#10341: make MIP backend interface more Python-ic
----------------------------------------------+-----------------------------
Reporter: malb | Owner: ncohen
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.6.2
Component: linear programming | Keywords: LP, MIP
Author: Martin Albrecht, Nathann Cohen | Upstream: N/A
Reviewer: Martin Albrecht, Nathann Cohen | Merged:
Work_issues: |
----------------------------------------------+-----------------------------
Changes (by ncohen):
* status: needs_info => needs_work
Old description:
> Sage 4.6.1 will contain a new set of backend classes for mixed integer
> programming, which will make it easier to write interfaces for other
> solvers. There has been some off-list discussion about this interface and
> the follow changes were agreed upon:
>
> * :func: `add_linear_constraint` should allow ``lb`` and ``ub`` instead
> of direction and one bound, it's more expressive.
> * :func:`add_variable` should return the index of the newly created
> variable instead of the next index.
> * change :func:`add_linear_constraint` to accept any iterable of the
> form`` [(c,v) ...]``
> * ``min`` and ``max`` should be lower bound (or ``lb``) and upper bound
> (or ``ub``) to conform to MIP conventions
> * allow parameters in :func:`add_variable`
>
> The patches are to be applied in this order:
>
> * mip_interface_changes.patch
> * trac_10431-part2.patch
> * trac_10431-part3.patch
> * trac_10431-part4.patch
New description:
Sage 4.6.1 will contain a new set of backend classes for mixed integer
programming, which will make it easier to write interfaces for other
solvers. There has been some off-list discussion about this interface and
the follow changes were agreed upon:
* :func: `add_linear_constraint` should allow ``lb`` and ``ub`` instead
of direction and one bound, it's more expressive.
* :func:`add_variable` should return the index of the newly created
variable instead of the next index.
* change :func:`add_linear_constraint` to accept any iterable of the
form`` [(c,v) ...]``
* ``min`` and ``max`` should be lower bound (or ``lb``) and upper bound
(or ``ub``) to conform to MIP conventions
* allow parameters in :func:`add_variable`
The patches are to be applied in this order:
* mip_interface_changes.patch
* trac_10431-part2.patch
* trac_10431-part3.patch
* trac_10431-part4.patch
* trac_10431-part5.patch
--
Comment:
It should ! I forgot to update the ticket's description `:-)`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10341#comment:50>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
