Notes for SCIP Release 1.2 Features ======== - Preliminary support of non-convex MIQCPs: Constraint handler for quadratic constraints, NLP heuristic, and Ipopt interface - Improved support of branch-and-price: SCIP now supports lazy bounds, early branching/incomplete pricing, and primal heuristics during pricing loop - Constraint handler for indicator constraints and parsing them from *.lp and *.zpl files - Heuristics which are applied before root LP - Black-box lexicographic dual simplex algorithm - Copy constructors and i/o functionality for constraints Interfaces ========== - First version of LP interfaces to Gurobi and QSopt - Major performance improvements in LP interfaces to Clp, Mosek, and SoPlex - Reader for Flatzinc and GAMS models - Adjusted interface to Zimpl version 3.0.0 - On http://code.google.com/p/python-zibopt/source/checkout you find a beta version of a python interface to SCIP implemented by Ryan J. O'Neil. Performance Improvements and Bug Fixes ====================================== - Enhanced MCF cuts: stable version, used by default - Improved hybrid branching - Increased numerical stability for Big M formulations - Several improvements in presolving - Many bug fixes For details see the CHANGELOG file. Some of the interface functions were changed. See "Changes between version 1.1 and 1.2" in the doxygen documentation for additional information.