Results 41 to 50 of about 401,900 (340)
Advances in Multimedia, 2015 To improve the spatial resolution of reconstructed images/videos, this paper proposes a Superresolution (SR) reconstruction algorithm based on iterative back projection.
Yixiong Zhang +3 more
doaj +1 more source
Journal of Inequalities and Applications, 2017 In this paper, we suggest and analyze a new system of extended regularized nonconvex variational inequalities and prove the equivalence between the aforesaid system and a fixed point problem.
Ying Zhao, Luoyi Shi, Rudong Chen
doaj +1 more source
Frontiers in Oncology, 2020 Purpose: Conventional iterative low-dose CBCT reconstruction techniques are slow and tend to over-smooth edges through uniform weighting of the image penalty gradient.
James J. Sohn +6 more
doaj +1 more source
Existence of Solutions and Algorithm for a System of Variational Inequalities
Fixed Point Theory and Applications, 2010 We obtain some existence results for a system of variational inequalities (for short, denoted by SVI) by Brouwer fixed point theorem. We also establish the existence and uniqueness theorem using the projection technique for the SVI and suggest an ...
Yali Zhao +3 more
doaj +2 more sources
Journal of Inequalities and Applications, 2021 The objective of this article is to solve pseudomonotone variational inequality problems in a real Hilbert space. We introduce an inertial algorithm with a new self-adaptive step size rule, which is based on the projection and contraction method.
Ming Tian, Gang Xu
doaj +1 more source
An iterative projections algorithm for ML factor analysis [PDF]
2008 IEEE Workshop on Machine Learning for Signal Processing, 2008 Alternating minimization of the information divergence is used to derive an effective algorithm for maximum likelihood (ML) factor analysis. The proposed algorithm is derived as an iterative alternating projections procedure on a model family of probability distributions defined on the factor analysis model and a desired family of probability ...
openaire +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Non-iterative phase hologram computation for low speckle holographic image projection.
Optics Express, 2016 Phase-only spatial light modulators (SLMs) are widely used in holographic display applications, including holographic image projection (HIP). Most phase computer generated hologram (CGH) calculation algorithms have an iterative structure with a high ...
Deniz Mengu, Erdem Ulusoy, H. Urey
semanticscholar +1 more source
Sketching Meets Random Projection in the Dual: A Provable Recovery Algorithm for Big and High-dimensional Data [PDF]
International Conference on Artificial Intelligence and Statistics, 2016 Sketching techniques have become popular for scaling up machine learning algorithms by reducing the sample size or dimensionality of massive data sets, while still maintaining the statistical power of big data.
Jialei Wang +4 more
semanticscholar +1 more source
Tumor mutational burden as a determinant of metastatic dissemination patterns
Molecular Oncology, EarlyView.This study performed a comprehensive analysis of genomic data to elucidate whether metastasis in certain organs share genetic characteristics regardless of cancer type. No robust mutational patterns were identified across different metastatic locations and cancer types.
Eduardo Candeal +4 more
wiley +1 more source