Table of contents

What's new and changed in Decision Optimization

The Decision Optimization release and subsequent refreshes can include new features, bug fixes, and security updates. Refreshes appear in reverse chronological order, and only the refreshes that contain updates for Decision Optimization are shown.

You can see a list of the new features for the platform and all of the services at What's new in Cloud Pak for Data.

Installing or upgrading Decision Optimization

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Related documentation:

Refresh 6 of Cloud Pak for DataVersion 3.5.0

A new version of Decision Optimization was released in May 2021.

Assembly version: 3.5.5

Version 3.5.5 of the Decision Optimization service includes various security fixes.

Refresh 5 of Cloud Pak for Data Version 3.5.0

A new version of Decision Optimization was released in April 2021.

Assembly version: 3.5.4

This release includes various security fixes and this bug fix.

Bug fix
This release includes the following fix:
  • Issue When exporting a Watson Studio project, the Decision Optimization export failed silently if one of its scenarios did not contain a model.

    Resolution This is now resolved. The project export contains the Decision Optimization experiment with all of its scenarios.

Refresh 2 of Cloud Pak for Data Version 3.5

A new version of Decision Optimization was released in January 2021.

Assembly version: 3.5.1

This release includes the following changes:

Bug fixes
This release includes the following fixes:
  • Issue: Switching quickly between scenarios in a Decision Optimization Experiment, after running multiple scenarios simultaneously, sometimes resulted in the input and output table views in the Prepare Data and Explore Solution tabs not being correctly updated. This might have led to the wrong interpretation of results.

    Resolution: This is now resolved.

Security fixes
This release includes fixes for the following security issues:
  • The following issue is fixed by upgrading to the latest version of Cryptsetup (2.3.3 or later), available from the Cryptsetup GIT Repository:
  • The following issues are fixed by referring to glibc.git Repository for patch, upgrade or suggested workaround information:
  • The following issue is fixed by upgrading to the latest version of glibc (2.32), available from the GNU C Library GIT Repository.
  • The following issue is fixed by upgrading to the latest version of Google Chrome 86.0.4240.111 or later), available from the Google Chrome Releases website:
  • The following issue is fixed by upgrading to the latest version of Google Chrome (80.0.3987.87 or later), available from the Google Chrome Releases website:
  • The following issue is fixed by upgrading to the latest version of GnuPG (2.2.17 or later), available from the GnuPG website:
  • The following issues are fixed by referring to the appropriate IBM Security Bulletin for patch, upgrade or suggested workaround information:
  • The following issue is fixed by upgrading to the latest version of libarchive (3.4.0 or later), available from the libarchive website.
  • The following issue is fixed by applying the patch for this vulnerability, available from the libpcap GIT Repository.
  • The following issue is fixed by upgrading to the latest version of libgcrypt (1.8.5 or later), available from the libgcrypt GIT Repository:
  • The following issues are fixed by referring to libexpat GIT Repository for patch, upgrade or suggested workaround information:
  • The following issue is fixed by upgrading to the latest version of libssh (0.8.9, 0.9.4 or later), available from the libssh website:
  • The following issue is fixed by upgrading to the latest version of libssh (0.9.3, 0.8.8 or later), available from the libssh website:
  • The following issue is fixed by upgrading to the latest version of libsolv (0.7.6 or later), available from the libsolv GIT Repository:
  • The following issue is fixed by referring to libxml2 GIT Repository for patch, upgrade or suggested workaround information:
  • The following issue is fixed by referring to OpenSSL Security Advisory [6 December 2019] for patch, upgrade or suggested workaround information:
  • The following issue is fixed by referring to Project curl Security Advisory, June 24th 2020 for patch, upgrade or suggested workaround information:
  • The following issues are fixed by upgrading to the latest version of Python, available from the Python website:
  • The following issue is fixed by referring to Python Issue38243 for patch, upgrade or suggested workaround information:
  • The following issues are fixed by referring to SQLite GIT Repository for patch, upgrade or suggested workaround information:
  • The following issue is fixed by referring to SQLite Check-in [a4dd1489] for patch, upgrade or suggested workaround information:
  • The following issue is fixed by referring to SQLite Check-in [eca0ba2c] for patch, upgrade or suggested workaround information:
  • The following issue is fixed by referring to SQLite Check-in [0d69f76f] for patch, upgrade or suggested workaround information:
  • The following issue is fixed by upgrading to the latest version of SQLite (3.28.0 or later), available from the SQLite website:
  • The following issue is fixed by referring to the SQLite website for patch, upgrade or suggested workaround information:
  • The following issue is fixed by upgrading to the latest version of systemd (243 or later), available from the systemd GIT Repository:.
  • The following issue is fixed by upgrading to the latest version of PCRE (10.34 or later), available from the PCRE website:
  • The following issue is fixed by upgrading to the latest version of Vim (8.1.0881 or later), available from the Vim GIT Repository:

Initial release of Cloud Pak for Data Version 3.5

A new version of Decision Optimization was released as part of Cloud Pak for Data Version 3.5.

Assembly version: 3.5.0

This release includes the following changes:

New features
Overview pane in the model builder
The overview pane provides you with model, data and solution summary information for all your scenarios at a glance. From this view you can also open an information pane where you can create or choose your deployment space.

For details, see the Overview section in Decision Optimization model builder views and scenarios .

Enhanced Explore solution view in the model builder
The Explore solution view of the model builder shows you more information about the objectives (or KPIs), solution tables, constraint or bounds relaxations or conflicts, engine statistics, and log files.

For details, see the Explore solution view section in Decision Optimization model builder views and scenarios .

Gantt charts available for any type of data
From the Visualization view of the model builder, you can create Gantt charts for any type of data, where it is meaningful. Gantt charts are no longer restricted to scheduling models only.

Visualization view with Gantt chart

For details, see the Gantt chart widget section in Visualization view.

Support for Python 3.7
The Decision Optimization model builder now targets the Python 3.7 runtime when generating notebooks from scenarios. In Watson™ Machine Learning, the Decision Optimization runtime now runs Python 3.7.
Improved data schema editing in the Modeling Assistant
You can now define data types for table columns and edit data schema when you use the Modeling Assistant.
Delegation of CPLEX engine solve to Watson Machine Learning
You can now delegate the Decision Optimization solve to run on Watson Machine Learning from your Java CPLEX or CPO models.
Language support

The Decision Optimization interface is now translated into multiple languages.