Search Results for author: Laurens Bliek

Found 12 papers, 4 papers with code

Revisit the Algorithm Selection Problem for TSP with Spatial Information Enhanced Graph Neural Networks

no code implementations8 Feb 2023 Ya Song, Laurens Bliek, Yingqian Zhang

In this paper, we revisit the algorithm selection problem for TSP, and propose a novel Graph Neural Network (GNN), called GINES.

Traveling Salesman Problem

Digital Twin Applications in Urban Logistics: An Overview

no code implementations1 Feb 2023 Abdo Abouelrous, Laurens Bliek, Yingqian Zhang

In this paper, we seek to provide a framework by which DTs could be easily adapted to urban logistics networks.

Decision Making

Learning Adaptive Evolutionary Computation for Solving Multi-Objective Optimization Problems

no code implementations1 Nov 2022 Remco Coppens, Robbert Reijnen, Yingqian Zhang, Laurens Bliek, Berend Steenhuisen

The DRL policy is trained to adaptively set the values that dictate the intensity and probability of mutation for solutions during optimization.

Combinatorial Optimization Evolutionary Algorithms

Machine Learning for Combinatorial Optimisation of Partially-Specified Problems: Regret Minimisation as a Unifying Lens

no code implementations20 May 2022 Stefano Teso, Laurens Bliek, Andrea Borghesi, Michele Lombardi, Neil Yorke-Smith, Tias Guns, Andrea Passerini

The challenge is to learn them from available data, while taking into account a set of hard constraints that a solution must satisfy, and that solving the optimisation problem (esp.

EXPObench: Benchmarking Surrogate-based Optimisation Algorithms on Expensive Black-box Functions

1 code implementation8 Jun 2021 Laurens Bliek, Arthur Guijt, Rickard Karlsson, Sicco Verwer, Mathijs de Weerdt

Surrogate algorithms such as Bayesian optimisation are especially designed for black-box optimisation problems with expensive objectives, such as hyperparameter tuning or simulation-based optimisation.

Bayesian Optimisation Benchmarking

Continuous surrogate-based optimization algorithms are well-suited for expensive discrete problems

no code implementations6 Nov 2020 Rickard Karlsson, Laurens Bliek, Sicco Verwer, Mathijs de Weerdt

One method to solve expensive black-box optimization problems is to use a surrogate model that approximates the objective based on previous observed evaluations.

Bayesian Optimization Gaussian Processes

Black-box Mixed-Variable Optimisation using a Surrogate Model that Satisfies Integer Constraints

no code implementations8 Jun 2020 Laurens Bliek, Arthur Guijt, Sicco Verwer, Mathijs de Weerdt

A challenging problem in both engineering and computer science is that of minimising a function for which we have no mathematical formulation available, that is expensive to evaluate, and that contains continuous and integer variables, for example in automatic algorithm configuration.

Black-box Combinatorial Optimization using Models with Integer-valued Minima

1 code implementation20 Nov 2019 Laurens Bliek, Sicco Verwer, Mathijs de Weerdt

When a black-box optimization objective can only be evaluated with costly or noisy measurements, most standard optimization algorithms are unsuited to find the optimal solution.

Bayesian Optimization Combinatorial Optimization

Online Optimization with Costly and Noisy Measurements using Random Fourier Expansions

1 code implementation31 Mar 2016 Laurens Bliek, Hans R. G. W. Verstraete, Michel Verhaegen, Sander Wahls

This paper analyzes DONE, an online optimization algorithm that iteratively minimizes an unknown function based on costly and noisy measurements.

Bayesian Optimization

Exploration and Exploitation in Visuomotor Prediction of Autonomous Agents

no code implementations19 Sep 2013 Laurens Bliek

This paper discusses various techniques to let an agent learn how to predict the effects of its own actions on its sensor data autonomously, and their usefulness to apply them to visual sensors.

Universal Approximation Using Shuffled Linear Models

no code implementations29 Aug 2013 Laurens Bliek

This paper proposes a specific type of Local Linear Model, the Shuffled Linear Model (SLM), that can be used as a universal approximator.

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