N. Andrei, Eigenvalues versus singular values study in conjugate gradient algorithms for large-scale unconstrained optimization. Optimization Methods and Software, 2016. DOI: 10.1080/10556788.2016.1225211.
[This paper is dedicated to Prof. Helmuth Schwarz, Duisburg-Essen University, Germany, on the occasion of his 85th birthday.]
N. Andrei, Another conjugate gradient algorithm with guaranteed descent and conjugacy conditions for large-scale unconstrained optimization. Journal of Optimization Theory and Applications. vol. 159 (2013), pp.159-182. DOI 10.1007/s10957-013-0285-9 (2013)
Journal of Computational and Applied Mathematics. vol. 241 (2013), pp. 19-29. [This paper is dedicated to the memory of Neculai Gheorghiu (1930–2009), my professor of Mathematical Analysis, Faculty of Mathematics, " Alexandru Ioan Cuza" University, Iasi, Romania.]
N. Andrei, An accelerated subspace minimization three-term conjugate gradient algorithm for unconstrained optimization. Numerical Algorithms. (Accepted) (2013)
N. Andrei, Another conjugate gradient algorithm with guaranteed descent and conjugacy conditions for large-scale unconstrained optimization. Journal of Optimization Theory and Applications. DOI 10.1007/s10957-013-0285-9 (2013)
Journal of Computational and Applied Mathematics. vol. 241 (2013), pp. 19-29. [This paper is dedicated to the memory of Neculai Gheorghiu (1930–2009), my professor of Mathematical Analysis, Faculty of Mathematics, " Alexandru Ioan Cuza" University, Iasi, Romania.
N. Andrei, New accelerated conjugate gradient algorithms as a modification of Dai-Yuan's computational scheme for unconstrained optimization.
Journal of Computational and Applied Mathematics,234 (2010), 3397-3410.
N. Andrei,Accelerated hybrid conjugate gradient algorithm with modified secant condition for unconstrained optimization.
Numerical Algorithms, 54 (2010), pp.23-46.
N. Andrei, Accelerated conjugate gradient algorithm with finite difference Hessian/vector product approximation for unconstrained optimization.
Journal of Computational and Applied Mathematics. 230 (2009) 570-582. (JCAM)
N. Andrei, Acceleration of conjugate gradient algorithms for unconstrained optimization.
Applied Mathematics and Computation. Volume 213, Issue 2, 15 July 2009, Pages 361-369. (AMC)
N. Andrei,Probleme deschise în algoritmii de gradient conjugat pentru optimizare fara restrictii. Centenar Eduard Stiefel (1909-1978). Revista Romana de Informatica si Automatica, vol. 19, no. 1, 2009, pp.5-14.
Journal of Optimization Theory and Applications (JOTA). vol. 141, No. 2, May 2009, pp. 249-264.
N. Andrei, New hybrid conjugate gradient algorithms for unconstrained optimization.
Encyclopedia of Optimization, Second Edition, 2009, C.A. Floudas and P. Pardalos (Eds.). Vol. N. pp.2560-2571.
N. Andrei, Performance profiles of conjugate gradient algorithms for unconstrained optimization.
Encyclopedia of Optimization, Second Edition, 2009, C.A. Floudas and P. Pardalos (Eds.). Vol. P. pp.2938-2953.
N. Andrei,Teorema Noether si fundamentele modelarii matematice. Revista Romana de Informatica si Automatica, vol. 18, nr. 4, 2008, pp.11-22.
N. Andrei,Another conjugate gradient algorithm for unconstrained optimization. Annals of Academy of Romanian Scientists, Series on Science and Technology of Information, vol. 1, nr. 1, 2008, pp.7-20.
N. Andrei, A hybrid conjugate gradient algorithm for unconstrained optimization as a convex combination of Hestenes-Stiefel and Dai-Yuan. Studies in Informatics and Control, vol.17, no.1, March 2008, pp. 55-70.
N. Andrei Profesorul Moisil - Creatorul Informaticii in Romania. Revista Romana de Informatica si Automatica, vol. 16, nr. 1, 2006, pp.5-8.
Also in "Grigore Moisil and his followers in the field of theoretical computer science",
A. Iogulescu, S. Marcus, S. Rudeanu and D.Vaida (Eds.), Editura Academiei Romane,
Bucuresti, 2007, pp.240-244.
N. Andrei, Ghe. Borcan ALLO - Limbaj algebric pentru optimizare liniara. Revista Romana de Informatica si Automatica, vol. 8, nr. 3, 1998, pp.55-67.
N. Andrei, Penalty-Barrier algorithms for nonlinear optimization. Preliminary computational results. Studies in Informatics and Control, vol 7, no.1, March 1998, pp.15-36.
N. Andrei, M. Barbulescu, Balance constrained reduction of large-scale linear programming problems. Annals of Operations Research, vol.43, 1993, pp.149-170.
N. Andrei, Application of sparse matrix techniques in GRG algorithm for very large-scale non-linear programming. Rev. Roum. Sci. Techn.-Electrotechn. et Energ., vol.32, no.4, 1987, pp.457-464.
N. Andrei, Application of sparse matrix techniques to the GRG algorithm for large-scale non-linear programming. Rev. Roum. Sci. Techn.-Electrotechn. et Energ., vol.30, no.2, 1985, pp.175-186.
N. Andrei, Dynamic modeling of job–shop production scheduling. Computer Models for Production and Inventory Control, Simulation Series, vol.12, no.2.
The Society for Computer Simulation, La Jolla, California, 1984, pp.23–44.
N. Andrei, Sparse systems. Digraph exact disturbance rejection. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.28, no.4, 1983, pp.405–413.
N. Andrei, Temporal decomposition algorithms for large–scale linear dynamic programming problems. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.28, no.1, 1983, pp.71–84.
N. Andrei, A new computational solution to hierarchical control of the large–scale linear quadratic tracking problem. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.27, no.1, 1982, pp.139–152.
N. Andrei, Nested decomposition of large-scale multi-stage linear programs. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.26, no.2, 1981, pp.291–303.
N. Andrei, Nested decomposition of large-scale linear dynamic programming problems. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.26, no.1, 1981, pp.99–113.
N. Andrei, A new computational solution to linear quadratic tracking problem. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.25, no.4, 1980, pp.579–589.
N. Andrei, On compensator selection strategies in decentralized systems. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.24, no.4, 1979, pp.677–688.
N. Andrei, Decentralization and hierarchy control of large-scale systems. Rev. Roum. Sci. Techn.–Electrotechn. et Energ., vol.23, no.4, 1978, pp.595–605.
N. Andrei, On decentralized systems. Rev. Roum. Sci. Techn.-Electrotechn. et Energ., vol.21, no.4, 1976, pp.553–566.