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Index Pruning and Result Reranking: Effects on Ad-Hoc Retrieval and Named Page Finding

We describe experiments conducted for the TREC 2006 Terabyte track. Our experiments are centered around two concepts: Static index pruning (for increased retrieval efficiency) and result reranking (for improved precision). We investigate their effect on retrieval efficiency and effectiveness, paying special attention to the difference between ad-hoc retrieval and named page finding. We show tha...

iTitle Page Protocol Architectures for Energy Efficient Real-Time Data Communications in Mobile Ad Hoc Networks

The challenge in the design of a protocol architecture for Mobile Ad Hoc Networks (MANETs) is to efficiently convey information using an unreliable physical channel within a dynamic connected set of mobile limited-range limited-energy radios without the support of any infrastructure. Since a MANET is a dynamic, distributed entity, the optimal control of such a system should also be dynamic and ...

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