Austerity plans, the riots, and the role of Germany and the IMF in the crisis by Dafna Shahaf, Carlos Guestrin and Eric Horvitz

When information is abundant, it becomes increasingly difficult to fit nuggets of knowledge into a single coherent picture. Complex stories spaghetti into branches, side stories, and intertwining narratives. In order to explore these stories, one needs a map to navigate unfamiliar territory. We propose a methodology for creating structured summaries of information, which we call metro maps. Our proposed algorithm generates a concise structured set of documents maximizing coverage of salient pieces of information. Most importantly, metro maps explicitly show the relations among retrieved pieces in a way that captures story development. We first formalize characteristics of good maps and formulate their construction as an optimization problem. Then we provide efficient methods with theoretical guarantees for generating maps. Finally, we integrate user interaction into our framework, allowing users to alter the maps to better reflect their interests. Pilot user studies with a real-world dataset demonstrate that the method is able to produce maps which help users acquire knowledge efficiently.

Shahaf, D., Guestrin, C., and Horvitz, E. 2012. Trains of thought: generating information maps. In Proceedings of the 21st international conference on World Wide Web, WWW '12, pp. 899-908, New York, NY, USA. ACM.

DOI:10.1145/2187836.2187957

www2012.org/proceedings/proceedings/p899.pdf

© Copyright is held by the International World Wide Web Conference Committee (IW3C2)

Taken on: April 30, 2012

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