck. “If you can determine the level of user trust, it allows individuals—or government agencies and private organizations—to make specific choices based on that data.” This can help validate consumer-driven choices like a positive movie review or product recommendations, and might also be used to assess the level of user trust in secure communications between members of the U.S. intelligence community, Golbeck says. Golbeck is also researching how trust in social networks might support decision makers in military combat situations. She is building computational models that determine how much trust a commander could have in battlefield reports that are contradictory or uncertain, and how these reports can be annotated and sorted to help the military better process the information. m

IMPACT

Vol. 4 No. 2

| Fall 2009

Impact is published by the Office of the Vice President for Research and is mailed to members of the mid-Atlantic research community and others who have an interest in the latest research at the University of Maryland. Your comments and feedback are welcome; please e-mail your comments to vpr@umd.edu or fax them to Anne Geronimo, executive editor, at 301.314.9569. If for any reason you would not like to receive this publication, contact us using the same information above.

research & education

spotlight

PUBLISHER

Mel Bernstein Vice President for Research EXECUTIVE EDITOR

Anne Geronimo Director for Research Development MANAGING EDITOR

Tom Ventsias CREATIVE DIRECTOR AND PHOTOGRAPHER

John T. Consoli ART DIRECTOR

Jeanette J. Nelson Cover and feature art include the following digital works: Paradise City by Martin Muir; The End, Way Back and Fall by Airi Pung; Between this year and next, by Paul S. Dixon; Lego Marmelade2 by Johannes Wessmark; Daydream Believer by Shanina Conway; and Cloud Chair by Richard Hutten.

Timeless Art, No Matter the Medium Doug Reside uses the same care and meticulous scholarship to preserve digitally created art as other scholars do in archiving handwritten drafts of literary, artistic or musical masterpieces. The assistant director of the Maryland Institute for Technology in the Humanities, or MITH, Reside researches how digital technologies are changing the creation of American musical theater. He is working with the Library of Congress to preserve the digital files of the Tony Award-winning musical “Rent,” which the family of late com-

poser and playwright Jonathan Larson willed to the federal institution. In addition to hard-copy drafts of “Rent,” Reside is reviewing the almost 150 floppy disks that contained earlier versions of the musical before its 1996 Broadway premiere. Also included in the archived material are specific sound effects that Larson created using now-obsolete technologies. “We feel it important that the original files need to be preserved in the way they were conceived,” says Reside, who has degrees in English and computer science. m

UM Fellows Use New Media Tools to Define New Voters

LESLIE WALKER

The 2008 presidential election was historic in many ways, not the least of which was the surge of interest and involvement from young and minority voters. A team of 12 journalism fellows (pictured above) spent this summer studying these emerging political voices to gain insight into how they are influencing American voting behavior and attitudes. The fellowships were part of News21, a national journalism program sponsored in part by the John S. and James L. Knight Foundation. A key part of the project was incorporating new technologies—including a talking bar chart and a video player that blends linear and nonlinear

storytelling—into the reporting process, says adviser Leslie Walker, the Knight Visiting Professor in Digital Innovation. “In the face of the Internet and disruptive change, the news media must innovate if they are to survive,” Walker says. “And I believe the change agents who will reinvent news and preserve the values of journalism are young journalists like our News21 fellows.” Before joining the Merrill College, Walker was a longtime reporter and columnist who spent more than a decade covering the digital media for The Washington Post. To view the project, go to www.thenewvoters.com. m

Exploring new media Preserving electronic art Mining online data Maryland researchers are shaping the digital future


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