Results 31 to 40 of about 36,312 (298)
Scalable Dense Non-rigid Structure-from-Motion: A Grassmannian Perspective [PDF]
2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2018 This paper addresses the task of dense non-rigid structure-front-motion (NRSfM) using multiple images. State-of-the-art methods to this problem are often hurdled by scalability, expensive computations, and noisy measurements.
Suryansh Kumar +3 more
semanticscholar +1 more source
Unified formalism for 6D superamplitudes based on a symplectic Grassmannian [PDF]
Journal of High Energy Physics, 2019 Recently, twistor-like formulations of tree amplitudes involving n massless particles have been proposed for various 6D supersymmetric theories. The formulas are based on two different forms of the scattering equations: one based on rational maps and the
J. Schwarz, C. Wen
semanticscholar +1 more source
Parametric Regression on the Grassmannian [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2016 We address the problem of fitting parametric curves on the Grassmann manifold for the purpose of intrinsic parametric regression. As customary in the literature, we start from the energy minimization formulation of linear least-squares in Euclidean spaces and generalize this concept to general nonflat Riemannian manifolds, following an optimal-control ...
Hong, Yi +4 more
openaire +6 more sources
A characterization of symplectic Grassmannians [PDF]
Mathematische Zeitschrift, 2016 We provide a characterization of Symplectic Grassmannians in terms of their Varieties of Minimal Rational Tangents.
Occhetta, Gianluca +2 more
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Biadjoint scalars and associahedra from residues of generalized amplitudes
Journal of High Energy Physics, 2023 In the Grassmannian formulation of the S-matrix for planar N $$ \mathcal{N} $$ = 4 Super Yang-Mills, N kâ2 MHV scattering amplitudes for k negative and n â k positive helicity gluons can be expressed, by an application of the global residue theorem, as a
Freddy Cachazo, Nick Early
doaj +1 more source
POSITIVE GRASSMANNIAN AND POLYHEDRAL SUBDIVISIONS [PDF]
International Congress of Mathematicans, 2018 The nonnegative Grassmannian is a cell complex with rich geometric, algebraic, and combinatorial structures. Its study involves interesting combinatorial objects, such as positroids and plabic graphs.
A. Postnikov
semanticscholar +1 more source
Grading of invasive breast carcinoma through Grassmannian VLAD encoding. [PDF]
PLoS One, 2017 In this paper we address the problem of automated grading of invasive breast carcinoma through the encoding of histological images as VLAD (Vector of Locally Aggregated Descriptors) representations on the Grassmann manifold. The proposed method considers
Dimitropoulos K +5 more
europepmc +2 more sources
advg, 2004 Corrected small errors, added new section on characteristic ...
Bernd Sturmfels, David E Speyer
openaire +3 more sources
, 2002 For the proceedings of Paolo Francia memorial conference, Genova, Sep 2001, edited by Mauro Beltrametti, to appear de Gruyter 2002.
Corti, Alessio, Reid, Miles
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Yangians, Grassmannians and T-duality [PDF]
Journal of High Energy Physics, 2010 28 pages, 1 figure; v2: minor ...
Drummond, J. M., Ferro, L.
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