Results 21 to 30 of about 195,667 (268)
Robust solutions of inverse problems in eletromagnetic non-destructive evaluation
, 2022 S.1907-1921Non-destructive testing (NDT) is the application of physical measurement technology based on energy interaction with the material and its nonconformities.
Altpeter, I. +5 more
core +1 more source
Regularized fixed-point iterations for nonlinear inverse problems
, 2022 S.1-22In this paper, we introduce a derivative-free, iterative method for solving nonlinear ill-posed problems Fu = y, where instead of y, noisy data y(delta) with parallel to y - y(delta)parallel to Y is a nonlinear operator between Hilbert spaces X ...
Pereverzyev, S.S. +2 more
core +1 more source
Generalized modes in Bayesian inverse problems
, 2019 Uncertainty quantification requires efficient summarization of high- or even infinite-dimensional (i.e., non-parametric) distributions based on, e.g., suitable point estimates (modes) for posterior distributions arising from model-specific prior ...
Piiroinen, Petteri +3 more
core +1 more source
Inverse Problems Have Inverse Complexity [PDF]
, 2008 In this paper we show that inverting problems of higher complexity is easier than inverting problems of lower complexity. While inverting Σp i3CNFSAT is known to be coNP-complete sideri for i=1 we prove that it remains coNP-complete for i=2 and is in P for all i⩾ 3. Relatedly, we show that inverting Σp i3DNFSAT is in P for all i⩾ 1.
Tobias Berg, Harald Hempel
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The inverse Banzhaf problem [PDF]
Social Choice and Welfare, 2009 Let \({\mathcal{F}}\) be a family of subsets of the ground set [n] = {1, 2, . . . , n}. For each \({i \in [n]}\) we let \({p(\mathcal{F},i)}\) be the number of pairs of subsets that differ in the element i and exactly one of them is in \({\mathcal{F}}\). We interpret \({p(\mathcal{F},i)}\) as the influence of that element. The normalized Banzhaf vector
Alon, Noga, Edelman, Paul H.
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Inverse problems for elliptic equations with power type nonlinearities [PDF]
, 2021 We introduce a method for solving Calderón type inverse problems for semilinear equations with power type nonlinearities. The method is based on higher order linearizations, and it allows one to solve inverse problems for certain nonlinear equations in ...
Liimatainen, Tony +3 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub +24 more
wiley +1 more source
INVERSE PARTITION PROBLEMS [PDF]
Bulletin of informatics and cybernetics, 1999 Summary: We analyze a partition problem and its inverse problem both in discrete variables and in two continuous ones through dynamic programming. We show that an inverse relation and an enveloping relation hold in each case. It is shown that an optimal solution for the discrete partition can be expressed through either an upper-semi-inverse function ...
Iwamoto, Seiichi, Ueno, Takayuki
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou +16 more
wiley +1 more source
Associations of Sleep and Shift Work With Osteoarthritis Risk
Arthritis Care &Research, EarlyView.Objective Daily rhythms may be critical for maintaining homeostasis of joint tissues. We aimed to investigate the relationships among circadian clock disruption, sleep, and osteoarthritis (OA) risk in humans. Methods In the UK Biobank, a prospective 500,000–person cohort, we evaluated associations among sleep duration, sleeplessness/insomnia, and shift
Elizabeth L. Yanik +5 more
wiley +1 more source