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Chafik SAMIR

Associate Professor (HDR) University of Clermont Auvergne
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**About me:** Chafik Samir is an Associate Professor (HDR) at the University of Clermont Auvergne (UCA) and member of LIMOS (CNRS UMR 6158) Laboratory, France. His main research interests involve: * Machine Learning, Data Science, and Artificial Intelligence * Optimization and applications for Manifold-valued Data * Statistical Shape Analysis: Functional, curves, surfaces, 4D, etc. * Inference, Regression and Classification on high Dimension and Manifold Embedding * Spatio-temporal Gaussian processes * Dynamics and Functional Patterns Analysis With different applications to real world probelms : Medical, Paleontology, Indiustrial, Artificial Vision, Data Science, etc.

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Publications

Numerical algorithms for Spline Interpolation on Space of Probability Density Functions

Ines Adouani , Chafik Samir
Journal of Computational and Applied Mathematics, inPress, 42 (3), pp.127. ⟨10.1007/s40314-023-02262-5⟩
Journal articles hal-04037879v1

Bézier Splines Interpolation on Stiefel and Grassmann Manifolds

Chafik Samir , Ines Adouani
Journal of Computational and Applied Mathematics, inPress
Journal articles hal-04048888v1

A scalable Matérn Gaussian process for learning spatial curves distributions

Tam Tien Tran , Yan Feunteun , Chafik Samir , José Braga
Information Sciences, 2022, 614, pp.348-361. ⟨10.1016/j.ins.2022.10.003⟩
Journal articles hal-04037655v1

Nonparametric Bayesian Regression and Classification on Manifolds, With Applications to 3D Cochlear Shapes

Anis Fradi , Chafik Samir , José Braga , Shantanu Joshi , Jean-Michel Loubes
IEEE Transactions on Image Processing, 2022, 31, pp.2598-2607. ⟨10.1109/TIP.2022.3147971⟩
Journal articles hal-03624630v1
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Bayesian Regression and Classification Using Gaussian Process Priors Indexed by Probability Density Functions

Anis Fradi , Y. Feunteun , Chafik Samir , M. Bakloul , François Bachoc
Information Sciences, 2021, ⟨10.1016/j.ins.2020.09.027⟩
Journal articles hal-02967770v1
Image document

Coordinate descent optimization for one-to-one correspondence and supervised classification of 3D shapes

Chafik Samir , Wen Huang
Applied Mathematics and Computation, 2021, 388, pp.125539. ⟨10.1016/j.amc.2020.125539⟩
Journal articles hal-02967821v1

A scalable approximate Bayesian inference for high-dimensional Gaussian processes

Anis Fradi , Chafik Samir , François Bachoc
Communications in Statistics - Theory and Methods, 2020, pp.1-68. ⟨10.1080/03610926.2020.1850793⟩
Journal articles hal-03091210v1

A Constructive Approximation of Interpolating Bézier Curves on Riemannian Symmetric Spaces

Ines Adouani , Chafik Samir
Journal of Optimization Theory and Applications, inPress, ⟨10.1007/s10957-020-01751-5⟩
Journal articles hal-02967797v1

Bayesian cluster analysis for registration and clustering homogeneous subgroups in multidimensional functional data

Anis Fradi , Chafik Samir
Communications in Statistics - Theory and Methods, 2020, pp.1-17. ⟨10.1080/03610926.2020.1772979⟩
Journal articles hal-03017177v1

C1 interpolating Bézier path on Riemannian manifolds, with applications to 3D shape space

Chafik Samir , Ines Adouani
Applied Mathematics and Computation, In press, 348, pp.371-384
Journal articles hal-01936414v1
Image document

Efficacy of diffeomorphic surface matching and 3D geometric morphometrics for taxonomic discrimination of Early Pleistocene hominin mandibular molars

José Braga , Veronika Zimmer , Jean Dumoncel , Chafik Samir , Frikkie de Beer
Journal of Human Evolution, 2019, 130, pp.21-35. ⟨10.1016/j.jhevol.2019.01.009⟩
Journal articles hal-02059270v1

Cochlear shape reveals that the human organ of hearing is sex-typed from birth

J. Braga , Chafik Samir , L. Risser , J. Dumoncel , D. Descouens
Scientific Reports, 2019, 9 (1), ⟨10.1038/s41598-019-47433-9⟩
Journal articles hal-02289895v1
Image document

Comparison of psychometric properties between the Labin, a new electronic dynamometer, and the Jamar: Preliminary results in healthy subjects

I. Conforto , Chafik Samir , F. Chausse , A. A Goldstein , B. Pereira
Hand Surgery and Rehabilitation, 2019, 38 (5), pp.293-297. ⟨10.1016/j.hansur.2019.07.009⟩
Journal articles hal-02289961v1

A Geometrically Constrained Embedding for An Extrinsic Gaussian Process

Chafik Samir , A. Elkhoumri , J. Laasiri
Applied and Numerical Harmonic Analysis, 2018
Journal articles hal-01917185v1

Automatic Detection and Classification of Manufacturing Defects in Metal Boxes

O. M. Essid , Chafik Samir , Laga Hamid
PLoS ONE, 2018
Journal articles hal-01907548v1
Image document

Statistical model for simulation of deformable elastic endometrial tissue shapes

Sebastian Kurtek , Qian Xie , Chafik Samir , Michel Canis
Neurocomputing, 2016, 173, pp.36 - 41. ⟨10.1016/j.neucom.2015.03.098⟩
Journal articles hal-01598109v1
Image document

Mapping and characterizing endometrial implants by registering 2D transvaginal ultrasound to 3D pelvic magnetic resonance images

Amir Yavariabdi , Adrien Bartoli , Chafik Samir , Maxime Artigues , Michel Canis
Computerized Medical Imaging and Graphics, 2015, 45, pp.11 - 25. ⟨10.1016/j.compmedimag.2015.07.007⟩
Journal articles hal-01598206v1
Image document

Elastic Shape Analysis of Cylindrical Surfaces for 3D/2D Registration in Endometrial Tissue Characterization

Chafik Samir , Sebastian Kurtek , Anuj Srivastava , Michel Canis
IEEE Transactions on Medical Imaging, 2014, 33 (5), pp.1035 - 1043. ⟨10.1109/TMI.2014.2300935⟩
Journal articles hal-01598208v1
Image document

Mesh Parameterization with Generalized Discrete Conformal Maps

Colin Cartade , Christian Mercat , Rémy Malgouyres , Chafik Samir
Journal of Mathematical Imaging and Vision, 2013, 46 (1), pp.1 - 11. ⟨10.1007/s10851-012-0362-y⟩
Journal articles hal-01598210v1
Image document

A Gradient-Descent Method for Curve Fitting on Riemannian Manifolds

Chafik Samir , P.-A. Absil , Anuj Srivastava , Eric Klassen
Foundations of Computational Mathematics, 2012, 12 (1), pp.49 - 73. ⟨10.1007/s10208-011-9091-7⟩
Journal articles hal-01598215v1
Image document

An Intrinsic Framework for Analysis of Facial Surfaces

Chafik Samir , Anuj Srivastava , Mohamed Daoudi , Eric Klassen
International Journal of Computer Vision, 2009, 82, pp.80-95. ⟨10.1007/s11263-008-0187-8⟩
Journal articles hal-00665862v1

Elastic Shape Models for Face Analysis Using Curvilinear Coordinates

Chafik Samir , A. Srivastava , S. H. Joshi , M. Daoudi
Journal of Mathematical Imaging and Vision, 2009, 33 (2), pp.253 - 265. ⟨10.1007/s10851-008-0073-6⟩
Journal articles hal-01598224v1
Image document

Elastic Shape Models for Face Analysis Using Curvilinear Coordinates

Anuj Srivastava , Chafik Samir , Shantanu H. Joshi , Mohamed Daoudi
Journal of Mathematical Imaging and Vision, 2009, 33 (2), pp.253-265. ⟨10.1007/s10851-008-0073-6⟩
Journal articles hal-00665940v1

Three-Dimensional Face Recognition Using Shapes of Facial Curves

Chafik Samir , A. Srivastava , M. Daoudi
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2006, 28 (11), pp.1858-1863. ⟨10.1109/TPAMI.2006.235⟩
Journal articles hal-03045765v1

A New Framework for Classifying Probability Density Functions

Anis Fradi , Chafik Samir
ECML, Sep 2023, Turin, France. pp.507-522, ⟨10.1007/978-3-031-43412-9_30⟩
Conference papers hal-04260521v1

An Optimization Method for Accurate Nonparametric Regressions on Stiefel Manifolds

Ines Adouani , Chafik Samir
Machine Learning, Optimization, and Data Science, Sep 2022, Siena, Italy. pp.325-337, ⟨10.1007/978-3-030-95470-3_25⟩
Conference papers hal-04037925v1
Image document

Data quality in the context of classification tasks

Roxane Jouseau , Chafik Samir , Sébastien Salva
38èmes journées de la conférence BDA « Gestion de Données – Principes, Technologies et Applications, Oct 2022, Clermont-Ferrand, France, France
Conference papers hal-03903460v1
Image document

Learning a Gaussian Process Model on the Riemannian Manifold of Non-decreasing Distribution Functions

Chafik Samir , Jean-Michel Loubes , Anne-Françoise Yao , François Bachoc
16th Pacific Rim International Conference on Artificial Intelligence, Aug 2019, Cuvu, Fiji. ⟨10.1007/978-3-030-29911-8_9⟩
Conference papers hal-02276949v1
Image document

Bézier curves and C2 interpolation in Riemannian Symmetric Spaces

Chafik Samir , Ines Adouani
4th International Conference on Geometric Science of Information, Aug 2019, Toulouse, France. ⟨10.1007/978-3-030-26980-7_61⟩
Conference papers hal-02289874v1

Inférence bayésienne pour l'estimation de déformations larges par champs gaussien : application au recalage d'images multi-modales(Bayesian inference for estimation of large deformations by Gaussian random fields: application to multimodal image registration)

Thomas Deregnaucourt , Chafik Samir , Anne-Françoise Yao
Actes de la Conférence Nationale d'Intelligence Artificielle et Rencontres des Jeunes Chercheurs en Intelligence Artificielle (CNIA+RJCIA 2018), 2018, Nancy, France. pp.43--49
Conference papers hal-02088697v1

A new Manifold Regression Framework for Classifying High-dimensional Data

A. Elkhoumri , Chafik Samir , J. Laasiri
ISIVC, Nov 2018, Rabat, Morocco
Conference papers hal-01917117v1

Méthode non paramétrique pour l'analyse et la classification des données fonctionnelles(Non-parametric method for analysis and classification of functional data)

Papa Mbaye , Anne-Françoise Yao , Chafik Samir
Actes de la Conférence Nationale d'Intelligence Artificielle et Rencontres des Jeunes Chercheurs en Intelligence Artificielle (CNIA+RJCIA 2018), 2018, Nancy, France. pp.19--26
Conference papers hal-02088696v1

Manifold-based inference for a supervised Gaussian process classifier

Anis Fradi , Chafik Samir , Anne-Franccoise Yao
ICASSP 2018 - 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2018, Calgary, Canada. pp.4239-4243, ⟨10.1109/ICASSP.2018.8461840⟩
Conference papers hal-03017187v1

Manifold-Based Inference for a Supervised Gaussian Process Classifier

Anis Fradi , Chafik Samir , Anne-Franccoise Yao
ICASSP 2018 - 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Apr 2018, Calgary, Canada. ⟨10.1109/ICASSP.2018.8461840⟩
Conference papers hal-01907501v1

Application d'une régression PLS fonctionnelle : recherche de liens entre deux ensembles de variables omiques

Anne de La Foye , Anne-Françoise Yao , Marie-Claire Not , Alyssa Imbert , Chafik Samir
49.Journées de Statistique. JDS 2017, 2017
Conference papers hal-02787426v1

Représentation et interprétation en régression pls fonctionnelle

Anne de La Foye , Alyssa Imbert , Anne-Françoise Yao , Chafik Samir , Marie-Claire Not
49.Journées de Statistique. JDS 2017, 2017, Avignon, France
Conference papers hal-02734961v1

A Statistical Framework for the Cross-sectional Geometric Variability of Object Shapes and Functional Dynamics

Chafik Samir
ISI World Statistics Congress, Jun 2017, Marrakech, Morocco
Conference papers hal-01925597v1

A Statistical Framework for Elastic Shape Analysis of Spatio-Temporal Evolutions of Planar Closed Curves

Chafik Samir , Sebastian Kurtek , Justin Strait , Shantanu H. Joshi
2016 IEEE Conference on Computer Vision and Pattern Recognition Workshops, 2016, Las Vegas, United States
Conference papers hal-01599077v1

A Regression Model for Registering Multimodal Images

Chafik Samir , Thomas Deregnaucourt , Anne-Françoise Yao
Medical Image Understanding and Analysis, 2016, Loughbrough, United Kingdom. pp.42 - 47, ⟨10.1016/j.procs.2016.07.008⟩
Conference papers hal-01599078v1

An elastic functional data analysis framework for preoperative evaluation of patients with Rheumatoid Arthritis

Chafik Samir , Sebastian Kurtek , Anuj Srivastava , Noe Borges
IEEE Winter Conference on Applications of Computer Vision, 2016, New York, United States
Conference papers hal-01599080v1

Curves-Driven Smooth Deformation Field for Multimodal Image Registration

Chafik Samir , Amir Yavariabdi , Constance Hordonneau
Medical Image Understanding and Analysis, 2016, Lincoln, United Kingdom
Conference papers hal-01599083v1

Fitting Smooth Paths on Riemannian Manifolds: Endometrial Surface Reconstruction and Preoperative MRI-Based Navigation

Antoine Arnould , Pierre-Yves Gousenbourger , Chafik Samir , Pierre-Antoine Absil , Michel Canis
Geometric Science of Information, 2015, Paris, France. ⟨10.1007/978-3-319-25040-3_53⟩
Conference papers hal-01599081v1

Curves-Driven Smooth Deformation Field for Multimodal TVUS-MR Image Registration

Amir Yavariabdi , Chafik Samir , Constance Hordonneau
Medical Image Understanding and Analysis - MIUA 2015. 19th Annual Conference, 2015, Lincoln, United Kingdom. pp.20--25
Conference papers hal-02088702v1

A new curves-based method for adaptive multimodal registration

Chafik Samir , Samir Khoualed , A. Sarbinowski , Constance Hordonneau
International Conference on Image Processing Theory, 2015, Orleans, France
Conference papers hal-01599082v1

Piecewise-Bézier C1 Interpolation on Riemannian Manifolds with Application to 2D Shape Morphing

Pierre-Yves Gousenbourger , Chafik Samir , Pierre-Antoine Absil
IEEE ICPR, 2014, tockholm, Sweden. ⟨10.1109/ICPR.2014.700⟩
Conference papers hal-01599085v1

An augmented representation of activity in video using semantic information

Samir Khoualed , Thierry Chateau , Umberto Castellani , Chafik Samir
IEEE ICIP, 2014, Paris, France
Conference papers hal-01599084v1

Statistical Shape Model for Simulation of Realistic Endometrial Tissue

Sebastian Kurtek , Chafik Samir , Lemlih Ouchchane
ICPRAM 2014 - Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods, 2014, Loire Valley, France. pp.421--428, ⟨10.5220/0004821904210428⟩
Conference papers hal-02088698v1
Image document

Smooth 2D Coordinate Systems on Discrete Surfaces

Colin Cartade , Rémy Malgouyres , Christian Mercat , Chafik Samir
14th International Workshop on Combinatorial Image Analysis, Apr 2011, Nancy, France. pp.59-70, ⟨10.1007/978-3-642-19867-0_5⟩
Conference papers hal-00659011v1
Image document

Simple and flexible mesh parameterization method

Colin Cartade , Rémy Malgouyres , Christian Mercat , Chafik Samir
14th International Workshop on Combinatorial Image Analysis, May 2011, Madrid, Spain. pp.157-167
Conference papers hal-00659008v1
Image document

Three-dimensional face recognition using elastic deformations of facial surfaces

Mohamed Daoudi , Lahoucine Ballihi , Chafik Samir , Anuj Srivastava
2008 IEEE International Conference on Multimedia & Expo, Jun 2008, Hannover, Germany. pp.97-100
Conference papers hal-00665585v1
Image document

Automatic 3D face recognition using topological techniques

Chafik Samir , Jean-Philippe Vandeborre , Mohamed Daoudi
IEEE International Conference on Multimedia & Expo (ICME 2005), Jul 2005, Amsterdam, Netherlands
Conference papers hal-00725593v1

A Shrinkage Method for Learning, Registering and Clustering Shapes of Curves

Anis Fradi , Chafik Samir , José Braga
Proceedings of the 12th International Symposium on Information and Communication Technology, ACM, pp.615-622, 2023, ⟨10.1145/3628797.3628903⟩
Book sections hal-04344823v1

Bayesian Inference on Local Distributions of Functions and Multidimensional Curves with Spherical HMC Sampling

Anis Fradi , Ines Adouani , Chafik Samir
Geometric Structures of Statistical Physics, Information Geometry, and Learning, pp.356-373, 2021, ⟨10.1007/978-3-030-77957-3_19⟩
Book sections hal-03282023v1