Concept

Constraint (mathematics)

Related publications (210)

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Recent Advances in Dynamic, Distributed Constraint Optimization

Adrian Petcu

Constraint satisfaction/optimization is a powerful paradigm for solving numerous tasks in distributed AI, including planning, scheduling and resource allocation. However, up to now, distributed algorithms for constraint reasoning (especially optimization) ...

2006

Optimal water allocation for an alpine hydropower system under changing scenarios

Paolo Perona

The operating rules of water allocation in the alpine OFIMA hydropower network of the Maggia River basin (Canton Tessin, Switzerland) are investigated in response to changes in the production policy and environmental and climatic factors. The study was car ...

Springer Verlag2006

Solving issues in the estimation of econometric models

Michel Bierlaire, Michaël Clément Louis Ghislain Thémans

Econometric models play an important role in transportation analysis. Estimating more and more complex models becomes problematic. The associated log-likelihood function is highly nonlinear and non concave and the comlexity of the model requires constraint ...

STRC 20062006

Solving singularity issues in the estimation of econometric models

Michel Bierlaire, Michaël Clément Louis Ghislain Thémans

2006

Mapping task-graphs on distributed ECU networks: Efficient algorithms for feasibility and optimality

Friedrich Eisenbrand, Gennady Shmonin

This mapping problem has to be solved in many application scenarios. In the automotive industry, for example, the implementation of car functions involves distributed task sets running on multiple electronic control units (ECU) with bus-based inter-task co ...

2006

Distributed Generator Maintenance Scheduling

Boi Faltings, Adrian Petcu

In recent years the electricity sector has undergone a number of changes that all point in the direction of liberalization and decentralization of control. However, a number of technological challenges have to be addressed before the desired degree of dece ...

2005

Rigorous solution techniques for numerical constraint satisfaction problems

Xuan-Ha Vu

A constraint satisfaction problem (e.g., a system of equations and inequalities) consists of a finite set of constraints specifying which value combinations from given variable domains are admitted. It is called numerical if its variable domains are contin ...

EPFL2005

Run-to-run Optimization of Filamentous Fungal Fermentation

Dominique Bonvin, Levente Bodizs

Improving the productivity of fed-batch filamentous fungal fermentations can be formulated as a dynamic optimization problem. However, numerical optimization based on a nominal process model is typically insufficient when uncertainty in the form of model m ...

2005

Agile preference models based on soft constraints

Boi Faltings, Pearl Pu Faltings, Jiyong Zhang

An accurate model of the user's preferences is a crucial element of most decision support systems. It is often assumed that users have a well-defined and stable set of preferences that can be elicited through a set of questions. However, recent research ha ...

American Association for Artificial Intelligence, Menlo Park, CA 94025-3496, United States2005

Composition for component-based modeling

Joseph Sifakis

We propose a framework for component-based modeling using an abstract layered model for components. A component is the superposition of two models: a behavior model and an interaction model. Interaction models describe architectural constraints induced by ...

2005