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dirkschumacher
/
ompr
R package to model Mixed Integer Linear Programs
https://dirkschumacher.github.io/ompr/
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add dependency matrix to constrains
#450
RKonstantinR
opened
2 months ago
19
Fix pkg down error
#448
dirkschumacher
closed
10 months ago
0
Fix/pkg docs
#446
dirkschumacher
closed
10 months ago
0
Request Feature: Add Vectorized semantics revisited of MILPModel to MIPModel
#445
sbmack
opened
11 months ago
0
interactions: "Quadratic expression are not supported"
#444
seschaub
opened
1 year ago
3
How write a constraint once there is a variable used as the index?
#442
Arash-72
closed
10 months ago
2
Limiting Variable Definition By Ordered Pair
#441
datadrivensupplychain
closed
1 year ago
9
Sparse Matrix Constraints with multi-index
#439
optimizationnoob
opened
1 year ago
0
Feature Request: adding "macro" functionality to ompr
#438
sbmack
opened
1 year ago
1
Again, my curious interest is in pre-processing sparse data objects outside of MIPModel if possible. I created a simple sparse supply chain dataframe as an example:
#437
sbmack
closed
1 year ago
0
the cannery problem - vignette enhancement
#436
brilstl
opened
1 year ago
0
Getting error "*.AbstractLinearFunction" when multiplying in objective function
#435
Alexandertj1996
closed
1 year ago
1
Release/v1.0.3
#434
dirkschumacher
closed
1 year ago
0
Release ompr 1.0.3
#433
dirkschumacher
closed
1 year ago
0
Make 0 coefficients implicit in matrix generation
#432
dirkschumacher
closed
1 year ago
0
Object not found
#430
justlebeau
closed
1 year ago
3
Error in add_variable, object not found
#427
kstegeman
closed
2 years ago
1
Feature Request: GAMS presolver for ompr
#426
harryprince
opened
2 years ago
1
Feature Request Integrated with RAMPL
#425
harryprince
opened
2 years ago
1
Semi continuous variable
#424
datadrivensupplychain
opened
2 years ago
7
Solver log not showing up anymore
#423
multiduplikator
opened
2 years ago
0
Binary variable <= Binary matrix: Error in constraint$lhs - constraint$rhs : non-numeric argument to binary operator
#422
datadrivensupplychain
opened
2 years ago
4
Gurobi Solver- Recent Experience?
#420
datadrivensupplychain
closed
2 years ago
1
NEOS Server & Async Mode: Error: object of type 'closure' is not subsettable
#418
datadrivensupplychain
closed
2 years ago
0
"Error: You have definied variables for 1 rows, but you add a constant with N elements"
#417
datadrivensupplychain
closed
2 years ago
1
Update version in citation file
#416
dirkschumacher
closed
2 years ago
0
inequalities evaluated to true/false at build time should still be passed to the solver
#415
dirkschumacher
opened
2 years ago
0
Error in `multiply.LinearTerm()`: ! Quadratic expression are not supported
#414
Patrikios
closed
2 years ago
5
Error in MIPModel construction without %>% piping
#413
sbmack
closed
2 years ago
1
Error Code "Error: object 'x' not found"
#410
donojazz
opened
2 years ago
4
Release 1.0.2
#409
dirkschumacher
closed
2 years ago
0
Release ompr 1.0.2
#408
dirkschumacher
closed
2 years ago
1
Fix Bug #404
#407
dirkschumacher
closed
2 years ago
0
Solution ordering in R 3.x
#404
dkutner
closed
2 years ago
2
S3
#403
dirkschumacher
closed
2 years ago
3
Set bounds in one batch
#402
dirkschumacher
closed
2 years ago
0
Fix a (non) issue with counting variables
#401
dirkschumacher
closed
2 years ago
0
Implement Quadratic Constraints/Objectives
#400
dirkschumacher
opened
2 years ago
1
Investigate the use of S3 double dispatch for algebra
#399
dirkschumacher
closed
2 years ago
0
Variable not found for indexes error
#398
BajczA475
closed
2 years ago
10
Release v1
#396
dirkschumacher
closed
2 years ago
0
Release ompr 1.0.0
#395
dirkschumacher
closed
2 years ago
0
Speed up reduce_coefficients
#394
dirkschumacher
closed
2 years ago
0
Improve get_solution
#393
dirkschumacher
closed
2 years ago
0
Add citation file
#392
dirkschumacher
closed
2 years ago
0
Error in ompr::new_solution
#391
BajczA475
closed
2 years ago
3
Addsolverinfo
#389
dirkschumacher
closed
2 years ago
0
Add solver status "success"
#388
dirkschumacher
closed
2 years ago
0
Support additional solver output
#384
dirkschumacher
closed
2 years ago
0
Improve docs
#383
dirkschumacher
closed
2 years ago
0
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