Massimo Roma

Associate Professor

Dipartimento di Informatica e Sistemistica "A. Ruberti"
SAPIENZA - Università di Roma
Via Ariosto 25, 00185
Roma, Italia

Phone: +39 06 77274090
Email: roma@dis.uniroma1.it

Interests: Unconstrained and Constrained Optimization. Global optimization.

Recent Publications

• Iterative computation of negative curvature directions in large scale optimization: theory and preliminary numerical results. Technical Report 12-05, Dipartimento di Informatica e Sistemistica "A. Ruberti', 2005. file pdf 
 

• Dynamic scaling based preconditioning for truncated Newton methods in large scale unconstrained  optimization: the complete results. Technical Report  IASI R.579 (revised 2003). file pdf  file  ps

• Large scale unconstrained optimization.
  Invited contribution in C. Floudas and P. Pardalos eds., Encyclopedia of Optimization , vol. III,  pp. 143-150. Kluwer Academic Publishers., 2001.  Available as Technical Report 10.99, Dipartimento di Informatica e Sistemistica, 1999. file.ps

• Exploiting negative curvature directions in linesearch methods for unconstrained optimization.
   Optimization Methods and Software, 14 pp. 75-98, 2000.

• Solving the trust-region subproblem using the Lanczos method.
  SIAM Journal on Optimization, 9 pp. 504-525, 1999.

• Curvilinear stabilization techniques for truncated Newton methods in large scale unconstrained optimization.
  SIAM Journal on Optimization, 8 pp. 916-939, 1998.

• On some properties of quadratic programs with a convex quadratic constraint
  SIAM Journal on Optimization, 8 pp. 105-122, 1998.

• A linesearch algorithm with memory for unconstrained optimization.
  In R. De Leone, A. Murli, P. Pardalos and G. Toraldo eds  High Performance Algorithms and Software in Nonlinear Optimization, pp. 207-223. Kluwer Academic Publishers, 1998.

• A controlled random search algorithm with local Newton-type search for global optimization.
  In R. De Leone, A. Murli, P. Pardalos and G. Toraldo eds.  High Performance Algorithms and Software in Nonlinear Optimization, pp. 143-159. Kluwer Academic Publishers, 1998.

• Numerical experiences with new truncated Newton methods in large scale unconstrained optimization.
  Computational Optimization and Applications, 7 pp. 71-87, 1997.

• Nonmonotone Curvilinear Line Search Methods for Unconstrained Optimization.
  Computational Optimization and Applications, 6 pp. 117-136, 1996.

• A modified truncated Newton method which uses negative curvature directions for large scale unconstrained problems.
  In A. Bachem and A. Drexl eds. Operations Research Proceedings 1994, pp. 54-59, Berlin, Springer-Verlag, 1995.

• Curvilinear stabilization techniques for truncated Newton methods in large scale unconstrained optimization: the complete results.
Technical Report 02.95, Dipartimento di Informatica e Sistemistica, 1995. file.ps.Z

• Nonmonotone conjugate gradient methods for optimization.
  In J. Henry and J.P. Yvon eds. System Modelling and Optimization, pp. 206-214, Lecture Notes in Control and Inform. Sci. 197, Springer-Verlag, London, 1994.

• Quadratic programs with quadratic Constraints: characterization of KKT points and equivalence with an unconstrained problem.
Technical Report 24.94, Dipartimento di Informatica e Sistemistica, 1994. file.ps.Z

Books

• Complementi ed Esercizi di Ricerca Operativa .
• Errata Corrige del libro: Complementi ed Esercizi di Ricerca Operativa .

Teaching  (in Italian) / Didattica

• Department of Information and System Science .
• University of Rome "La Sapienza".