New presolve operations for integer variables and additional Mixed integer Rounding cuts are now available. These new cuts are automatically derived from nonlinear constraints. This feature significantly increases the number of problem classes for which cuts can be generated.
Those new cuts have been tested on a subset of instances derived from CMU-IBM library. As illustrated above, the additional cuts derived from nonlinear constraints (only these cuts are presented in the chart) significantly reduce the root node integrality gap.
This version also includes a completely updated MATLAB interface integrating dedicated solve functions for many optimization problems. These dedicated functions exploit as much as possible the problem structure, leading to significant performance improvements, especially for LP/QP/QCQP problems.
Additional features of Artelys Knitro 12.1:
- The Python interface now supports the SciPy format to solve NLP instances.
- Improved performance on MPEC problems thanks to new presolve operations.
- Exporting of linear and quadratic instances in MPS file format is now available.
- General performance on large-scale NLP and SOCP instances.
— Artelys will present the solution Artelys Crystal Energy Planner adopted by Brookfield Renewable during the 11th Hydropower Conference of the Centre for Energy Advancement through Technological Innovation (CEATI) on March 3-4 2020, in Palm Springs, California.read more
Artelys would like to congratulate the teams that ranked in the top ten of Challenge 1 of the ARPA-E Grid Optimization competition. We would especially like to applaud the NU_Columbia_Artelys team composed of Richard Waltz, Daniel Bienstock and Jorge Nocedal for placing seventh overall and qualifying for the maximum prize money of $400,000.read more
Artelys will be present at the Roadshow, on February 14th at Orléans, Loiret, France. We will present our platform prototype of smart road safety data management, developed in the collaboration of the Loiret department and several actors of the mobility sector.read more
Artelys is taking part in the open forum Dataquitaine 2020 on 13 February in Bordeaux, France. This event promotes skills related to Data Science, Artificial Intelligence and Operational Research and will gather actors with both business and academic backgrounds.read more
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