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ORCIDVasilios N. Katsikis
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2020 – today
- 2024
[j61]Predrag S. Stanimirovic
, Spyridon D. Mourtas, Dijana Mosic, Vasilios N. Katsikis, Xinwei Cao, Shuai Li:
Zeroing neural network approaches for computing time-varying minimal rank outer inverse. Appl. Math. Comput. 465: 128412 (2024)- [j60]Dimitrios Gerontitis, Changxin Mo, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Improved zeroing neural models based on two novel activation functions with exponential behavior. Theor. Comput. Sci. 986: 114328 (2024) - [j59]Xinwei Cao, Chen Peng, Yuhua Zheng, Shuai Li, Tran Thu Ha, Victor P. Shutyaev, Vasilios N. Katsikis, Predrag S. Stanimirovic:
Neural Networks for Portfolio Analysis in High-Frequency Trading. IEEE Trans. Neural Networks Learn. Syst. 35(12): 18052-18061 (2024) - 2023
- [j58]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Shuai Li, Xinwei Cao:
Time-varying minimum-cost portfolio insurance problem via an adaptive fuzzy-power LVI-PDNN. Appl. Math. Comput. 441: 127700 (2023) - [j57]Xinwei Cao, Adam Francis, Xujin Pu, Zenan Zhang, Vasilios N. Katsikis, Predrag S. Stanimirovic, Ivona Brajevic, Shuai Li:
A novel recurrent neural network based online portfolio analysis for high frequency trading. Expert Syst. Appl. 233: 120934 (2023) - [j56]Spyridon D. Mourtas, Vasilios N. Katsikis, Emmanouil Drakonakis, Stelios Kotsios:
Stabilization of Stochastic Exchange Rate Dynamics Under Central Bank Intervention Using Neuronets. Int. J. Inf. Technol. Decis. Mak. 22(2): 855-883 (2023) - [j55]Daochang Zhang, Yue Zhao, Dijana Mosic, Vasilios N. Katsikis:
Exact expressions for the Drazin inverse of anti-triangular matrices. J. Comput. Appl. Math. 428: 115187 (2023) - [j54]Dimitrios Gerontitis, Changxin Mo, Predrag S. Stanimirovic, Panagiotis Tzekis, Vasilios N. Katsikis:
A novel extended Li zeroing neural network for matrix inversion. Neural Comput. Appl. 35(19): 14129-14152 (2023) - [j53]Ratikanta Behera, Dimitrios Gerontitis, Predrag S. Stanimirovic, Vasilios N. Katsikis, Yang Shi, Xinwei Cao:
An efficient zeroing neural network for solving time-varying nonlinear equations. Neural Comput. Appl. 35(24): 17537-17554 (2023) - [j52]Vasilios N. Katsikis, Predrag S. Stanimirovic, Spyridon D. Mourtas, Lin Xiao, Dragisa Stanujkic, Darjan Karabasevic:
Zeroing Neural Network Based on Neutrosophic Logic for Calculating Minimal-Norm Least-Squares Solutions to Time-Varying Linear Systems. Neural Process. Lett. 55(7): 8731-8753 (2023) - [j51]Predrag S. Stanimirovic, Branislav Ivanov, Dragisa Stanujkic, Vasilios N. Katsikis, Spyridon D. Mourtas, Lev A. Kazakovtsev, Seyyed Ahmad Edalatpanah:
Improvement of Unconstrained Optimization Methods Based on Symmetry Involved in Neutrosophy. Symmetry 15(1): 250 (2023) - [j50]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic:
Solving Time-Varying Nonsymmetric Algebraic Riccati Equations With Zeroing Neural Dynamics. IEEE Trans. Syst. Man Cybern. Syst. 53(10): 6575-6587 (2023) - 2022
- [j49]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas:
A multi-input with multi-function activated weights and structure determination neuronet for classification problems and applications in firm fraud and loan approval. Appl. Soft Comput. 127: 109351 (2022) - [j48]Dijana Mosic, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Properties of the CMP inverse and its computation. Comput. Appl. Math. 41(4) (2022) - [j47]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Shuai Li, Xinwei Cao:
Time-varying mean-variance portfolio selection problem solving via LVI-PDNN. Comput. Oper. Res. 138: 105582 (2022) - [j46]Ameer Tamoor Khan, Xinwei Cao, Shuai Li, Vasilios N. Katsikis, Ivona Brajevic, Predrag S. Stanimirovic:
Fraud detection in publicly traded U.S firms using Beetle Antennae Search: A machine learning approach. Expert Syst. Appl. 191: 116148 (2022) - [j45]Ameer Tamoor Khan, Xinwei Cao, Ivona Brajevic, Predrag S. Stanimirovic, Vasilios N. Katsikis, Shuai Li:
Non-linear Activated Beetle Antennae Search: A novel technique for non-convex tax-aware portfolio optimization problem. Expert Syst. Appl. 197: 116631 (2022) - [j44]Spyridon D. Mourtas, Vasilios N. Katsikis:
Exploiting the Black-Litterman framework through error-correction neural networks. Neurocomputing 498: 43-58 (2022) - [j43]Dragisa Stanujkic, Darjan Karabasevic, Gabrijela Popovic, Florentin Smarandache, Predrag S. Stanimirovic, Muzafer Saracevic, Vasilios N. Katsikis:
A Single Valued Neutrosophic Extension of the Simple WISP Method. Informatica 33(3): 635-651 (2022) - [j42]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Dimitrios Gerontitis:
A higher-order zeroing neural network for pseudoinversion of an arbitrary time-varying matrix with applications to mobile object localization. Inf. Sci. 600: 226-238 (2022) - [j41]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic:
Finite-time convergent zeroing neural network for solving time-varying algebraic Riccati equations. J. Frankl. Inst. 359(18): 10867-10883 (2022) - [j40]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas:
Multi-input bio-inspired weights and structure determination neuronet with applications in European Central Bank publications. Math. Comput. Simul. 193: 451-465 (2022) - [j39]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic:
Unique non-negative definite solution of the time-varying algebraic Riccati equations with applications to stabilization of LTV systems. Math. Comput. Simul. 202: 164-180 (2022) - [j38]Theodore E. Simos, Vasilios N. Katsikis, Spyridon D. Mourtas:
A fuzzy WASD neuronet with application in breast cancer prediction. Neural Comput. Appl. 34(4): 3019-3031 (2022) - [j37]Vasilios N. Katsikis, Predrag S. Stanimirovic, Spyridon D. Mourtas, Lin Xiao, Darjan Karabasevic, Dragisa Stanujkic:
Zeroing Neural Network With Fuzzy Parameter for Computing Pseudoinverse of Arbitrary Matrix. IEEE Trans. Fuzzy Syst. 30(9): 3426-3435 (2022) - [j36]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Yunong Zhang:
Solving Complex-Valued Time-Varying Linear Matrix Equations via QR Decomposition With Applications to Robotic Motion Tracking and on Angle-of-Arrival Localization. IEEE Trans. Neural Networks Learn. Syst. 33(8): 3415-3424 (2022) - 2021
- [j35]Predrag S. Stanimirovic, Vasilios N. Katsikis, Long Jin, Dijana Mosic:
Properties and computation of continuous-time solutions to linear systems. Appl. Math. Comput. 405: 126242 (2021) - [j34]Dijana Mosic, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Weighted composite outer inverses. Appl. Math. Comput. 411: 126493 (2021) - [j33]Theodore E. Simos, Spyridon D. Mourtas, Vasilios N. Katsikis:
Time-varying Black-Litterman portfolio optimization using a bio-inspired approach and neuronets. Appl. Soft Comput. 112: 107767 (2021) - [j32]Dragisa Stanujkic, Darjan Karabasevic, Gabrijela Popovic, Predrag S. Stanimirovic, Florentin Smarandache, Muzafer Saracevic, Alptekin Ulutas, Vasilios N. Katsikis:
An Innovative Grey Approach for Group Multi-Criteria Decision Analysis Based on the Median of Ratings by Using Python. Axioms 10(2): 124 (2021) - [j31]Dragisa Stanujkic, Darjan Karabasevic, Gabrijela Popovic, Edmundas Kazimieras Zavadskas, Muzafer Saracevic, Predrag S. Stanimirovic, Alptekin Ulutas, Vasilios N. Katsikis, Ieva Meidute-Kavaliauskiene:
Comparative Analysis of the Simple WISP and Some Prominent MCDM Methods: A Python Approach. Axioms 10(4): 347 (2021) - [j30]Ameer Tamoor Khan, Xinwei Cao, Shuai Li, Bin Hu, Vasilios N. Katsikis:
Quantum beetle antennae search: a novel technique for the constrained portfolio optimization problem. Sci. China Inf. Sci. 64(5) (2021) - [j29]Zhenyu Li, Yunong Zhang, Liangjie Ming, Jinjin Guo, Vasilios N. Katsikis:
Real-domain QR decomposition models employing zeroing neural network and time-discretization formulas for time-varying matrices. Neurocomputing 448: 217-227 (2021) - [j28]Dijana Mosic, Predrag S. Stanimirovic, Jajati Keshari Sahoo, Ratikanta Behera, Vasilios N. Katsikis:
One-sided weighted outer inverses of tensors. J. Comput. Appl. Math. 388: 113293 (2021) - [j27]Predrag S. Stanimirovic, Vasilios N. Katsikis, Dimitrios Gerontitis:
A New Varying-Parameter Design Formula for Solving Time-Varying Problems. Neural Process. Lett. 53(1): 107-129 (2021) - [j26]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Yunong Zhang:
Continuous-Time Varying Complex QR Decomposition via Zeroing Neural Dynamics. Neural Process. Lett. 53(5): 3573-3590 (2021) - [j25]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Shuai Li, Xinwei Cao:
Time-Varying Mean-Variance Portfolio Selection under Transaction Costs and Cardinality Constraint Problem via Beetle Antennae Search Algorithm (BAS). Oper. Res. Forum 2(2) (2021) - 2020
- [j24]Ameer Hamza Khan, Xinwei Cao, Vasilios N. Katsikis, Predrag S. Stanimirovic, Ivona Brajevic, Shuai Li, Seifedine Nimer Kadry, Yunyoung Nam:
Optimal Portfolio Management for Engineering Problems Using Nonconvex Cardinality Constraint: A Computing Perspective. IEEE Access 8: 57437-57450 (2020) - [j23]Vasilios N. Katsikis, Spyridon D. Mourtas, Predrag S. Stanimirovic, Shuai Li, Xinwei Cao:
Time-varying minimum-cost portfolio insurance under transaction costs problem via Beetle Antennae Search Algorithm (BAS). Appl. Math. Comput. 385: 125453 (2020) - [j22]Jajati Keshari Sahoo, Ratikanta Behera, Predrag S. Stanimirovic, Vasilios N. Katsikis, Haifeng Ma:
Core and core-EP inverses of tensors. Comput. Appl. Math. 39(1) (2020) - [j21]Jajati Keshari Sahoo, Ratikanta Behera, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Computation of outer inverses of tensors using the QR decomposition. Comput. Appl. Math. 39(3) (2020) - [j20]Dijana Mosic, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Solvability of some constrained matrix approximation problems using core-EP inverses. Comput. Appl. Math. 39(4) (2020) - [j19]Ameer Hamza Khan, Xinwei Cao, Shuai Li, Vasilios N. Katsikis, Liefa Liao:
BAS-ADAM: an ADAM based approach to improve the performance of beetle antennae search optimizer. IEEE CAA J. Autom. Sinica 7(2): 461-471 (2020) - [j18]Predrag S. Stanimirovic, Vasilios N. Katsikis, Shuai Li:
Higher-Order ZNN Dynamics. Neural Process. Lett. 51(1): 697-721 (2020) - [j17]Mengmeng Zhou, Jianlong Chen, Predrag S. Stanimirovic, Vasilios N. Katsikis, Haifeng Ma:
Complex Varying-Parameter Zhang Neural Networks for Computing Core and Core-EP Inverse. Neural Process. Lett. 51(2): 1299-1329 (2020) - [j16]Predrag S. Stanimirovic, Vasilios N. Katsikis, Zhijun Zhang, Shuai Li, Jianlong Chen, Mengmeng Zhou:
Varying-parameter Zhang neural network for approximating some expressions involving outer inverses. Optim. Methods Softw. 35(6): 1304-1330 (2020)
2010 – 2019
- 2019
- [j15]Predrag S. Stanimirovic, Vasilios N. Katsikis, Dejan Kolundzija:
Inversion and pseudoinversion of block arrowhead matrices. Appl. Math. Comput. 341: 379-401 (2019) - [j14]Vasilios N. Katsikis, Spyridon D. Mourtas:
A heuristic process on the existence of positive bases with applications to minimum-cost portfolio insurance in C[a, b]. Appl. Math. Comput. 349: 221-244 (2019) - [j13]Haifeng Ma, Na Li, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Perturbation theory for Moore-Penrose inverse of tensor via Einstein product. Comput. Appl. Math. 38(3) (2019) - [j12]Predrag S. Stanimirovic, Vasilios N. Katsikis, Shuai Li:
Integration enhanced and noise tolerant ZNN for computing various expressions involving outer inverses. Neurocomputing 329: 129-143 (2019) - 2018
- [j11]Marko D. Petkovic, Predrag S. Stanimirovic, Vasilios N. Katsikis:
Modified discrete iterations for computing the inverse and pseudoinverse of the time-varying matrix. Neurocomputing 289: 155-165 (2018) - [j10]Predrag S. Stanimirovic, Vasilios N. Katsikis, Shuai Li:
Hybrid GNN-ZNN models for solving linear matrix equations. Neurocomputing 316: 124-134 (2018) - 2016
- [j9]Predrag S. Stanimirovic, Vasilios N. Katsikis, Dimitrios Pappas:
Computing {2, 4} and {2, 3}-inverses by using the Sherman-Morrison formula. Appl. Math. Comput. 273: 584-603 (2016) - 2014
- [j8]Charalampos Tsitouras, Vasilios N. Katsikis:
Bounds for variable degree rational L∞ approximations to the matrix cosine. Comput. Phys. Commun. 185(11): 2834-2840 (2014) - 2012
- [j7]Vasilios N. Katsikis, Ioannis A. Polyrakis:
Computation of vector sublattices and minimal lattice-subspaces of Rk: Applications in finance. Appl. Math. Comput. 218(12): 6860-6873 (2012) - [j6]Predrag S. Stanimirovic, Dimitrios Pappas, Vasilios N. Katsikis, Ivan P. Stanimirovic:
Full-rank representations of outer inverses based on the QR decomposition. Appl. Math. Comput. 218(20): 10321-10333 (2012) - 2011
- [j5]Vasilios N. Katsikis, Dimitrios Pappas, Athanassios Petralias:
An improved method for the computation of the Moore-Penrose inverse matrix. Appl. Math. Comput. 217(23): 9828-9834 (2011) - [j4]Vasilios N. Katsikis:
Computational methods for option replication. Int. J. Comput. Math. 88(13): 2752-2769 (2011)
2000 – 2009
- 2009
- [j3]Vasilios N. Katsikis:
A Matlab-based rapid method for computing lattice-subspaces and vector sublattices of Rn: Applications in portfolio insurance. Appl. Math. Comput. 215(3): 961-972 (2009) - 2008
- [j2]Vasilios N. Katsikis:
Computational methods in lattice-subspaces of C[a, b] with applications in portfolio insurance. Appl. Math. Comput. 200(1): 204-219 (2008) - 2007
- [j1]Vasilios N. Katsikis:
Computational methods in portfolio insurance. Appl. Math. Comput. 189(1): 9-22 (2007)
Coauthor Index
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