• SYMPHONY now has a preprocessor.
• The feasibility pump primal heuristic is implemented and activated by default.
• Reliability branching is now the default branching strategy.
• New statistics are now part of the default output.
• The granularity of the objective function value is set by calculating the GCD of the objective coefficients.
• Several changes in the management of valid inequalities, including quality checks and detection of duplicity.
• Minor changes in the management of the LP solver interface.
• Small bug-fixes and improvements.

The purpose of BranchAndCut.org is to provide a community resource for researchers and those who want to learn more about branch, cut, and price algorithms, as well as to provide a distribution point for open-source software implementing branch, cut, and price algorithms. Please have a look around and feel free to contact us if you have comments or questions.

Contributions are welcome!

This site is affiliated with the COIN-OR Foundation and CORAL

This site is maintained by

Ted Ralphs
Department of Industrial and Systems Engineering
Lehigh University
Bethlehem, PA
(610)758-4784

ted@branchandcut.org
tkralphs@lehigh.edu