XRCE organises public scientific seminars on a regular basis which you are welcome to attend. These seminars are an occasion to exchange with researchers from various backgrounds and to broaden scientific expertise. You can subscribe to our seminar RSS Feed for dates, speakers and topics.
Dans cet exposé, je présenterai kOLEKTi, une plateforme web pour la production de documents personalisés. kOLEKTi permet de:
Dans cette présentation, je propose une approche conceptuelle et opératoire de l'innovation et du changement, dérivée de mes différents travaux de recherche autour des designs des écritures et des images, et à partir du point de vue des Sciences de l'information et de la communication. La hiérarchisation conceptuelle proposée et ses applications amènent une possibilité de meilleure compréhension et d'évaluation de processus et systèmes de communication (notamment graphique) réputés innovants, créatifs, nouveaux, etc.Slides (1) (188.99 kB)
( web e-mail ), Doctoral candidate at Institute of Geomatics and Risk Analysis, University of Lausanne, Lausanne, Switzerland will give a talk:
Data Clustering with Functional Embedding: Algorithms and Applications
In this talk I will discuss recent work on clustering algorithms based on neural networks. Graph-based algorithms such as spectral clustering and Laplacian eigenmaps have proven useful in the analysis of datasets exhibiting a clustering along nonlinear manifolds. However, such algorithms suffer many drawbacks, e.g., their scalability is very limited, and classifying out-of-sample points is difficult. Learning the clustering through a functional model allows scaling the system to very large databases and extending the clustering to new examples as they become available. Results show that the classification accuracy can even be improved thanks to a joint optimization of clustering and embedding.
Recent extensions to semi-supervised learning (manifold transduction and manifold regularization) are shortly reviewed, and applications in image classification and language processing are discussed.
Joint work with Jason Weston, Matthew Miller and Ronan Collobert.Slides (309.08 kB)
The talk will discuss ways to visualize research domains, based on bibliometric data and methods. This visualization has a double aim: to discover structures of research domains and to use the results for research quality evaluation. Most of the concrete examples will come from tentative analyses in the domain of educational research. These - together with experiments with other domains of research - will lead to a more general perspective on the organization of research and scholarly communication.Slides (1.29 MB)
In the recent past, the identification of new decidable fragments of logic, the design of new proof search algorithms, and the design of new logical systems in which axioms are replaced by calculus rules, have shed a new light on the notion of proof. Formerly reduced to the formal coding of a logical argument, a proof appears today as a combination of calculus steps and reasoning steps. In this talk, which is intentionally technically light and prospective, I will try to describe the challenges raised by that new vision of the notion of proof.Slides (74.63 kB)