Results 101 to 110 of about 935 (254)
Quasisimilarity of Invariant Subspaces for Uniform Jordan Operators of Infinite Multiplicity
, 1996 LetTbe a bounded linear operator on a separable Hilbert spaceH, and letMandNbe two invariant subspaces forT. We will say thatMandNare quasisimilar if there exist quasiaffinities (i.e. bounded one-to-one operators with dense ranges)XandY, commuting withT,
Smotzer, Thomas, Bercovici, Hari
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Vertical Deformation Mapping: Steering Optimiser Toward Flat Minima
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Standard deep learning optimisation is typically conducted on shape‐fixed loss surfaces. However, shape‐fixed loss surfaces may impede optimisers from reaching flat regions closely associated with strong generalisation. In this work, we propose a new paradigm named deformation mapping to deform the loss surface during optimisation.
Liangming Chen +4 more
wiley +1 more source
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Leveraging both global contextual dependencies and local temporal‐spectral patterns can further enhance speech quality and intelligibility, motivating the integration of diverse neural network structures for improved mask estimation. Furthermore, due to the limitations of existing time‐frequency phase‐aware masks, a new constrained phase ...
Matin Pashaian, Sanaz Seyedin
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Characterization of similarity Orbits of Invariant Subspaces of Norm- Attainable Operators.
, 2019 The notion of similarity orbits(S (T)) of Hilbert space operators have been extensively investigated by many researchers such as Herrero, Fialkow and Had- win among others.
Omoke, Priscah M.
core
Super-optimal approximation by meromorphic functions. [PDF]
, 1996 Let G be a matrix function of type m × n and suppose that G is expressible as the sum of an H∞ function and a continuous function on the unit circle. Suppose also that the (k – 1)th singular value of the Hankel operator with symbol G is greater than the ...
Young, N. J., Peller, V. V.
core
Canonical Forms for Families of Anti-Commuting Diagonalizable Linear Operators
, 2012 It is well known that a commuting family of diagonalizable linear operators on a finite dimensional vector space is simultaneously diagonalizable. In this paper we consider a family A = {A(a)} A(a) : V -> V a = 1...
Kumbasar, Yalcin, Bilge, Ayşe Hümeyra
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High Voltage, EarlyView.ABSTRACT A reduced‐order model (ROM) for the temperature field based on time‐space proper orthogonal decomposition (POD) is presented to improve the computational efficiency of transient temperature rise in oil‐immersed power transformers with a complete oil natural convection cooling loop.
Haijuan Lan +5 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT Diagnosing high‐impedance ground faults (HIGFs) in distribution networks is extremely challenging because high transition resistance significantly reduces electrical signal strength and unpredictable initial fault phase angles coupled with asymmetric voltage disturbances often lead to misclassification.
Zhengyang Li +5 more
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Linear Operators and Linear Systems
, 2004 Linear systems can be regarded as a causal shift-invariant operator on a Hilbert space of signals, and by doing so this 2004 book presents an introduction to the common ground between operator theory and linear systems theory. The book therefore includes
Jonathan R. Partington
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AlignPCA‐2D: PCA‐reduced Euclidean vector alignment for 2D classification in cryo‐EM
Acta Crystallographica Section D, EarlyView.We introduce AlignPCA‐2D, a PCA‐space Euclidean alignment method for rapid and interpretable 2D classification of cryo‐EM particle images. The approach preserves essential structural variability while greatly reducing computational cost, offering a lightweight alternative to existing large‐scale cryo‐EM classification pipelines.Cryogenic electron ...
E. Ramírez-Aportela +6 more
wiley +1 more source