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5th GSI 2021: Paris, France
- Frank Nielsen

, Frédéric Barbaresco
:
Geometric Science of Information - 5th International Conference, GSI 2021, Paris, France, July 21-23, 2021, Proceedings. Lecture Notes in Computer Science 12829, Springer 2021, ISBN 978-3-030-80208-0
Probability and Statistics on Riemannian Manifolds
- Salem Said, Nicolas Le Bihan, Jonathan H. Manton:

From Bayesian Inference to MCMC and Convex Optimisation in Hadamard Manifolds. 3-11 - Benjamin Eltzner, Shayan Hundrieser, Stephan Huckemann:

Finite Sample Smeariness on Spheres. 12-19 - Simon Heuveline, Salem Said, Cyrus Mostajeran

:
Gaussian Distributions on Riemannian Symmetric Spaces in the Large N Limit. 20-28 - Do Tran, Benjamin Eltzner, Stephan Huckemann:

Smeariness Begets Finite Sample Smeariness. 29-36 - Quinten Tupker, Salem Said, Cyrus Mostajeran

:
Online Learning of Riemannian Hidden Markov Models in Homogeneous Hadamard Spaces. 37-44
Sub-Riemannian Geometry and Neuromathematics
- Giovanna Citti, Gianmarco Giovannardi

, Manuel Ritoré, Alessandro Sarti:
Submanifolds of Fixed Degree in Graded Manifolds for Perceptual Completion. 47-55 - Rand Asswad, Ugo V. Boscain

, Giuseppina Turco
, Dario Prandi
, Ludovic Sacchelli
:
An Auditory Cortex Model for Sound Processing. 56-64 - Dmitri Alekseevsky

:
Conformal Model of Hypercolumns in V1 Cortex and the Möbius Group. Application to the Visual Stability Problem. 65-72 - Alexey Mashtakov

:
Extremal Controls for the Duits Car. 73-81 - Rosa Kowalewski

, Barbara Gris
:
Multi-shape Registration with Constrained Deformations. 82-90
Shapes Spaces
- Yann Thanwerdas, Xavier Pennec:

Geodesics and Curvature of the Quotient-Affine Metrics on Full-Rank Correlation Matrices. 93-102 - Nicolas Guigui

, Elodie Maignant
, Alain Trouvé, Xavier Pennec:
Parallel Transport on Kendall Shape Spaces. 103-110 - Pernille E. H. Hansen

, Benjamin Eltzner, Stefan Sommer
:
Diffusion Means and Heat Kernel on Manifolds. 111-118 - Nicolas Guigui

, Xavier Pennec:
A Reduced Parallel Transport Equation on Lie Groups with a Left-Invariant Metric. 119-126 - Pernille E. H. Hansen

, Rasmus Waagepetersen
, Anne Marie Svane
, Jon Sporring
, Hans J. T. Stephensen
, Stine Hasselholt
, Stefan Sommer
:
Currents and K-functions for Fiber Point Processes. 127-134
Geometry of Quantum States
- Christophe Corbier:

Q-Information Geometry of Systems. 137-144 - Florio Maria Ciaglia

, Fabio Di Nocera
:
Group Actions and Monotone Metric Tensors: The Qubit Case. 145-153 - Hà Quang Minh

:
Quantum Jensen-Shannon Divergences Between Infinite-Dimensional Positive Definite Operators. 154-162 - Davide Rattacaso

, Patrizia Vitale
, Alioscia Hamma
:
Towards a Geometrization of Quantum Complexity and Chaos. 163-171 - Michel Berthier

, Edoardo Provenzi
:
Hunt's Colorimetric Effect from a Quantum Measurement Viewpoint. 172-180
Geometric and Structure Preserving Discretizations
- Manuel de León

, Manuel Lainz
, Miguel C. Muñoz-Lecanda
:
The Herglotz Principle and Vakonomic Dynamics. 183-190 - Ghislain Haine

, Denis Matignon:
Structure-Preserving Discretization of a Coupled Heat-Wave System, as Interconnected Port-Hamiltonian Systems. 191-199 - Miguel Evangelista-Alvarado

, José Crispín Ruíz-Pantaleón
, Pablo Suárez-Serrato
:
Examples of Symbolic and Numerical Computation in Poisson Geometry. 200-208 - Alessandro Bravetti

, Marcello Seri
, Federico Zadra
:
New Directions for Contact Integrators. 209-216
Information Geometry in Physics
- Emmanuelle Rouhaud, Richard Kerner

, Israa Choucair, Roula El Nahas, Alexandre Charles
, Benoit Panicaud:
Space-Time Thermo-Mechanics for a Material Continuum. 219-226 - Pedro Pessoa

:
Entropic Dynamics Yields Reciprocal Relations. 227-234
Lie Group Machine Learning
- Charles-Michel Marle:

Gibbs States on Symplectic Manifolds with Symmetries. 237-244 - Frédéric Barbaresco:

Gaussian Distributions on the Space of Symmetric Positive Definite Matrices from Souriau's Gibbs State for Siegel Domains by Coadjoint Orbit and Moment Map. 245-255 - Hideyuki Ishi:

On Gaussian Group Convex Models. 256-264 - Emmanuel Chevallier:

Exponential-Wrapped Distributions on $\text {SL}(2, \mathbb {C})$ and the Möbius Group. 265-272 - Daisuke Tarama

, Jean-Pierre Françoise
:
Information Geometry and Hamiltonian Systems on Lie Groups. 273-280
Geometric and Symplectic Methods for Hydrodynamical Models
- François Demoures

, François Gay-Balmaz
:
Multisymplectic Variational Integrators for Fluid Models with Constraints. 283-291 - Michael Kraus

:
Metriplectic Integrators for Dissipative Fluids. 292-301 - François Gay-Balmaz

, Cesare Tronci
:
From Quantum Hydrodynamics to Koopman Wavefunctions I. 302-310 - Cesare Tronci

, François Gay-Balmaz
:
From Quantum Hydrodynamics to Koopman Wavefunctions II. 311-319
Harmonic Analysis on Lie Groups
- Gérard Letac:

The Fisher Information of Curved Exponential Families and the Elegant Kagan Inequality. 323-330 - Hideyuki Ishi, Kazuhide Oshiro:

Continuous Wavelet Transforms for Vector-Valued Functions. 331-339 - Juan Pablo Vigneaux

:
Entropy Under Disintegrations. 340-349 - Frédéric Barbaresco:

Koszul Information Geometry, Liouville-Mineur Integrable Systems and Moser Isospectral Deformation Method for Hermitian Positive-Definite Matrices. 350-359 - Zdravko Terze, Viktor Pandza, Marijan Andric, Dario Zlatar:

Flapping Wing Coupled Dynamics in Lie Group Setting. 360-367
Statistical Manifold and Hessian Information Geometry
- Michel Boyom, Emmanuel Gnandi, Stéphane Puechmorel:

Canonical Foliations of Statistical Manifolds with Hyperbolic Compact Leaves. 371-379 - Michel Boyom:

Open Problems in Global Analysis. Structured Foliations and the Information Geometry. 380-388 - Barbara Opozda:

Curvature Inequalities and Simons' Type Formulas in Statistical Geometry. 389-396 - T. V. Mahesh, Subrahamanian Moosath K. S.

:
Harmonicity of Conformally-Projectively Equivalent Statistical Manifolds and Conformal Statistical Submersions. 397-404 - Dario A. Bini, Bruno Iannazzo, Jie Meng:

Algorithms for Approximating Means of Semi-infinite Quasi-Toeplitz Matrices. 405-414
Geometric Mechanics
- Frédéric Barbaresco:

Archetypal Model of Entropy by Poisson Cohomology as Invariant Casimir Function in Coadjoint Representation and Geometric Fourier Heat Equation. 417-429 - Mathias Højgaard Jensen, Sarang C. Joshi, Stefan Sommer:

Bridge Simulation and Metric Estimation on Lie Groups. 430-438 - Nima Shirafkan

, Pierre Gosselet
, Franz Bamer
, Abdelbacet Oueslati
, Bernd Markert
, Géry de Saxcé
:
Constructing the Hamiltonian from the Behaviour of a Dynamical System by Proper Symplectic Decomposition. 439-447 - Eric Bergshoeff

, Johannes Lahnsteiner
, Luca Romano
, Jan Rosseel
, Ceyda Simsek
:
Non-relativistic Limits of General Relativity. 448-455
Deformed Entropy, Cross-Entropy, and Relative Entropy
- Olivier Rioul

:
A Primer on Alpha-Information Theory with Application to Leakage in Secrecy Systems. 459-467 - Léonard Monsaingeon

, Dmitry Vorotnikov
:
Schrödinger Encounters Fisher and Rao: A Survey. 468-476 - Zhixu Tao, Ting-Kam Leonard Wong:

Projections with Logarithmic Divergences. 477-486 - Éric Grivel:

Chernoff, Bhattacharyya, Rényi and Sharma-Mittal Divergence Analysis for Gaussian Stationary ARMA Processes. 487-495
Transport Information Geometry
- Shun-ichi Amari, Takeru Matsuda:

Wasserstein Statistics in One-Dimensional Location-Scale Models. 499-506 - Nicolás García Trillos, Félix Morales, Javier Morales:

Traditional and Accelerated Gradient Descent for Neural Architecture Search. 507-514 - Gabriel Khan, Jun Zhang:

Recent Developments on the MTW Tensor. 515-523 - Alex Tong Lin, Wuchen Li, Stanley J. Osher, Guido Montúfar:

Wasserstein Proximal of GANs. 524-533
Statistics, Information and Topology
- Juan Pablo Vigneaux

:
Information Cohomology of Classical Vector-Valued Observables. 537-546 - Olivier Peltre:

Belief Propagation as Diffusion. 547-556 - Arthur J. Parzygnat

:
Towards a Functorial Description of Quantum Relative Entropy. 557-564 - Noemie Combe

, Philippe Combe, Hanna Nencka:
Frobenius Statistical Manifolds and Geometric Invariants. 565-573
Geometric Deep Learning
- Pierre-Yves Lagrave

, Yann Cabanes
, Frédéric Barbaresco
:
${{\, \mathrm{SU}\, }}(1, 1)$ Equivariant Neural Networks and Application to Robust Toeplitz Hermitian Positive Definite Matrix Classification. 577-584 - Fabian B. Fuchs, Edward Wagstaff, Justas Dauparas, Ingmar Posner:

Iterative SE(3)-Transformers. 585-595 - Leonardo Gigli, Beatriz Marcotegui, Santiago Velasco-Forero:

End-to-End Similarity Learning and Hierarchical Clustering for Unfixed Size Datasets. 596-604 - Govind Menon:

Information Theory and the Embedding Problem for Riemannian Manifolds. 605-612 - Gautier Marti

, Victor Goubet
, Frank Nielsen
:
cCorrGAN: Conditional Correlation GAN for Learning Empirical Conditional Distributions in the Elliptope. 613-620
Topological and Geometrical Structures in Neurosciences
- Matilde Marcolli

:
Topological Model of Neural Information Networks. 623-633 - Pierre Baudot

:
On Information Links. 634-644 - Carina Curto, Joshua Paik, Igor Rivin:

Betti Curves of Rank One Symmetric Matrices. 645-655 - Nicolas Berkouk:

Algebraic Homotopy Interleaving Distance. 656-664 - Eduarda Gervini Zampieri Centeno

, Giulia Moreni, Chris Vriend
, Linda Douw
, Fernando Antônio Nóbrega Santos:
A Python Hands-on Tutorial on Network and Topological Neuroscience. 665-673
Computational Information Geometry
- Frank Nielsen

, Richard Nock:
Computing Statistical Divergences with Sigma Points. 677-684 - Tomasz Skalski:

Remarks on Laplacian of Graphical Models in Various Graphs. 685-692 - Yann Cabanes, Frank Nielsen

:
Classification in the Siegel Space for Vectorial Autoregressive Data. 693-700 - Maryam K. Garba, Tom M. W. Nye, Jonas Lueg, Stephan F. Huckemann:

Information Metrics for Phylogenetic Trees via Distributions of Discrete and Continuous Characters. 701-709 - Jonas Lueg, Maryam K. Garba, Tom M. W. Nye, Stephan F. Huckemann:

Wald Space for Phylogenetic Trees. 710-717 - Hisatoshi Tanaka:

A Necessary Condition for Semiparametric Efficiency of Experimental Designs. 718-725 - Jesse van Oostrum

, Nihat Ay
:
Parametrisation Independence of the Natural Gradient in Overparametrised Systems. 726-735 - Atsumi Ohara, Xiaoyan Zhang:

Properties of Nonlinear Diffusion Equations on Networks and Their Geometric Aspects. 736-743 - Goffredo Chirco

:
Rényi Relative Entropy from Homogeneous Kullback-Leibler Divergence Lagrangian. 744-751 - Giovanni Pistone

:
Statistical Bundle of the Transport Model. 752-759
Manifolds and Optimization
- Thomas Bendokat

, Ralf Zimmermann
:
Efficient Quasi-Geodesics on the Stiefel Manifold. 763-771 - Stéphanie Jehan-Besson

, Régis Clouard, Nathalie Boddaert, Jacques Grill, Frédérique Frouin
:
Optimization of a Shape Metric Based on Information Theory Applied to Segmentation Fusion and Evaluation in Multimodal MRI for DIPG Tumor Analysis. 772-780 - François Anton, Pietro Gori, Joan Glaunès:

Metamorphic Image Registration Using a Semi-lagrangian Scheme. 781-788 - Bin Gao, Nguyen Thanh Son

, Pierre-Antoine Absil, Tatjana Stykel:
Geometry of the Symplectic Stiefel Manifold Endowed with the Euclidean Metric. 789-796
Divergence Statistics
- Frank Nielsen

, Kazuki Okamura
:
On f-divergences Between Cauchy Distributions. 799-807 - Wuchen Li:

Transport Information Hessian Distances. 808-817 - Pierre Bertrand

, Michel Broniatowski, Jean-François Marcotorchino:
Minimization with Respect to Divergences and Applications. 818-828 - Wolfgang Stummer:

Optimal Transport with Some Directed Distances. 829-840 - Amor Keziou, Aida Toma:

Robust Empirical Likelihood. 841-848
Optimal Transport and Learning
- Yaël Frégier, Jean-Baptiste Gouray:

Mind2Mind: Transfer Learning for GANs. 851-859 - Yongxin Chen

, Tryphon T. Georgiou
, Michele Pavon
:
Fast and Asymptotic Steering to a Steady State for Networks Flows. 860-868 - Philippe Jacquet, Liubov Tupikina:

Geometry of Outdoor Virus Avoidance in Cities. 869-877 - Shu Liu, Haodong Sun, Hongyuan Zha:

A Particle-Evolving Method for Approximating the Optimal Transport Plan. 878-887
Geometric Structures in Thermodynamics and Statistical Physics
- Alberto Chiarini

, Giovanni Conforti, Luca Tamanini
:
Schrödinger Problem for Lattice Gases: A Heuristic Point of View. 891-899 - François Gay-Balmaz

, Hiroaki Yoshimura
:
A Variational Perspective on the Thermodynamics of Non-isothermal Reacting Open Systems. 900-908 - Rita Fioresi

, Francesco Faglioni
, Francesco Morri
, Lorenzo Squadrani
:
On the Thermodynamic Interpretation of Deep Learning Systems. 909-917 - Hiroaki Yoshimura

, François Gay-Balmaz
:
Dirac Structures in Thermodynamics of Non-simple Systems. 918-925

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