Browse categories
Explore
Fiverr Pro
English
$
USD
I will formulate and solve lp nlp mip models in lingo
Operations Research engineer
Operations Research engineer building optimization for routing & scheduling (VRP/VRPTW, MIP, network flow) in logistics, ports & manufacturing. Write clean, reproducible Python and integrate with SQL/...
About this Gig
I turn a plain spec (Word, PDF, notes) into a clean and auditable LINGO model and deliver reproducible runs. You will get readable sets, parameters, variables, objective, and constraints in a single .lng file, plus sample data and a short guide to run and modify instances.
What I do
- Build LP or MIP models from your spec and data
- Name everything clearly and expose limits as parameters (no magic numbers)
- Provide a tidy solution table with objective value and key variables
- Add basic checks: visit or flow balance if relevant, bounds, quick sanity KPIs
- Tune time limit and MIP gap as needed and document the run
What you receive
- .lng model file and sample data
- Results tables (objective and selected variables), and a short README
- Standard and Premium include a brief report; Premium can add scenarios and sensitivity
Notes
- Academic integrity respected: I help with modeling and explanations, not submitting graded work on your behalf.
- Large or custom formats are welcome; message me for a custom offer before ordering.
My Portfolio
FAQ
What info should I send to start?
A short spec of the goal and hard constraints, a small data sample (CSV or Excel), and any size hint such as numbers of items or links.
Can you work from non-English material?
Yes. English or Chinese are both fine. I will standardize symbols and notation.
Do you guarantee optimal solutions for big MIPs?
I provide the best found solution with documented time and gap settings. A full proof of optimality for large models may require extended runtime or decomposition via a custom offer.
What files will I get?
The LINGO .lng file, sample data, results tables, and a short README. Standard and Premium include a brief report; Premium can include scenario and sensitivity tables.
Can you convert the LINGO model to Python or CPLEX later?
Yes. Model translation or refactoring to DOcplex, OR-Tools, or Gurobi is available as a separate job.
