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ICWSM
2009
15 years 2 months ago
CourseRank: A Closed-Community Social System through the Magnifying Glass
Social sites are extremely popular among users but user interactions in most sites revolve around relatively simple tasks, such as uploading resources, tagging and poking friends....
Georgia Koutrika, Benjamin Bercovitz, Filip Kalisz...
FSTTCS
2010
Springer
15 years 1 months ago
The Complexity of Model Checking (Collapsible) Higher-Order Pushdown Systems
We study (collapsible) higher-order pushdown systems -- theoretically robust and well-studied models of higher-order programs -- along with their natural subclass called (collapsi...
Matthew Hague, Anthony Widjaja To
CDC
2010
IEEE
151views Control Systems» more  CDC 2010»
14 years 11 months ago
Convergence of discrete-time approximations of constrained linear-quadratic optimal control problems
Abstract-- Continuous-time linear constrained optimal control problems are in practice often solved using discretization techniques, e.g. in model predictive control (MPC). This re...
Lanshan Han, M. Kanat Camlibel, Jong-Shi Pang, W. ...
CDC
2010
IEEE
210views Control Systems» more  CDC 2010»
14 years 11 months ago
Advances in moving horizon estimation for nonlinear systems
In the past decade, moving horizon estimation (MHE) has emerged as a powerful technique for estimating the state of a dynamical system in the presence of nonlinearities and disturb...
Angelo Alessandri, Marco Baglietto, Giorgio Battis...
CDC
2010
IEEE
164views Control Systems» more  CDC 2010»
14 years 11 months ago
Stabilization of polytopic delay difference inclusions: Time-varying control Lyapunov functions
This paper studies stabilization of polytopic delay difference inclusions via the Razumikhin approach. An example of a linear delay difference equation that is globally exponential...
Rob H. Gielen, Mircea Lazar