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See detailShape-aware surface reconstruction from sparse 3D point-clouds
Bernard, Florian UL; Salamanca Mino, Luis UL; Thunberg, Johan UL et al

in Medical Image Analysis (2017), 38

The reconstruction of an object’s shape or surface from a set of 3D points plays an important role in medical image analysis, e.g. in anatomy reconstruction from tomographic measurements or in the process ... [more ▼]

The reconstruction of an object’s shape or surface from a set of 3D points plays an important role in medical image analysis, e.g. in anatomy reconstruction from tomographic measurements or in the process of aligning intra-operative navigation and preoperative planning data. In such scenarios, one usually has to deal with sparse data, which significantly aggravates the problem of reconstruction. However, medical applications often provide contextual information about the 3D point data that allow to incorporate prior knowledge about the shape that is to be reconstructed. To this end, we propose the use of a statistical shape model (SSM) as a prior for surface reconstruction. The SSM is represented by a point distribution model (PDM), which is associated with a surface mesh. Using the shape distribution that is modelled by the PDM, we formulate the problem of surface reconstruction from a probabilistic perspective based on a Gaussian Mixture Model (GMM). In order to do so, the given points are interpreted as samples of the GMM. By using mixture components with anisotropic covariances that are “oriented” according to the surface normals at the PDM points, a surface-based fitting is accomplished. Estimating the parameters of the GMM in a maximum a posteriori manner yields the reconstruction of the surface from the given data points. We compare our method to the extensively used Iterative Closest Points method on several different anatomical datasets/SSMs (brain, femur, tibia, hip, liver) and demonstrate superior accuracy and robustness on sparse data. [less ▲]

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See detailWhat makes Data Science different? A discussion involving Statistics2.0 and Computational Sciences
Ley, Christophe; Bordas, Stéphane UL

E-print/Working paper (2017)

Data Science is today one of the main buzzwords be it in business, industrial or academic settings. Machine learning, experimental design, data-driven modelling are all, undoubtedly, rising disciplines if ... [more ▼]

Data Science is today one of the main buzzwords be it in business, industrial or academic settings. Machine learning, experimental design, data-driven modelling are all, undoubtedly, rising disciplines if one goes by the soaring number of research papers and patents appearing each year. The prospect of becoming a ``Data Scientist'' appeals to many. A discussion panel organised as part of the European Data Science Conference (European Association for Data Science (EuADS)) asked the question: ``What makes Data Science different?'' In this paper we give our own, personal and multi-facetted view on this question, from an engineering and a statistics perspective. In particular, we compare Data Science to Statistics and discuss the connection between Data Science and Computational Science. [less ▲]

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See detailCorruption prevention in respect of Members of Parliament, Judges and Prosecutors- Evaluation Report Switzerland
Poirier, Philippe UL

Report (2017)

In a report published, the Council of Europe anti-corruption body (GRECO) highlights the specificities of Switzerland’s institutions which enjoy considerable public confidence. It underlines, however ... [more ▼]

In a report published, the Council of Europe anti-corruption body (GRECO) highlights the specificities of Switzerland’s institutions which enjoy considerable public confidence. It underlines, however, that the very organisation of the system allows subtle pressure to be exerted on politicians and the judiciary (See also the French, German and Italian versions of the report). More specifically, GRECO deems it necessary to increase members of parliament’s (MPs) awareness regarding issues of ethics and conflicts of interest. To this end, it recommends adopting a code, announcing publicly MPs’ conflicts of interest as part of the parliamentary procedure and developing the system for declaring relevant interests. These measures need to be accompanied by a reinforced monitoring of MPs’ compliance with their obligations. While recognising the legitimacy of the principle of the election of judges of the federal courts by the Federal Assembly, GRECO calls for improvements to better ensure the quality and objectivity of the recruitment of these judges. It also underlines the importance of severing ties with the political powers after their election, notably by doing away with the practice of judges paying part of their salary to “their” party. Rules of professional ethics applicable to judges also need to be developed and a transparent disciplinary system put in place. The Office of the Attorney General of the Confederation, which enjoys a large degree of independence, also needs to develop rules of professional ethics applicable to its members and to provide greater transparency in disciplinary matters. The implementation of the 12 recommendations addressed to Switzerland will be assessed by GRECO in the second half of 2018 through its compliance procedure. [less ▲]

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See detailTendenzen und Entwicklungen der Theaterlandschaft in Europa. Zwischen ökonomischen Zwängen und europäischem Anspruch
BLOCH, Natalie UL

in BLOCH, Natalie; BLOCH, Dieter; Tropper, Elisabeth (Eds.) Vorstellung Europa - Performing Europe. Interdisziplinäre Perspektiven auf Europa im Theater der Gegenwart (2017)

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See detailFinancial Intermediation and Macroeconomic Fluctuations
Chevallier, Claire Océane UL

Doctoral thesis (2017)

Detailed reference viewed: 20 (5 UL)
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See detailCorrelates of social exclusion in social anxiety Disorder: An fMRI study
Heeren, Alexandre; Dricot, Laurence; Billieux, Joël UL et al

in Scientific Reports (2017), 7

Cognitive models posit that social anxiety disorder (SAD) is maintained by biased informationprocessing vis-à-vis threat of social exclusion. However, uncertainty still abounds regarding the very nature ... [more ▼]

Cognitive models posit that social anxiety disorder (SAD) is maintained by biased informationprocessing vis-à-vis threat of social exclusion. However, uncertainty still abounds regarding the very nature of this sensitivity to social exclusion in SAD. Especially, brain alterations related to social exclusion have not been explored in SAD. Our primary purpose was thus to determine both the selfreport and neural correlates of social exclusion in this population. 23 patients with SAD and 23 matched nonanxious controls played a virtual game (“Cyberball”) during fMRI recording. Participants were frst included by other players, then excluded, and fnally re-included. At the behavioral level, patients with SAD exhibited signifcantly higher levels of social exclusion feelings than nonanxious controls. At the brain level, patients with SAD exhibited signifcantly higher activation within the left inferior frontal gyrus relative to nonanxious controls during the re-inclusion phase. Moreover, self-report of social exclusion correlates with the activity of this cluster among individuals qualifying for SAD diagnosis. Our pattern of fndings lends strong support to the notion that SAD may be better portrayed by a poor ability to recover following social exclusion than during social exclusion per se. These fndings value social neuroscience as an innovative procedure to gain new insight into the underlying mechanisms of SAD. [less ▲]

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See detailWhen An Educational Ideology Travels: The Experience Of The New Math Reform In Luxembourg
Nadimi Amiri, Shaghayegh UL

in Mathematics Education and Life at Times of Crisis (2017)

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See detailAnimal-assisted intervention in dementia: Effects on neuropsychiatric symptoms and on caregivers' distress perceptions
Tournier, Isabelle UL; Vives, Marie-Frédérique; Postal, Virginie

in Swiss Journal of Psychology = Schweizerische Zeitschrift für Psychologie = Revue suisse de psychologie (2017), 76(2), 51-58

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See detailN-point Virasoro algebras are multipoint Krichever-Novikov-type algebras
Schlichenmaier, Martin UL

in Communications in Algebra (2017), 45

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See detailHarvesting Fix Hints in the History of Bugs
Bissyande, Tegawendé François D Assise UL

Report (2015)

In software development, fixing bugs is an im- portant task that is time consuming and cost-sensitive. While many approaches have been proposed to automatically detect and patch software code, the ... [more ▼]

In software development, fixing bugs is an im- portant task that is time consuming and cost-sensitive. While many approaches have been proposed to automatically detect and patch software code, the strategies are limited to a set of identified bugs that were thoroughly studied to define their properties. They thus manage to cover a niche of faults such as infinite loops. We build on the assumption that bugs, and the associated user bug reports, are repetitive and propose a new approach of fix recommendations based on the history of bugs and their associated fixes. In our approach, once a bug is reported, it is automatically compared to all previously fixed bugs using information retrieval techniques and machine learning classification. Based on this comparison, we recommend top-k fix actions, identified from past fix examples, that may be suitable as hints for software developers to address the new bug [less ▲]

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See detailLa détermination du prix dans les contrats commerciaux portant vente de marchandises - Réflexions comparatives
Corbisier, Isabelle UL

in Revue Internationale de Droit Comparé (1988), 40(4), 767-831

La question de la détermination du prix dans la vente se rattache dans de nombreux systèmes juridiques (nous envisageons ici les droits français, belge, anglais, américain et louisianais) au principe de l ... [more ▼]

La question de la détermination du prix dans la vente se rattache dans de nombreux systèmes juridiques (nous envisageons ici les droits français, belge, anglais, américain et louisianais) au principe de l'autonomie de la volonté « principle of freedom of contract ». Cette étude démontre que l'application de ce principe doit être infléchie, voire même remise en question, dans un contexte contemporain de relations commerciales dont la complexité et la durée appellent une approche plus flexible. Nous verrons dans quelle mesure ce résultat a été atteint sur les plans tant nationaux qu'international. Une utilisation plus généralisée de certains standards devrait résulter en une plus grande uniformisation de conceptions dont la diversité est finalement moins grande qu'il n'y paraît. TEXTE INTEGRAL DE L'ARTICLE SOUS LE LIEN INTERNET INDIQUE Ci-DESSOUS [less ▲]

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