On quadratic approximation for hyperquadratic continued fractions
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Number Theory"
DOI: 10.1016/j.jnt.2020.02.008
Abstract: Abstract We study quadratic approximations for two families of hyperquadratic continued fractions in the field of Laurent series over a finite field. As the first application, we give the answer to a question of the… read more here.
Keywords: quadratic approximation; continued fractions; approximation hyperquadratic; hyperquadratic continued ... See more keywords
Sparse Quadratic Approximation for Graph Learning.
Sign Up to like & getrecommendations! Published in 2023 at "IEEE transactions on pattern analysis and machine intelligence"
DOI: 10.1109/tpami.2023.3263969
Abstract: Learning graphs represented by M-matrices via an l1-regularized Gaussian maximum-likelihood method is a popular approach, but also one that poses computational challenges for large scale datasets. Recently proposed methods cast this problem as a constrained… read more here.
Keywords: sparse quadratic; graph; approximation graph; method ... See more keywords
Nonlinear AVA Inversion Based on a Novel Quadratic Approximation for Fluid Discrimination
Sign Up to like & getrecommendations! Published in 2020 at "Geofluids"
DOI: 10.1155/2020/8860119
Abstract: Fluid discrimination plays an important role in reservoir exploration and development. At present, the fluid factors used for fluid discrimination are estimated by linear AVA inversion methods based on the linear approximations of the Zoeppritz… read more here.
Keywords: quadratic approximation; inversion; fluid; fluid discrimination ... See more keywords
Modeling of pure qP- and qSV-waves in tilted transversely isotropic media with the optimal quadratic approximation
Sign Up to like & getrecommendations! Published in 2020 at "Geophysics"
DOI: 10.1190/geo2018-0460.1
Abstract: Seismic forward modeling in tilted transverse isotropic (TTI) media is crucial for the application of reverse time migration and full-waveform inversion. Modeling based on conventional coupled pseudoacoustic wave equations not only generates SV-wave artifacts, but… read more here.
Keywords: quadratic approximation; pure; optimal quadratic; transversely isotropic ... See more keywords