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CIKM
2011
Springer
14 years 1 months ago
Lower-bounding term frequency normalization
In this paper, we reveal a common deficiency of the current retrieval models: the component of term frequency (TF) normalization by document length is not lower-bounded properly;...
Yuanhua Lv, ChengXiang Zhai
MASCOTS
2001
15 years 2 months ago
Aggregating Caches: A Mechanism for Implicit File Prefetching
We introduce the aggregating cache, and demonstrate how it can be used to reduce the number of file retrieval requests made by a caching client, improving storage system performan...
Ahmed Amer, Darrell D. E. Long
ICRA
2007
IEEE
173views Robotics» more  ICRA 2007»
15 years 7 months ago
Model-Based Nonlinear Observers for Underwater Vehicle Navigation: Theory and Preliminary Experiments
— This paper reports the analytical development and preliminary experimental evaluation of a class of exact nonlinear full state model-based observers for underwater vehicle navi...
James C. Kinsey, Louis L. Whitcomb
JSAC
2010
88views more  JSAC 2010»
14 years 12 months ago
Modeling broadcasting using omnidirectional and directional antenna in delay tolerant networks as an epidemic dynamics
—We study broadcasting of information in a system of moving agents equipped with omnidirectional as well as directional antenna. The agent communication protocol is inspired by t...
Fernando Peruani, A. Maiti, Sanjib Sadhu, Hugues C...
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ATAL
2009
Springer
15 years 8 months ago
A mathematical analysis of collective cognitive convergence
Multi-agent systems are an attractive approach to modeling systems of interacting entities, but in some cases mathematical models of these systems can offer complementary benefits...
H. Van Dyke Parunak