TANGO Trustable Algorithms for Nonlinear General Optimization
The University of Campinas and University of São Paulo joint project for optimization software development.

Conditions of use

All the TANGO Project components are free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. You can also find the GPL on the GNU web site.

Non-free versions of TANGO are available under terms different from those of the General Public License. Professors J. M. Martínez (martinez@ime.unicamp.br, martinezimecc@gmail.com ) or E. G. Birgin (egbirgin@ime.usp.br, egbirgin@gmail.com) should be contacted for more information related to such a license, future developments and/or technical support.

In addition, we kindly ask you to acknowledge the TANGO Project and its authors in any program or publication in which you use of the TANGO Project components. For published works that use ALGENCAN we suggest referencing:

R. Andreani, E. G. Birgin, J. M. Martínez and M. L. Schuverdt, "On Augmented Lagrangian methods with general lower-level constraints", SIAM Journal on Optimization 18, pp. 1286-1309, 2007.

R. Andreani, E. G. Birgin, J. M. Martínez and M. L. Schuverdt, "Augmented Lagrangian methods under the Constant Positive Linear Dependence constraint qualification", Mathematical Programming 111, pp. 5-32, 2008.

For published works that use GENCAN we suggest referencing:

E. G. Birgin and J. M. Martínez, "Large-scale active-set box-constrained optimization method with spectral projected gradients", Computational Optimization and Applications 23, pp. 101-125, 2002.

M. Andretta, E. G. Birgin and J. M. Martínez, "Practical active-set Euclidian trust-region method with spectral projected gradients for bound-constrained minimization", Optimization 54, pp. 305-325, 2005.

E. G. Birgin and J. M. Martínez, "A box-constrained optimization algorithm with negative curvature directions and spectral projected gradients", Computing [Suppl] 15, pp. 49-60, 2001.

For published works that use SPG we suggest referencing:

E. G. Birgin, J. M. Martínez and M. Raydan, "Nonmonotone spectral projected gradient methods on convex sets", SIAM Journal on Optimization 10, pp. 1196-1211, 2000.

E. G. Birgin, J. M. Martínez and M. Raydan, "Algorithm 813: SPG - software for convex-constrained optimization", ACM Transactions on Mathematical Software 27, pp. 340-349, 2001.

(See also other related works.)

UNICAMP
Page last modified: Nov 13, 2008.
Page URL: http://www.ime.usp.br/~egbirgin/tango/
Contact: egbirgin@ime.usp.br, egbirgin@gmail.com
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