Haifeng Ma

ORCID: 0000-0003-4920-3370
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Research Areas
  • Matrix Theory and Algorithms
  • Advanced Optimization Algorithms Research
  • Tensor decomposition and applications
  • Electromagnetic Scattering and Analysis
  • Neural Networks and Applications
  • Iterative Methods for Nonlinear Equations
  • Optimization and Variational Analysis
  • Sparse and Compressive Sensing Techniques
  • Numerical methods in inverse problems
  • Privacy-Preserving Technologies in Data
  • Advanced Banach Space Theory
  • Cryptography and Data Security
  • Digital Filter Design and Implementation
  • Model Reduction and Neural Networks
  • Control Systems and Identification
  • Algebraic and Geometric Analysis
  • Blockchain Technology Applications and Security
  • Robotic Mechanisms and Dynamics
  • Spectral Theory in Mathematical Physics
  • Web Data Mining and Analysis
  • Advanced Decision-Making Techniques
  • Network Packet Processing and Optimization
  • Differential Equations and Boundary Problems
  • Higher Education and Teaching Methods
  • Human Pose and Action Recognition

Harbin Normal University
2015-2024

Shanghai Institute of Technology
2021-2023

University of Chinese Academy of Sciences
2021-2022

University of Jinan
2017

Changzhou Institute of Mechatronic Technology
2009-2012

Wenzhou University
2010-2011

Jiangsu Ocean University
2009-2011

Harbin Engineering University
2009-2010

Heilongjiang University of Science and Technology
2010

Heilongjiang Institute of Technology
2009

Predrag S. Stanimirovića* , Miroslav Ćirića, Vasilios N. Katsikisb, Chaoqian Lic & Haifeng Mada Faculty of Science and Mathematics, Department Computer Science, University Niš, Serbiab Economics, Division Mathematics Informatics, National Kapodistrian Athens, Greecec School Statistics, Yunnan University, Kunming, People's Republic Chinad Mathematical Harbin Normal Harbin, China

10.1080/03081087.2018.1521783 article EN Linear and Multilinear Algebra 2018-09-20

In this paper, we present the characterizations of core inverse by matrix equations. We give several representations for computing inverse. explore relationship between and nonsingularity a bordered Cramer rule. also an iterative formula sufficient condition convergence process.

10.1080/03081087.2019.1588847 article EN Linear and Multilinear Algebra 2019-03-11

We define and investigate the e-core inverse f-dual core in a ring with involution as extensions of dual inverse, respectively. Using these definitions, we present characterize partial order order. describe sets all elements Rickart ∗-ring which are below given element under New characterizations weighted-EP too.

10.1080/00927872.2017.1378895 article EN Communications in Algebra 2017-09-19

10.1016/j.amc.2018.04.059 article EN Applied Mathematics and Computation 2018-05-26

Several new representations of the W-weighted Drazin inverse are introduced. These expressed in terms various matrix powers as well products involving Moore–Penrose and usual inverse. Also, properties generalized inverses which arise from derived investigated. The computational complexity efficiency proposed considered. Representations tested compared among themselves a substantial number randomly generated test examples.

10.1080/03081087.2016.1228810 article EN Linear and Multilinear Algebra 2016-09-06

<p style='text-indent:20px;'>The paper surveys, classifies and investigates theoretically numerically main classes of line search methods for unconstrained optimization. Quasi-Newton (QN) conjugate gradient (CG) are considered as representative effective numerical solving large-scale optimization problems. In this paper, we investigate, classify compare QN CG to present a global overview scientific advances in field. Some the most recent trends field presented. A number experiments is...

10.3934/era.2020115 article EN Electronic Research Archive 2020-01-01

Abstract In this paper, we present a new characterization of the weighted core-EP inverse rectangular matrix. We also investigate perturbation bounds and approximations for inverse.

10.2989/16073606.2019.1584773 article EN Quaestiones Mathematicae 2019-03-25

10.1016/j.jmaa.2021.125101 article EN Journal of Mathematical Analysis and Applications 2021-02-24

10.1007/s40314-022-02114-8 article EN Computational and Applied Mathematics 2022-11-13

Abstract Recently, Bai and Wang [On parameterized inexact Uzawa methods for generalized saddle point problems, Linear Algebra Appl. 428 (2008), pp. 2900–2932] Gao Kong [Block diagonally preconditioned PIU of Math. Comput. 216 (2010), 1880–1887] discussed the (PIU) method (PPIU) method. In this paper, we further study block-diagonally solving singular give corresponding convergence analysis. Keywords: linear systemssaddle problemsPPIU methodconvergence 2000 AMS Subject Classifications :...

10.1080/00207160.2011.594506 article EN International Journal of Computer Mathematics 2011-08-09

We present characterizations and representations for the CMP inverse. Also, we explore inverse of a block triangular matrix its sign pattern, propose successive squaring algorithm computing inverse, derive perturbation bounds continuity

10.1080/03081087.2021.1907275 article EN Linear and Multilinear Algebra 2021-03-28

According to known definition in the literature, W-weighted outer inverses of A is defined as WAW. We introduce and study more general weighted rectangular complex matrices. Introduced families include previous research two aspects from approaches. In first approach, for given matrices A, M, N, B, C, we define (M,N)-weighted (B,C)-inverse prove that it just inverse MAN with range R(B) null space N(C). Thus, generalizes notion and, finally, image kernel. give equivalent conditions existence...

10.1080/03081087.2020.1713712 article EN Linear and Multilinear Algebra 2020-01-16

In this paper, we investigate the theory of core-EP inverse third-order tensors via T-product (called T-core-EP inverse). A new decomposition called is given by T-Schur decomposition. canonical form and some characterizations are presented. Finally, establish perturbation bounds for inverse.

10.1080/01630563.2022.2087676 article EN Numerical Functional Analysis and Optimization 2022-06-22

In this paper, for given tensors A,? and B = A+E, we investigate the perturbation bounds core inverse A# core-EP A+ under some conditions via Einstein product.

10.2298/fil1916207d article EN Filomat 2019-01-01

10.1007/s12190-021-01687-7 article EN Journal of Applied Mathematics and Computing 2022-01-04

This study focuses on the faster exact single pattern string matching algorithms. In all solutions, two variants of BOM, EBOM and FBOM are very efficient. We improved them presented algorithms named Simplified-EBOM Simplified-FBOM through removing unnecessary branches accomplishing core calculation algorithm in a 1-dimensional array. The experimental results indicated that is fast for short patterns it 12% than its basis average.

10.1109/icicse.2009.53 article EN 2009-12-01
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