Results 21 to 30 of about 580,189 (359)
Constrained High-Index Saddle Dynamics for the Solution Landscape with Equality Constraints [PDF]
Journal of Scientific Computing, 2020 We propose a constrained high-index saddle dynamics (CHiSD) method to search for index- k saddle points of an energy functional subject to equality constraints.
Zhen Huang, Jianyuan Yin, Lei Zhang
semanticscholar +1 more source
On the Existence of a Saddle Value [PDF]
Journal of Optimization Theory and Applications, 2014 In this work, we achieve a complete characterization of the existence of a saddle value, for bifunctions which are convex, proper, and lower semi continuous in their first argument, by considering new suitably defined notions of special directions of recession. As special cases, we obtain some recent results of Lagrangian duality theory on zero duality
Bonenti, F. +1 more
openaire +5 more sources
Dirac cone, flat band and saddle point in kagome magnet YMn6Sn6
Nature Communications, 2020 Kagome-lattices of 3d-transition metals hosting Weyl/Dirac fermions and topological flat bands exhibit non-trivial topological characters and novel quantum phases, such as the anomalous Hall effect and fractional quantum Hall effect.
Man Li +11 more
semanticscholar +1 more source
Investigation looking at the repeatability of 20 Society of Master Saddlers (SMS) qualified saddle fitters’ observations during static saddle fit [PDF]
, 2017 Saddle fit is widely considered to be a crucial factor for the health and performance of riding horses; however, there have been no studies looking at the agreement between professionals who fit and assess saddles.
Beavis, J +3 more
core +1 more source
ISPRS International Journal of Geo-Information, 2018 A karst depression is an important sign of the development stage of karst landforms. The morphological characteristics of depressions can help reflect the development and evolution process of such landforms.
Xianwu Yang +3 more
doaj +1 more source
Saddle-point dynamics: conditions for asymptotic stability of saddle points [PDF]
, 2016 This paper considers continuously differentiable functions of two vector variables that have (possibly a continuum of) min-max saddle points. We study the asymptotic convergence properties of the associated saddle-point dynamics (gradient-descent in the ...
Cherukuri, Ashish +2 more
core +2 more sources
Mathematics, 2020 This paper presents a novel method for optimal tunning of a Fractional Order Proportional-Integral-Derivative (FOPID) controller for an Automatic Voltage Regulator (AVR) system. The presented method is based on the Yellow Saddle Goatfish Algorithm (YSGA),
M. Micev, Martin P. Ćalasan, D. Oliva
semanticscholar +1 more source
Distributed Learning in Non-Convex Environments— Part II: Polynomial Escape From Saddle-Points [PDF]
IEEE Transactions on Signal Processing, 2019 The diffusion strategy for distributed learning from streaming data employs local stochastic gradient updates along with exchange of iterates over neighborhoods.
Stefan Vlaski, A. H. Sayed
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Interpretation of saddle-splay and the Oseen-Frank free energy in liquid crystals [PDF]
Liquid Crystals Reviews, 2018 This article re-examines a classic question in liquid-crystal physics: What are the elastic modes of a nematic liquid crystal? The analysis uses a recent mathematical construction, which breaks the director gradient tensor into four distinct types of ...
Jonathan V Selinger
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