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SIGIR
2011
ACM
14 years 2 months ago
Ad hoc IR: not much room for improvement
Ranking function performance reached a plateau in 1994. The reason for this is investigated. First the performance of BM25 is measured as the proportion of queries satisfied on th...
Andrew Trotman, David Keeler
WWW
2011
ACM
14 years 6 months ago
Search result diversity for informational queries
Ambiguous queries constitute a significant fraction of search instances and pose real challenges to web search engines. With current approaches the top results for these queries ...
Michael J. Welch, Junghoo Cho, Christopher Olston
INFOCOM
2011
IEEE
14 years 3 months ago
A distributed and privacy preserving algorithm for identifying information hubs in social networks
—This paper addresses the problem of identifying the top-k information hubs in a social network. Identifying topk information hubs is crucial for many applications such as advert...
Muhammad Usman Ilyas, Muhammad Zubair Shafiq, Alex...
KCAP
2011
ACM
14 years 2 months ago
Multipedia: enriching DBpedia with multimedia information
Enriching knowledge bases with multimedia information makes it possible to complement textual descriptions with visual and audio information. Such complementary information can he...
Andrés García-Silva, Max Jakob, Pabl...
GIL
2011
13 years 11 months ago
Information Services for Agri-Food Supply Chains - A Framework for Development
Abstract: Several global developments such as the growing demand for bioenergy, limits in the availability of water and diminishing production resources as well as sector-wide cris...
Richard J. Lehmann, Robert Reiche, Melanie Fritz, ...