Publications related to Natural transformation

Learning Graphs From Data: A Signal Representation Perspective

The construction of a meaningful graph topology plays a crucial role in the effective representation, processing, analysis, and visualization of structured data. When a natural choice of the graph is not readily available from the data sets, it is thus des ...

2019

Combine and conquer: Relating BIP and Reo

Simon Bliudze

Coordination languages simplify design and development of concurrent systems. Particularly, exogenous coordination languages, like BIP and Reo, enable system designers to express the interactions among components in a system explicitly. A formal relation b ...

Elsevier Science Inc2017

Restriction of irreducible modules for Spin2+1(K) to Spin2(K)

Mikaël Cavallin

Let K be an algebraically closed field of characteristic

p\geq0

and let

Y=SPin_{2n+1}(K) (n\geq3)

be a simply connected simple algebraic group of type

B_n

over

K

. Also let

X

be the subgroup of type

D_n

, embedded in

Y

in the usual way, as the ...

2017

Wide-Baseline Foreground Object Interpolation Using Silhouette Shape Prior

Pascal Frossard, Christophe De Vleeschouwer, Thomas Maugey

We consider the synthesis of intermediate views of an object captured by two widely spaced and calibrated cameras. This problem is challenging because foreshortening effects and occlusions induce significant differences between the reference images when th ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Rationally isomorphic hermitian forms and torsors of some non-reductive groups

Eva Bayer Fluckiger

Let R be a semilocal Dedekind domain. Under certain assumptions, we show that two (not necessarily unimodular) hermitian forms over an R-algebra with involution, which are rationally isomorphic and have isomorphic semisimple coradicals, are in fact isomorp ...

Academic Press Inc Elsevier Science2017

Shape Projectors for Landmark-Based Spline Curves

Michaël Unser, Daniel Andreas Schmitter

We present a generic method to construct orthogonal projectors for two-dimensional landmark-based parametric spline curves. We construct vector spaces that define a geometric transformation (e.g., affine, similarity, and scaling) that is applied to a refer ...

2017

Irreducible Geometric Subgroups of Classical Algebraic Groups

Donna Testerman, Soumaïa Nadia Ghandour

Let G be a simple classical algebraic group over an algebraically closed field K of characteristic p≥0 with natural module W. Let H be a closed subgroup of G and let V be a non-trivial irreducible tensor-indecomposable p-restricted rational KG-module such ...

American Mathematical Society2015

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Michaël Unser, Nikolaos Stergiopoulos, Emrah Bostan, Orestis Vardoulis, Stamatios Lefkimmiatis

We propose a new variational framework for the problem of reconstructing flow fields from noisy measurements. The formalism is based on regularizers penalizing the singular values of the Jacobian of the field. Specifically, we rely on the nuclear norm. Our ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Cellular properties of nilpotent spaces

Jérôme Scherer

We show that cellular approximations of nilpotent Postnikov stages are always nilpotent Postnikov stages, in particular classifying spaces of nilpotent groups are turned into classifying spaces of nilpotent groups. We use a modified Bousfield-Kan homology ...

Geometry & Topology Publications2015

On the Use of Extents for Process Monitoring and Fault Diagnosis

Dominique Bonvin, Julien Léo Billeter, Sriniketh Srinivasan

Process monitoring and fault diagnosis are broadly used to control quality and enforce safety compliance in industrial processes. Processes are commonly monitored by online spectroscopy, with either PCA or calibration techniques such as PLS being used to p ...

2014

Natural transformation

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Learning Graphs From Data: A Signal Representation Perspective

Combine and conquer: Relating BIP and Reo

Restriction of irreducible modules for Spin2+1(K) to Spin2(K)

Wide-Baseline Foreground Object Interpolation Using Silhouette Shape Prior

Rationally isomorphic hermitian forms and torsors of some non-reductive groups

Shape Projectors for Landmark-Based Spline Curves

Irreducible Geometric Subgroups of Classical Algebraic Groups

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Cellular properties of nilpotent spaces

On the Use of Extents for Process Monitoring and Fault Diagnosis

On the Use of Extents for Process Monitoring and Fault Diagnosis

Restriction of irreducible modules for Spin2+1(K) to Spin2(K)

Cellular properties of nilpotent spaces

Wide-Baseline Foreground Object Interpolation Using Silhouette Shape Prior

Shape Projectors for Landmark-Based Spline Curves

Combine and conquer: Relating BIP and Reo

Learning Graphs From Data: A Signal Representation Perspective

Rationally isomorphic hermitian forms and torsors of some non-reductive groups

Irreducible Geometric Subgroups of Classical Algebraic Groups

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data