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.
— As part of Le Havre Seine Métropole’s energy master plan, Artelys has worked with metropolitan services to set up a web platform for monitoring territorial energy data.
— CasADi is an open-source tool for general numerical optimization with a strong focus on optimal control and its versions 3.6.2 and higher are now compatible with Artelys Knitro 13.2.
Artelys participation to studies assessing potential contribution of African H2 to EU decarbonization objectives
— As part of the Clean Hydrogen Partnership funding programme, Artelys will participate in the JUST-GREEN AFRH2ICA project along with ten other African and European partners ready to share their know-how on hydrogen economics and technologies.
Artelys demonstrated how to perform cost-benefit analysis of new transmission assets in a smart grid during a webinar hosted by the Linux Foundation Energy and the Global Power System Transformation Consortium showing the strength of the prominent open-source grid computation tool PowSyBl-Metrix.
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