Opened 6 years ago
Last modified 2 months ago
#20302 new task
Meta-ticket: Improvements to MixedIntegerLinearProgram, its backends, and InteractiveLinearProgram — at Version 66
Reported by: | mkoeppe | Owned by: | |
---|---|---|---|
Priority: | major | Milestone: | sage-9.5 |
Component: | numerical | Keywords: | lp |
Cc: | dimpase, vdelecroix, vbraun, jdemeyer, chapoton, fbissey, Rudi, novoselt, moritz, jipilab, mmasdeu, klee, tmonteil, mforets, yzh | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | #20296 | Stopgaps: |
Description (last modified by )
Frontend defects:
- #20304: More error checking in
MixedIntegerLinearProgram
- #13696: process chained equalities with different signs correctly
- #14540: MILP constraints are silently misunderstood
- #15159: Segfault after deepcopy of
MixedIntegerLinearProgram
- #20461: Fixes for copying a MIP and its variables
- #20462:
MixedIntegerLinearProgram
/MIPVariable
:get_min
,set_min
,get_max
,set_max
are broken - #20602: Deprecate
MixedIntegerLinearProgram.gen()
,__call__
,linear_function
, which do not do anything useful; adddefault_variable
method - #20656:
MixedIntegerLinearProgram
: Remove_variables
dictionary - #20657: More fixes for copying a MIP and the
MIPVariable
s created bynew_variable
Frontend wishlist tickets:
- #7574: clean up of MIP interface
- #20406:
get_solver
should allow passing a function (a solver factory) as the solver argument - #19523: Raise an error when constraints are added to the wrong MILP
- #20664:
MixedIntegerLinearProgram
/MIPVariable
API cleanup - #20773:
MixedIntegerLinearProgram.new_variable
could optionally take a "static" list of component indices - #20331: A
MIPVariable
's repr should include some useful information - #18733:
MixedIntegerLinearProgram
should support tableau-query methods - #18688:
MixedIntegerLinearProgram
should support basis status getting/setting - #7290: Dual method for linear programs (dup: #13141)
- #18466: Optimal dual solution of LP from
MixedIntegerLinearProgram
- #7300: Display tight constraints
- #7790: Setting a default max/min bound when calling
MixedIntegerLinearProgram.new_variable
- #15356: linear programming enhancements
- #15583:
sage.numerical.linear_functions.LinearConstraint
is not a hashable type
Improvements to backends:
- #18685: Add basis status functions
get_col_stat
,get_row_stat
to GLPK backend - #18732: Add tableau query functions
glp_eval_tab_row
,glp_eval_tab_col
to GLPK backend - #18763: COIN backend should support basis status and tableau data functions
- #18838: GLPK backend does not detect unboundedness in simplex-only mode
- #18764: Add
glp_exact
to Sage's GLPK bindings - #19471: COIN backend: More basis status and tableau data functions
- #19472: GLPK backend: More basis status and tableau data functions
- #20303: Fixes for
add_variables
in CVXOPT, PPL, GLPK MIP backends andadd_linear_constraints
in CVXOPT - #19525: enhancement: Improve GLPK error handling
- #20332:
CVXOPTBackend
: Set initialproblem_name
- #20361: PPL backend re-solves the problem every time
get_variable_value
orget_objective_value
is called - #10232: check GLPK bound errors
- #20354:
PPLBackend
: Add support for integer variables - #20326:
GenericBackend
: Fix doctest ofadd_linear_constraint_vector
- #20414: Add
copy
/__copy__
methods to CVXOPT, PPL, InteractiveLP backends - #20548: py3 print in numerical folder
- #18572: CVXOPT solver equations handling
- #20323: Common
TestSuite
for MIP backends - #20424: More tests for common MIP
TestSuite
- #20325:
GenericBackend
: Add default implementation ofadd_variables
andadd_linear_constraints
- #20328: tests related to cplex / gurobi
- #20600: more failing tests related to cplex / gurobi
- #20360: Add
sig_on
/sig_off
to COINBackend - #20458: GLPKBackend/GLPKExactBackend: Support "glp_simplex followed by glp_exact"
Improvements to the backend interface:
- #20337: MIP: Several fixes regarding constant terms in the objective function
- #20324: MIP backends: Unify
add_col
,add_variable
- #20362: MIP backends: Make variable type consistent between
add_variable
,set_variable_type
(with deprecation)
Improvements to underlying libraries:
- #19903 crash with
MIP_Problem
- #20351:
sage.libs.ppl.MIP_Problem
: Add support for integer variables - #19592: PPL Variables cannot be saved
- #20876: GLPK: glp_exact ignores verbosity level
New backends:
- #20296:
MixedIntegerLinearProgram
: New backend usingInteractiveLPProblem
- #20413:
InteractiveLPBackend
: Use standard-form transformation,objective_constant_term
, change defaultbase_ring
toQQ
- #20433:
InteractiveLPBackend
: Implementset_verbosity
- #20376:
LoggingBackend
- delegating MIP backend class that logs input/output to backend methods - #20446:
GLPKExactBackend
- a variation onGLPKBackend
that sets a solver parameter and signals errors on integer variables - #18735:
MixedIntegerLinearProgram
/HybridBackend
: Reconstruct exact rational/algebraic basic solution - #19219: MILP: Add "CyLP" backend
- #18862: Interface to COIN
OpenSolverInterface
- #10879: add optional SCIP integer constraint solver (dup: #8672)
- #21003: Add SCIP backend using PySCIPOpt
- #18766: Add bindings,
MixedIntegerLinearProgram
backend to qsopt_ex, a state-of-the-art exact simplex solver - #18765: Add Cython wrappers for GLPK's interface glpssx.h (exact rational simplex)
- #18847 create an interface to Mosek optimisation software
Interactions with InteractiveLinearProgram
and its dictionaries:
- #19097: Refactor run_[revised]_simplex_method; add run_dual_[revised]_simplex_method
- #18742: interactive_simplex_method: Support several styles corresponding to major textbooks
- #18852: interactive_simplex_method: Enable typesetting of run_simplex_method in SageMathCloud?
- #18734: Construct an
interactive_simplex_method.LPDictionary
from aMixedIntegerLinearProgram
- #20311:
interactive_simplex_method
enhancements - #20500:
LPAbstractDictionary
: Refactorleaving_coefficients
,entering_coefficients
using new methodsrow_coefficients
,column_coefficients
- #20559:
InteractiveLPProblem
, dictionaries:add_constraint
/add_row
methods - #20874:
LPAbstractDictionary
: Addobjective_name
method - #20203:
LPCleanDictionary
- floating-point helper class for interactive simplex method - #18804:
LPBackendDictionary
- a debugging view of a MIP backend connected tointeractive_simplex_method
- #20570:
InteractiveLPProblem
: refactorplot
method - #18805: Add didactical implementation of tableau cutting planes to
interactive_simplex_method
Interactions with polyhedra:
- #20301
Polyhedron.to_linear_program
should return the MIP variable used - #20415
Polyhedron.to_linear_program
should select solver bybase_ring
Applications:
- #20367: fix integer option and a bug in Delsarte bounds code
- #20416: Various callers of
MixedIntegerLinearProgram
should accept and pass through a solver argument - #20447: Wrong result from
delsarte_bound_additive_hamming_space
with GLPK exact simplex - #20766: avoid using maxima simplex algo in
lattice_polytope
SDP:
- #20506: dual variables handling in SDP solver(s)
Change History (66)
comment:1 Changed 6 years ago by
- Description modified (diff)
comment:2 Changed 6 years ago by
- Description modified (diff)
comment:3 Changed 6 years ago by
- Cc vdelecroix added
comment:4 Changed 6 years ago by
- Dependencies set to #20296
comment:5 Changed 6 years ago by
- Description modified (diff)
comment:6 Changed 6 years ago by
- Description modified (diff)
comment:7 Changed 6 years ago by
comment:8 Changed 6 years ago by
- Cc vbraun added
- Description modified (diff)
- Summary changed from Clean up MILP backend interface to Meta-ticket: Improvements to MixedIntegerLinearProgram and its backends
- Type changed from defect to task
comment:9 Changed 6 years ago by
- Description modified (diff)
comment:10 Changed 6 years ago by
- Description modified (diff)
comment:11 Changed 6 years ago by
- Cc jdemeyer added
comment:12 Changed 6 years ago by
- Description modified (diff)
comment:13 Changed 6 years ago by
- Description modified (diff)
comment:14 Changed 6 years ago by
- Description modified (diff)
comment:15 Changed 6 years ago by
- Description modified (diff)
comment:16 Changed 6 years ago by
- Description modified (diff)
comment:17 Changed 6 years ago by
- Description modified (diff)
comment:18 Changed 6 years ago by
- Description modified (diff)
comment:19 Changed 6 years ago by
- Description modified (diff)
comment:20 Changed 6 years ago by
- Description modified (diff)
comment:21 Changed 6 years ago by
- Description modified (diff)
comment:22 Changed 6 years ago by
- Description modified (diff)
comment:23 Changed 6 years ago by
- Description modified (diff)
comment:24 Changed 6 years ago by
- Description modified (diff)
comment:25 Changed 6 years ago by
- Description modified (diff)
comment:26 Changed 6 years ago by
- Description modified (diff)
comment:27 Changed 6 years ago by
- Description modified (diff)
comment:28 Changed 6 years ago by
- Description modified (diff)
comment:29 Changed 6 years ago by
- Description modified (diff)
comment:30 Changed 6 years ago by
- Description modified (diff)
comment:31 Changed 6 years ago by
- Description modified (diff)
comment:32 Changed 6 years ago by
- Description modified (diff)
comment:33 Changed 6 years ago by
- Description modified (diff)
comment:34 Changed 6 years ago by
- Description modified (diff)
comment:35 Changed 6 years ago by
- Description modified (diff)
comment:36 Changed 6 years ago by
- Description modified (diff)
comment:37 Changed 6 years ago by
- Description modified (diff)
comment:38 Changed 6 years ago by
- Description modified (diff)
comment:39 Changed 6 years ago by
- Description modified (diff)
comment:40 Changed 6 years ago by
- Description modified (diff)
comment:41 Changed 6 years ago by
- Description modified (diff)
comment:42 Changed 6 years ago by
- Description modified (diff)
comment:43 Changed 6 years ago by
- Description modified (diff)
comment:44 Changed 6 years ago by
- Description modified (diff)
comment:45 Changed 6 years ago by
- Description modified (diff)
comment:46 Changed 6 years ago by
- Description modified (diff)
comment:47 Changed 6 years ago by
- Description modified (diff)
comment:48 Changed 5 years ago by
- Description modified (diff)
comment:49 Changed 5 years ago by
- Description modified (diff)
comment:50 Changed 5 years ago by
- Description modified (diff)
comment:51 Changed 5 years ago by
- Description modified (diff)
comment:52 Changed 5 years ago by
- Description modified (diff)
comment:53 Changed 5 years ago by
- Description modified (diff)
comment:54 Changed 5 years ago by
- Description modified (diff)
comment:55 Changed 5 years ago by
- Description modified (diff)
comment:56 Changed 5 years ago by
- Cc chapoton added
comment:57 Changed 5 years ago by
- Description modified (diff)
comment:58 Changed 5 years ago by
- Description modified (diff)
comment:59 Changed 5 years ago by
- Cc fbissey added
comment:60 Changed 5 years ago by
- Description modified (diff)
comment:61 Changed 5 years ago by
- Cc Rudi added
comment:62 Changed 5 years ago by
- Cc novoselt added
- Description modified (diff)
- Summary changed from Meta-ticket: Improvements to MixedIntegerLinearProgram and its backends to Meta-ticket: Improvements to MixedIntegerLinearProgram, its backends, and InteractiveLinearProgram
comment:63 Changed 5 years ago by
- Description modified (diff)
comment:64 Changed 5 years ago by
- Description modified (diff)
- Milestone changed from sage-7.2 to sage-7.3
comment:65 Changed 5 years ago by
- Description modified (diff)
comment:66 Changed 5 years ago by
- Description modified (diff)
Note: See
TracTickets for help on using
tickets.
Description modified to remove my comments about
variable_upper_bound
andvariable_lower_bound
. I was misled by the interface description inGenericBackend
, which was out of sync with the real backends. Fixed in #20296