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Updates December 04, 2023

Iago Almeida
Iago Almeida
JijZept Compiler Team

JijZept Updates​

We’re pleased to announce the release of JijZept with important updates and fixes that further refine your experience.

Updated SDKs​

New Features​

  • OBJSENSE support in jijmodeling: jijmodeling's MIPLIB/MPS file loader now supports IBM CPLEX's OBJSENSE headers for specifying whether the file refers to a maximization or minimization problem.

  • Improved API key-related error messages: The error messages returned when using JijZept and JijZeptLabClient with an expired subscription or insufficient permissions are now clearer:

    { 'detail': 'failed to authorize subscription: The expiration date has already passed.'}
    { 'detail': 'failed to authorize subscription: No permission to use the specified solver.'}

  • New JijZept tutorials: Added a new tutorial on how to solve MIP (mixed integer programming) and NLP (non-linear programming) problems with JijZept.

Bug Fixes​

  • Non-matching placeholder names when reading MIPLIB/MPS files: Fixed an issue when reading MIPLIB instances where sometimes the Placeholders present in the Problem object would not match the entries in the instance_data dictionary.

  • JijModeling API Reference auto-updating: Fixed an issue where the main API reference page for the jijmodeling package would disappear after a new release.

Thank you for your continued support. Please do not hesitate to contact us for additional inquiries or assistance.