Concept

Creative Problem Solving

Publications associées (172)

Privacy-Preserving Multi-agent Constraint Satisfaction

Constraint satisfaction has been a very successful paradigm for solving problems such as resource allocation and planning. Many of these problems pose themselves in a context involving multiple agents, and protecting privacy of information among them is of ...

IEEE Computer Society Press2009

AN OPERATOR FORMULATION OF THE MULTISCALE FINITE-VOLUME METHOD WITH CORRECTION FUNCTION

Ivan Lunati

The multiscale finite-volume (MSFV) method has been derived to efficiently solve large problems with spatially varying coefficients. The fine-scale problem is subdivided into local problems that can be solved separately and are coupled by a global problem. ...

2009

BOOSTERS: a derivative-free algorithm based on radial basis functions

Michel Bierlaire, Rodrigue Oeuvray

Derivative-free optimization involves the methods used to minimize an expensive objective functionwhen its derivatives are not available. We present here a trust-region algorithmbased on Radial Basis Functions (RBFs). The main originality of our approach i ...

2009

Global Stabilization of an Inverted Pendulum – Control Strategy and Experimental Verification

Dominique Bonvin

The problem of swinging up an inverted pendulum on a cart and controlling it around the upright position has traditionally been treated as two separate problems. This paper proposes a control strategy that is globally asymptotically stable under actuator s ...

2009

A Fast Multilevel Algorithm for Wavelet-Regularized Image Restoration

Michaël Unser, Cédric René Jean Vonesch

We present a multilevel extension of the popular "thresholded Landweber" algorithm for wavelet-regularized image restoration that yields an order of magnitude speed improvement over the standard fixed-scale implementation. The method is generic and targete ...

IEEE2009

On the use of process integration techniques to generate optimal steam cycle configurations for the power plant industry

François Maréchal, Luc Girardin, Raffaele Bolliger

The integration of steam cycles in the power plant industry aims at optimizing the conversion of the available heat into mechanical power. The proposed method uses process integration techniques and a multi-objective optimisation procedure to generate opti ...

Aidic Servizi Srl, Via Giuseppe Colombo 81/A, Milano, Mi 20133, Italy2009

Constraint-Specific Recovery Networks for Solving Airline Recovery Problems

Michel Bierlaire, Matteo Salani, Niklaus Eggenberg

In this paper, we consider the recovery of an airline schedule after an unforeseen event called disruption, making the planned schedule infeasible. We present a modeling framework that allows the consideration of operational constraints within a Column Gen ...

2009

Convergent Bounds for Stochastic Programs with Expected Value Constraints

Daniel Kuhn

This article describes a bounding approximation scheme for convex multistage stochastic programs (MSP) that constrain the conditional expectation of some decision-dependent random variables. Expected value constraints of this type are useful for modelling ...

2009

Ionic liquids: Solutions for Electrospray Ionisation Mass Spectrometry

Paul Joseph Dyson

Ionic liquids pose challenges and provide solutions for electrospray ionisation mass spectrometry (ESI-MS). Being inherently charged, they are themselves easy to characterise in both positive- and negative-ion mode by ESI-MS, but the challenge arises when ...

American Chemical Soc, Distribution Office, Dept 225, 1155 16Th St Nw, Washington, Dc 20036 Usa2009

Tinkering or Sketching: Apprentices’ Use of Tangibles and Drawings to Solve Design Problems

Pierre Dillenbourg, Patrick Jermann, Guillaume Zufferey

The articulation of practice and theory is a central problematic in a dual apprenticeship system that combines working in a company and attending courses at school. Design problems are proposed by teachers as a way to address theoretical concepts in a prac ...

Springer2008

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