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16 years 9 months ago
LUGrid: Update-tolerant Grid-based Indexing for Moving Objects
Indexing moving objects is a fundamental issue in spatiotemporal databases. In this paper, we propose an adaptive Lazy-Update Grid-based index (LUGrid, for short) that minimizes th...
Xiaopeng Xiong, Mohamed F. Mokbel, Walid G. Aref
78
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ICML
2005
IEEE
15 years 10 months ago
Near-optimal sensor placements in Gaussian processes
When monitoring spatial phenomena, which are often modeled as Gaussian Processes (GPs), choosing sensor locations is a fundamental task. A common strategy is to place sensors at t...
Carlos Guestrin, Andreas Krause, Ajit Paul Singh
COLT
2007
Springer
15 years 3 months ago
Bounded Parameter Markov Decision Processes with Average Reward Criterion
Bounded parameter Markov Decision Processes (BMDPs) address the issue of dealing with uncertainty in the parameters of a Markov Decision Process (MDP). Unlike the case of an MDP, t...
Ambuj Tewari, Peter L. Bartlett
SUTC
2006
IEEE
15 years 3 months ago
The Computational Complexity of Enforceability Validation for Generic Access Control Rules
In computer security, many researches have tackled on the possibility of a unified model of access control, which could enforce any access control policies within a single unified...
Vincent C. Hu, D. Richard Kuhn, David F. Ferraiolo
WINE
2005
Springer
144views Economy» more  WINE 2005»
15 years 3 months ago
Club Formation by Rational Sharing: Content, Viability and Community Structure
A sharing community prospers when participation and contribution are both high. We suggest both, while being related decisions every peer makes, should be given separate rational ...
W.-Y. Ng, D. M. Chiu, W. K. Lin