GALaC team at LRI, Paris-Sud

GALaC is a research group at LRI, Paris-Sud University. We are focused on graph theory, combinatorics and network distributed systems algorithmic.

A global presentation of research activities in GALaC was made in 2013 for the AERES evaluation: Slides AERES 2013 and projet.

Recent Posts

Ranking aggregation: graph-based methods and use in bioinformatics

-- Adeline Pierrot (LISN, Galac)

summary: The problem of ranking aggregation is the following: we have a set of elements and a set of rankings of these elements as input, and we want a single ranking as output, which best reflects the set of rankings taken as input. The applications are manifold, especially in bioinformatics ...

Algèbres tridendriformes, arbres de Schröder et algèbre de Hopf

-- Pierre Catoire (Univ. du Littoral)

Les concepts d’algèbres dendriformes, respectivement tridendriformes décrivent l’action de certains éléments du groupe symétrique appelés les battages et respectivement les battages contractants sur l’ensemble des mots dont les lettres sont des éléments d’un alphabet, respectivement d'un monoïde. Un lien entre les algèbres dendriformes et tridendriformes ...

Canadian Traveller Problems in Temporal Graphs.

-- Minh Hang Nguyen (IRIF)

summary: We focus on the Canadian Traveller Problem, where a traveller aims to travel on a network from s to t with the minimum cost, considering that a maximum of k edges can be blocked. These edges remain hidden from the traveller until they visit one of their endpoints. We ...

Current trends in Optimal Stopping Problems and Machine Learning

-- Ini Adinya (LISN, Galac)

summary: Stochastic optimal stopping problems have a wide range of applications, from finance and economics to neuroscience, robotics, and energy management. Many real-world applications involve complex models that have driven the development of sophisticated numerical methods.
Recently, computational methods based on machine learning methods have been developed for solving such ...

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Translations: fr