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Group Details

Geometric Science of Information

The objective of this group is to bring together pure/applied mathematicians, physicist and engineers, with common interest for Geometric tools and their applications. It notably aim to organize conferences and to promote collaborative european and international research projects, and diffuse research results on the related domains. It aims to organise conferences, seminar, to promote collaborative local, european and international research project, and to diffuse research results in the the different related interested domains.

  • Geo-Sci-Info

    Dear all,

    Profound sadness on the passing of Professeur Jean-Louis Koszul (1921-2018+), Friday January 12th 2018, Geometer, Henri Cartan's PhD student, member of Bourbaki, who honored us with his presence at Mines GSI'13 conference for Hirohiko Shima keynote on Geometry of Hessian Structures related to Koszul forms and Koszul-Vinberg Characteristic Function.
    His works on convex homogeneous cones are at the foundation of Information Geometry theory.

    Koszul's papers:
    [A] Koszul, J.L. Sur la forme hermitienne canonique des espaces homogènes complexes. Can. J. Math. 1955, 7, 562–576.
    [B] Koszul, J.L. Exposés sur les Espaces Homogènes Symétriques; Publicação da Sociedade de Matematica de São Paulo: São Paulo, Brazil, 1959.
    [C] Koszul, J.L. Domaines bornées homogènes et orbites de groupes de transformations affines. Bull. Soc. Math. Fr. 1961, 89, 515–533.
    [D] Koszul, J.L. Ouverts convexes homogènes des espaces affines. Math. Z. 1962, 79, 254–259.
    [E] Koszul, J.L. Variétés localement plates et convexité. Osaka. J. Math. 1965, 2, 285–290.
    [F] Koszul, J.L. Déformations des variétés localement plates. Ann. Inst. Fourier 1968, 18, 103–114.
    [G] Koszul, J.L. Trajectoires Convexes de Groupes Affines Unimodulaires. In Essays on Topology and Related Topics; Springer: Berlin, Germany, 1970; pp. 105–110.

    Attached: photo of his last interview for 50th years birthday of "Institut Fourier" in Grenoble:
    May his soul rest in peace.

    F. Barbaresco
    GSI'17 Co-chairman

    posted in Jean-Louis Koszul passed away read more
  • Geo-Sci-Info


    41ème journée ISS France, morphologie mathématique et stéréologie

    La prochaine Journée d'Etude ISS France aura lieu le

    jeudi 1 février 2018
    à l’Ecole des Mines de Paris
    60 boulevard Saint-Michel, Paris 6
    Salle V107

    La date limite pour l'envoi des communications est le 20 janvier 2018.
    Les propositions sont à envoyer sous forme de court résumé (une demi-page)
    par mail à la présente adresse.

    Pour ceux qui ne les connaissent pas encore, les journées d’étude de l’ISS
    sont l’occasion de rassembler les différents acteurs de l’analyse des
    images numériques, de la stéréologie, de la géométrie stochastique et de
    leurs applications et connexions.

    La volonté a été affirmée depuis de nombreuses années de faire des
    journées d’étude de l’ISS France un lieu de rencontre, d’échange et
    réellement pluridisciplinaire qui puise ses forces dans
    l’ensemble du patrimoine intellectuel actuel.

    Le point d’ancrage reste délibérément l’image et les techniques, sciences,
    applications et arts qui s’y intéressent.

    Vous trouverez en pièce jointe le programme de la dernière journée
    d'étude en février 2017 ; vous pourrez y découvrir les thèmes et rubriques
    classiquement abordés lors de ces journées :

    • La Session Méthodes est principalement axée sur les nouveaux paradigmes
      en traitement des images,
    • La session Art et Image aborde les questions de valeur des images au
      sens large,
    • Les sessions Applications parcourent les principaux travaux
      réalisés dans les domaines des BioSciences, des Sciences des Matériaux, de
      la Géographie Mathématique,...

    Cette année encore, nous espérons que la journée d’étude de l’ISS France
    sera l’occasion de nouveautés !
    Dans l'attente de vos propositions, nous restons à votre disposition pour
    toute information complémentaire,

    Pour ISS France,

    Corinne Lagorre** & Bruno Figliuzzi***
    ** Université Paris Est Créteil, LISSI 61 avenue du Gal de Gaulle 94000
    Créteil corinne.lagorre [at]

    *** Mines ParisTech, Centre de Morphologie Mathématique 35 rue Saint-Honoré
    77305 Fontainebleau cedex

    posted in 41st ISS France Day: Mathematical morphology and stereology read more
  • Geo-Sci-Info


    History This conference can be considered a continuation of previous meetings on Geometry and Mathematical Physics which took place in Bulgaria - Zlatograd (1995) and Varna (1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017).

    • "Geometry" in the title refers to modern differential geometry of real and complex manifolds with some emphasis on curves, sigma models and minimal surface theory,
    • "Integrability" to either the integrability of complex structures or classical dynamical systems of particles, soliton dynamics and hydrodynamical flows presented in geometrical form, and
    • "Quantization" to the transition from classical to quantum mechanics expressed in geometrical terms.

    The overall aim is to bring together experts in Classical and Modern Differential Geometry, Complex Analysis, Mathematical Physics and related fields to assess recent developments in these areas and to stimulate research in related topics.

    The workshop will take place in a stimulating environment, which combines a virgin natural landscape with tourist comfort and the unexpected neighbourhood of an ancient historical past. All this in a splendid part of the northern Bulgarian Black Sea coast in the vicinity of Varna.

    Organizing Committee
    Ivaïlo M. Mladenov (Sofia) and Akira Yoshioka (Tokyo)

    Scientific Secretaries
    Mariana Hadzhilazova (Sofia) and Vladimir Pulov (Varna)

    Advisory Committee
    Vladimir Kisil (Leeds), Guowu Meng (Hong Kong), John Oprea (Cleveland),
    Magdalena Toda (Lubbock), Abraham Ungar (North Dakota) and Alexandar Yanovski (Cape Town)

    Standing Committee
    Vladimir Gerdjikov(Sofia), Metin Gürses (Ankara), Andrei Ludu (Daytona),
    Gregory Naber (Philadelphia), Izu Vaisman (Haifa) and Anatol Odzijewicz (Bialystok)

    Scientific Programme
    As previous years we plan to have a few Lecture Courses of 3--5 talks each and Plenary Talks which will be delivered by:


    Plenary Talks

    • TBA

    and at least 30 minute talks by the other participants

    **Proceedings **
    The Proceedings will be published after peer review process which is carried out by the Editors of the Proceedings Series and the Editorial Board of Journal of Geometry and Symmetry in Physics. Since the begining of 2015 all Proceedings are a part of Euclid

    Registration Fee
    There will be a flat registration fee of €440/ €540 for a double/single room accomodation. PhD students are entitled up to a 50% reductions of the above fees. Besides the room this fee covers three meals per day, refreshments and a copy of the Conference Proceedings volume. Payment in US dollars and Bulgarian Levs is accepted at current exchange rates. Please notice that this fee should be paid in cash upon arrival and that no credit cards, personal cheques, bank drafts or travelers cheques can be accepted.

    Please, complete and send your Registration Form. If you wish just to receive information about the future meetings, please register here. Deadline to submit registration forms and abstracts is 15th May 2018.

    In the Koral hotel in Sts. Constantine and Elena (hotel Koral is listed under number 26 on the map). It is assumed that 1 June and 8 June are the arrival, respectively the departure days.
    Please, notice that there is not a local organizing Committee in Varna and earlier arrival will create a lot of problems. However the stay after the Conference can be arranged.


    International Conference on Geometry, Integrability and Quantization, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, BULGARIA.
    Tel: ++ 3592--979 26 37, Fax: ++ 3592--872 37 87

    E-mail Addresses:
    Ivaïlo M. Mladenov -- mladenov[at]
    Akira Yoshioka -- yoshioka[at]

    Related conferences


    baslogo.jpg TUSlogo.gif
    Design by M. Hadzhilazova, E-mail: murryh [at] All rights reserved.

    posted in XX-th Intl. Conf. Geometry Integrability & Quantizationread more
  • Geo-Sci-Info

    Vinberg's theory of homogeneous convex cones: developments and applications
    D. Alexeevsky


    IITP, Russia

    The talk is a review of developments and applications of selected basic ideas, results and notions, presented by E.B. Vinberg in his papers about classification of homogeneous convex cones. We confine ourselves to only three topics:

    1. Theory of left symmetric algebras (Vinberg–Koszul algebras) and Hessian manifolds.
    2. Information geometry , i.e. the geometry of manifolds of probability measures , developed mostly by N.N. Chentsov and S-I Amary and based on ideas by R.A.Fisher, C.R.Rao, C. Shannon and S. Kullback.
    3. Supergravity. Application of the theory of matrix T-algebras by Vinberg for description of so called special geometries (very special real geometry, special Kähler geometry and special quaternionic Kähler geometry (affine and projective)) which arise as matter multiplets in Supersymmetry and Supergravity in spacetime dimension d=6,5,4,3.

    posted in Transformation groups 2017 Conference dedicated to Prof. Ernest B. Vinberg on the occasion of his 80th birthday read more
  • Geo-Sci-Info



    Welcome to Curves and Surfaces

    Welcome to 9th International Conference on Curves and Surfaces, organised by SMAI-SIGMA.

    The conference will take place from June 28 to July 4, 2018 at the Palais des Congrès in Arcachon, France.

    Registration, accomodation and abstract submission are now open.

    Conference topics

    Overall theme: “Representation and Approximation of Curves and Surfaces and Applications” with subtopics (in alphabetical order):

    • Approximation theory
    • Computer-aided geometric design
    • Computer graphics and visualisation
    • Computational geometry and topology
    • Geometry processing
    • Image and signal processing
    • Interpolation and smoothing
    • Mesh generation, finite elements and splines
    • Scattered data processing and learning theory
    • Sparse and high-dimensional approximation
    • Subdivision, wavelets and multi-resolution methods

    as well as related applications in manufacturing, mechanics, solid modelling, terrain modelling, oceanography, geosciences, life sciences ...

    Invited speakers


    Call for contributions

    We welcome contributions as oral presentations and posters. See the submission page for more details, and the important dates page for submission deadlines.

    Three best poster awards with prizes will be awarded.


    Scientific committee

    Supported by

    The conference is organised by SMAI-SIGMA an activity group of Société de Mathématiques Appliquées et Industrielles (SMAI) in collaboration with the following institutions:

    Capture du 2017-12-18 19-37-14.png

    Previous editions

    posted in 9th International Conference on Curves and Surfaces read more
  • Geo-Sci-Info

    Dear Madam or Sir,

    The FSMP offers postdoctoral positions of one or two years in mathematics and computer science available from october 2018. 20 postdoctoral years will be provided in total.
    Find here the detailed offer:
    Online applications until December 1st:

    Please forward this information to your students or to any interested person.

    Best regards,

    Nous vous rappelons que la FSMP offre 20 années postdoctorales en mathématiques et en informatique fondamentale. D’une durée d’un ou deux ans, les postes seront à pourvoir à partir de la rentrée 2018.
    Voir l’offre détaillée ici :
    Les candidatures se font uniquement en ligne jusqu’au 1er décembre 2017 ici :

    N’hésitez pas à transmettre cette information à vos contacts - notamment étrangers - susceptibles d’être intéressés.

    Bien cordialement,

    posted in Jobs offers - Call for projects read more
  • Geo-Sci-Info

    Applications are invited for a Lectureship position in the School of Mathematics at the University of Birmingham, in the area of Probability and Modern Statistics, broadly defined, including any area of statistics, probability theory, computational data analysis, machine learning, or related areas.

    The successful candidate will develop a vibrant research program and teaching curriculum in Probability and Modern Statistics. The successful candidate will have a PhD (or equivalent) in a branch of Mathematics or a related area, a first-class research record and a commitment to teaching, along with excellent communication skills.

    The appointee will be expected to expand or complement present research areas in the School, develop research collaboration inside and outside the School and University, and assist in the design, development and delivery of teaching in Mathematics.

    Informal enquiries can be made to Professor Deryk Osthus, d.osthus [chez]

    To download the details of this position and submit an electronic application online please go to this website, please quote Job Ref 58183 in all enquiries.

    posted in Jobs offers - Call for projects read more
  • Geo-Sci-Info

    Post-doc: Vision et apprentissage statistique appliqués à la détection d'OFNI

    Le CMLA (ENS Paris-Saclay), en collaboration avec iXblue, recherche un jeune chercheur pour un post- doc dans le domaine de la vision et de l'apprentissage statistique, dans le cadre de la détection d'objets en milieu marin.

    Présentation des partenaires

    Le CMLA ( est un laboratoire de Mathématiques Appliquées, unité mixte du CNRS et de l'ENS Paris-Saclay, qui est composé de plusieurs équipes, spécialisées en particulier dans le traitement d'image et dans l'apprentissage statistique.

    IXBlue est une Entreprise de Taille Intermédiaire (ETI) Française créée en 2000 avec 15 salariés et comprenant aujourd’hui environ 600 salariés pour un chiffre d’affaire supérieur à 100 millions d’Euros. Spécialisé dans la conception et la fabrication d’équipements destinés aux domaines de la navigation, de l’imagerie sous-marine, des mesures océanographiques et du spatial, iXBlue réalise 80% de son chiffre d’affaire à l’export avec des produits entièrement conçus et fabriqués en France. Avec 20% de son chiffre d’affaire investit chaque année en R D, iXBlue mène une politique d’innovation très ambitieuse dans les domaines des capteurs, des logiciels de traitements et des plateformes du futurs.


    L’objectif de la recherche est de développer des algorithmes et logiciels de traitement numériques pour la détection d’OFNI (Objets Flottants Non Identifiés) à partir de données mixtes provenant à la fois de caméras installées à l’avant d’un bateau et imageant dans les domaines visibles et infra-rouge, et à partir d'images SONAR.

    Plus précisément, le candidat devra:

    • Evaluer les performances des détecteurs d'éléments caractéristiques et des descripteurs associés dans le domaine de vidéo (domaine visible et infra-rouge), ainsi que dans le domaine du SONAR
    • Développer des méthodes d'apprentissage statistique, tels que les réseaux de neurones convolutionnels, pour rendre plus performante la détection d'OFNI
    • Eventuellement développer des algorithmes de type "track before detect" pour limiter les faux positifs

    Les algorithmes développés seront intégrés dans un système de détection d'OFNI qui sera développé en vue du Vendée Globe 2020.

    Profil recherché

    Nous recherchons un jeune chercheur titulaire d'un doctorat en mathématiques appliquées, traitement de l'image ou apprentissage statistique, et possédant idéalement des compétences en vision par ordinateur.

    Le Français ou l'Anglais courant sont indispensables.

    Les candidats doivent avoir des compétences dans des langages de programmation tels que Matlab, Python, C/C++ et l'utilisation de la bibliothèque OpenCV.

    Informations pratiques

    Lieux : le post-doctorant travaillera sur 2 sites : celui du CMLA à l'ENS Paris-Saclay (Cachan) où il sera intégré à l'équipe de traitement d'images, et celui d'iXblue à St-Germain-en-Laye

    Durée: 2 ans; début ASAP

    Salaire brut: 40 k€ /an


    Dossier de candidature (CV, lettre de motivation, lettre de recommandation) à envoyer par mail à
    agnes.desolneux [ chez ] ET à jean-baptiste.lacambre [ chez ]

    Date limite de candidature: 20 décembre 2017

    posted in Jobs offers - Call for projects read more
  • Geo-Sci-Info

    2 Postdoctoral researchers in interactive AI and machine learning

    The positions belong to the Aalto career system and the selected persons will be appointed for a two-year fixed term appointment with an option for renewal.

    1. Probabilistic machine learning with human in the loop (Prof. Samuel Kaski)

    One of the core questions in machine learning at the moment is how to interact with humans.

    We turn this question into a probabilistic modelling problem, and model both the user and the task to drive the interaction. The solutions need combinations of probabilistic modelling, reinforcement learning and approximate Bayesian computation. We are looking for a postdoc who already masters some of these and offer an opportunity to learn the rest and work with us on this exciting bleeding-edge problem. Two recent sample papers:

    [1] Daee et al., Knowledge elicitation via sequential probabilistic inference for high-dimensional prediction. Machine Learning, 106: 1599–1620 (arXiv: 1612.03328)

    [2] Kangasrääsiö Kaski, Inverse Reinforcement Learning from Summary Data, arXiv:1703.09700

    1. Modeling and machine learning in HCI (Prof. Antti Oulasvirta)

    The position offers an exciting opportunity to learn about and work on applications of machine learning methods and computational models of cognition, perception, and behavior in interactive systems. For relevant previous papers of the team, example papers, see [1], [2], and [3].

    [1] IEEE TVCG 2017:

    [2] CHI 2017: type=pdf

    [3] IEEE Computer 2017:


    Should have a PhD in computer science, statistics, cognitive science, or other area relevant to the themes and publication record in top conferences or journals in machine learning, AI, statistics, cognitive science, or HCI. Good command of English is a necessary prerequisite.

    Compensation, working hours and place of work

    The salary for the position is between 3 498 and 3 673 EUR per month depending on experience and qualifications. In addition to the salary, the contract includes occupational health benefits, and Finland has a comprehensive social security system. The annual total workload of teaching staff at Aalto University is 1 600 hours. The position is located at the Aalto University Otaniemi campus.

    Application material and procedure

    Please send your application through the electronic recruitment system ‘Saima’ (see link at the bottom of the page) no later than Oct 31, 2017 Finnish time. Include your CV, list of publications, a brief research statement, transcript of the doctoral studies, and names and contact information of two senior academics willing to give more information.

    Short-listed candidates may be invited for an interview on the Otaniemi campus of Aalto University in Helsinki or for an interview conducted via Skype. While all applicants who have submitted an application by the deadline will be appropriately considered, Aalto University reserves the right to consider also other candidates for the announced position.

    Further information

    • Professor Samuel Kaski and Professor Antti Oulasvirta, e-mail "firstname.lastname [ chez ]" (research related information)
    • HR Coordinator, Mr. Stefan Ehrstedt, e-mail "firstname.lastname [ chez ]" (application process, practical arrangements)

    Application material will not be returned.

    Espoo, 13 Oct 2017
    Aalto University

    About Aalto University

    Aalto University is a new university created in 2010 from the merger of the Helsinki University of Technology, Helsinki School of Economics and the University of Art and Design Helsinki. The University’s cornerstones are its strengths in education and research, with 20,000 basic degree and graduate students. These positions are in collaborating groups of the Department of Computer Science and Department of Communications and Networking.

    About Helsinki

    The Helsinki Metropolitan area forms a world-class information technology hub, attracting leading scientists and researchers in various fields of ICT and related disciplines. Moreover, as the birthplace of Linux, and the home base of Nokia/Alcatel-Lucent/Bell Labs, F-Secure, Rovio, Supercell, Slush (the biggest annual startup event in Europe) and numerous other technologies and innovations, Helsinki is fast becoming one of the leading technology startup hubs in Europe. See more e.g. at

    As a living and working environment, Finland consistently ranks high in quality of life, and Helsinki, the capital of Finland, is regularly ranked as one of the most livable cities in the world. See more at and

    posted in Jobs offers - Call for projects read more
  • Geo-Sci-Info

    Brandeis University, Department of Mathematics, invites applications for a tenure-track position in applied mathematics at the rank of assistant professor beginning fall 2018. Candidates must have a Ph.D. in mathematics or a related field, demonstrate potential for excellence in research, and display a commitment to teaching. An ideal candidate will be expected to help to build an applied mathematics program within the department, and to interact with other science faculty at Brandeis. Candidates from all areas of applied mathematics will be considered.
    First consideration will be given to applications received by November 15.

    Applications should include an AMS cover sheet, a curriculum vitae, research and teaching statements, and four letters of recommendation, one of which addresses teaching effectiveness. Applications should be submitted through

    posted in Jobs offers - Call for projects read more
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