Sylvain Perron

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Cahiers du GERAD

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For the last decades, community detection is a well-studied problem because it has applications in various fields. Variable Neighborhood Search (VNS) is an e...

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Extreme Learning Machine (ELM) has recently increased popularity and has been successfully applied to a wide range of applications. Variants using regulariza...

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In this paper, we propose an empirical study of the centrality of actors in network. The data was collected among publicly available information of the boa...

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In this paper, we propose an empirical study of the centrality of actors in network. The data was collected among publicly available information of the boa...

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Le nombre de Cahiers du GERAD vient de dépasser 2000. C'est un nombre qui en dit long sur l'activité du centre. Nous profiterons de cette occasion pour fa...

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This paper studies a districting problem which arises in the context of financial product pricing. The challenge lies in partitioning a set of small geogra...

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Application of the dispersion models in order to address the cannibalization phenomenon within franchised chains is a new approach. In this work we have deve...

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This paper presents a decomposition approach for solving a variant of the Routing and Wavelength Assignment (RWA) problem, in which all connection requests a...

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The MaxSumSum (maximum diversity) problem consists of the selection of <i>p</i> facilities among <i>n</i> candidate locations in a way that the total sum ...

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Dispersion problems consist of the selection of a fixed number of vertices from a given set so that some function of the distances among the vertices is maxi...

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Finding communities, or clusters, or modules, in networks can be done by optimizing an objective function defined globally and/or by specifying conditions wh...

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Finding communities, or clusters, in networks, or graphs, has been the subject of intense studies in the last ten years. The most used criterion for that pu...

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In the last ten years, finding communities in networks, has been the subject of intense studies. If modularity maximization is still one of the mostly studi...

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Finding modules, or clusters, in networks currently attracts much attention in several domains. The most studied criterion for doing so, due to Newman and Gi...

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It is observed that mutations in the formulations of test problems over time are not infrequent. Ensuing problems are illustrated with examples from geometri...

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A recent paper of Tuy and Hoai-Phuong published in <i>JOGO</i> (2007) 37:557--569 observes that there are errors in the reformulation of a signomial geometr...

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The hexagon and heptagon with unit diameter and maximum sum of Euclidean distances between vertices are determined by enumerating diameter configurations, an...

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We consider one of the most important issues for multinationals, the determination of transfer prices. To do so, we examine the example of a multinational co...

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We consider the problem of separating two sets of points in an n-dimensional real space with a (hyper)plane that minimizes the sum of <i>L</i><sub>2</sub>-n...

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We consider the problem of separating two sets of points in an <i>n</i>-dimensional real space with a (hyper)plane that minimizes the sum of <i>L<sub>p</sub...

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