Antioxidant
发表于 2025-3-30 11:42:56
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设施
发表于 2025-3-30 13:25:38
J. Frédéric Bonnans,J. Charles Gilbert,Claude Lemaréchal,Claudia A. Sagastizábal by the authorsThe emergence of topological quantum ?eld theory has been one of the most important breakthroughs which have occurred in the context of ma- ematical physics in the last century, a century characterizedbyindependent developments of the main ideas in both disciplines, physics and mathem
不给啤
发表于 2025-3-30 20:31:52
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PANG
发表于 2025-3-31 00:38:48
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肉身
发表于 2025-3-31 04:25:19
General Introductiont will be the usual dot-product: .); | · | or ∥ · ∥ will denote the associated norm. The . (vector of partial derivatives) of a function .: ℝ. → ℝ will be denoted by ∇ . or .′; the . (matrix of second derivatives) by ∇.. or .″. We will also use continually the notation .(.) = .′(.).
cogent
发表于 2025-3-31 07:51:20
Line-Searches be studied in the next chapters), we focus on the computation of the stepsize. Here appear the most serious practical difficulties, while directions are generally easy to compute, once the theory is well-mastered. A firm experience is required to write a good computer code for line-searches, which
cancellous-bone
发表于 2025-3-31 11:36:46
Conjugate Gradientith symmetric positive definite matrix (or, equivalently, to minimize in . iterations a quadratic strongly convex function on ℝ.), without storing an additional matrix, without even storing the matrix of the system. In fact, to solve . + . = 0 (. symmetric positive definite), the conjugate gradient
CUB
发表于 2025-3-31 14:14:30
Special Methodsmely important, and might supersede line-searches, sooner or later. The other methods deal with the direction; they are either classical (Gauss-Newton) or recent (limited-memory quasi-Newton, truncated Newton) and apply only in some well-defined subclasses of problems.
休息
发表于 2025-3-31 19:59:53
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黄油没有
发表于 2025-4-1 00:31:26
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