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.
ENTSOG and ENTSO-E publish Artelys study on interlinkages between gas and electricity systems. In this study, Artelys presents recommendations related to the identification of infrastructure projects for which the interactions between gas and electricity may significantly impact their assessment.read more
H2020 project INSULAE: Artelys develops an energy planning tool for the decarbonisation of European islands
As one of the major participants in the H2020 project INSULAE, Artelys develops an advanced investment planning tool in order to establish the optimal set of investments in energy production technologies and flexibility solutions on European islands.read more
Artelys will participate in European Utility Week, from the 12th to 14th of November 2019, in Paris. This event is one of the biggest smart utility fairs in the world, with meetings, sessions and conferences dedicated to the energy business.read more
Artelys will participate in the INFORMS Annual Meeting in Seattle (USA) on October 20th – 23rd, 2019. Meet our optimization experts, discover our latest products and projects, and even challenge yourself with our nonlinear optimization quiz!read more
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