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There are some minor changes to the user interface in order to allow
the use of the new features. If you have code written for an older
version, you will have to make some very minor modifications before
compiling with version 2.8.
- user_start_heurs() now
includes as an optional return value a user-calculated
estimate of the optimal upper bound. This estimate is used to
control diving. See the description of the new
diving rules
for more information. Since this return value is optional, you
need only add the extra argument to your function definition to
upgrade to the 2.8 interface. No changes to your code are
required.
- user_check_cut() now
includes as an optional return value a user-defined assessment
of the current quality of the cut. Since this return value is
optional, you need only add the extra argument to your
function definition to upgrade to the 2.8 interface. No
changes to your code are required.
- user_select_candidates() now passes in the value of the
current level in the tree in case the user wants to use this
information to make branching decisions. Again, the new
argument just needs to be added to the function definition. No
changes to your code are required.
Next: Getting Started
Up: Introduction
Previous: New in Version 2.8
Ted Ralphs
2000-09-08