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Yet Another Math Programming Consultant

yetanothermathprogrammingconsultant.blogspot.com

2022

Rewriting old GAMS codeoriginal ↗
10 Apr 2022
Bostock's command-line cartography tutorial under Windowsoriginal ↗
5 Mar 2022
Wanted: better error messagesoriginal ↗
18 Feb 2022
SLSQP original paperoriginal ↗
16 Feb 2022
Visualization: Animating flow along an edgeoriginal ↗
15 Feb 2022
4-color maps: another modeloriginal ↗
10 Feb 2022
Is a heuristic a solver?original ↗
31 Jan 2022
A different coloring problemoriginal ↗
25 Jan 2022
Coloring the US county maporiginal ↗
24 Jan 2022
An All-Paths Network Problemoriginal ↗
19 Jan 2022

2021

Importing JSON files into GAMSoriginal ↗
28 Dec 2021
MacMahon Squaresoriginal ↗
26 Dec 2021
Solve status: not as easy as it looksoriginal ↗
18 Nov 2021
Shortest path in GAMSoriginal ↗
7 Nov 2021
Transportation Model (sharing a PowerPoint presentation)original ↗
1 Nov 2021
A multi-objective nonlinear integer programming problemoriginal ↗
21 Oct 2021
Stacking 3d boxes under rotationoriginal ↗
16 Oct 2021
2d knapsack problemoriginal ↗
12 Oct 2021
Another Rook Tour on the Chessboardoriginal ↗
28 Sept 2021
A covering problem: runners vs Ragnar relay legsoriginal ↗
28 Sept 2021
Reallocate people: a very small but interesting LPoriginal ↗
17 Sept 2021
Huber regression: different formulationsoriginal ↗
10 Sept 2021
matrix operations via GAMS Embedded Python: multi-regional Input-Output tablesoriginal ↗
31 Aug 2021
Stable Marriage Problemoriginal ↗
15 Aug 2021
A network model: Pyomo vs GAMSoriginal ↗
8 Aug 2021
A scheduling problem: a modeling approachoriginal ↗
31 Jul 2021
A variant of an assignment problemoriginal ↗
27 Jul 2021
Spatial Equilibriumoriginal ↗
20 Jul 2021
GAMS Singleton Set Issueoriginal ↗
12 Jul 2021
Another sports schedule problemoriginal ↗
5 Jul 2021
Arranging points on a lineoriginal ↗
30 Jun 2021
Median, quantiles and quantile regression as linear programming problemsoriginal ↗
12 Jun 2021
Automatic differentiation and Googleoriginal ↗
10 Jun 2021
Portfolio optimization with risk as constraint?original ↗
8 Jun 2021
Total Least Squares: nonconvex optimizationoriginal ↗
3 Jun 2021
Solving linear complementarity problems without an LCP solveroriginal ↗
23 May 2021
Clustering modelsoriginal ↗
10 May 2021
What is this BRATIO option in GAMS?original ↗
29 Apr 2021
Inverting a matrix by LPoriginal ↗
20 Apr 2021
Parallel machine scheduling II, three more formulationsoriginal ↗
19 Apr 2021
This is really a modeling issueoriginal ↗
5 Apr 2021
Mathematical Notationoriginal ↗
29 Mar 2021
Parallel machine scheduling I, two formulationsoriginal ↗
29 Mar 2021
SOS1 sets: when to use themoriginal ↗
23 Mar 2021
MST + few Steiner points: convex quadratic modeloriginal ↗
17 Mar 2021
Excel Never Diesoriginal ↗
16 Mar 2021
Euclidean Steiner tree problems as MISOCPoriginal ↗
15 Mar 2021
Some new/unknown LP/MIP solversoriginal ↗
12 Mar 2021
Minimum Spanning Trees in Math Programming Modelsoriginal ↗
8 Mar 2021
A difficult multi-line regression data setoriginal ↗
1 Mar 2021
A strange regression problem: multiple-line fittingoriginal ↗
25 Feb 2021
2d bin packing with Google OR-Tools CP-SAT, how to fix?original ↗
20 Feb 2021
An easy variant of 2d bin packingoriginal ↗
19 Feb 2021
2d Bin Packingoriginal ↗
16 Feb 2021
Non-differentiable NLP vs LPoriginal ↗
5 Feb 2021
Dijkstra confusionoriginal ↗
3 Feb 2021
Assignment problem with a wrinkle formulated as a network problemoriginal ↗
28 Jan 2021
An assignment problem with a wrinkleoriginal ↗
27 Jan 2021
Continuous max sum rectangle: MIQP vs GAoriginal ↗
20 Jan 2021
Submatrix with Largest Sumoriginal ↗
19 Jan 2021
Eight soldiers lining up: a very large permutation problemoriginal ↗
6 Jan 2021
Continuous Facility Location: Symmetry, SOCP and grid searchoriginal ↗
4 Jan 2021

2020

Numbrix puzzle via TSPoriginal ↗
24 Dec 2020
Numbrix puzzle via MIPoriginal ↗
22 Dec 2020
GAMS + R Markdown scriptingoriginal ↗
21 Dec 2020
GAMS + R scriptingoriginal ↗
19 Dec 2020
Modeling a simple implicationoriginal ↗
15 Dec 2020
Electronic Amoeba for solving TSPs?original ↗
11 Dec 2020
Directed vs undirected networks in math programming modelsoriginal ↗
7 Dec 2020
QuadProg: usage issuesoriginal ↗
30 Nov 2020
Machine scheduling: Maintenance and maximum runlengthoriginal ↗
23 Nov 2020
OR Scientist Job @ Amobeeoriginal ↗
20 Nov 2020
Gurobi 9.1 Performance Improvement and New Features.original ↗
6 Nov 2020
Optimal (Q,R) Inventory Policy as a MIPoriginal ↗
6 Nov 2020
Finding a cluster of closest pointsoriginal ↗
27 Oct 2020
Solution methods for linear bilevel problemsoriginal ↗
26 Oct 2020
PuLP mysteryoriginal ↗
18 Oct 2020
Maximum Correlation, Global MINLP vs GAoriginal ↗
8 Oct 2020
Excel has a 1 million row limit: missing covid tests dataoriginal ↗
5 Oct 2020
Fix non positive semi-definite covariance matrix in Roriginal ↗
29 Sept 2020
Limiting the number of changes in the operating mode of a machineoriginal ↗
23 Sept 2020
Cover points with tilesoriginal ↗
14 Sept 2020
Optimal double exponential smoothingoriginal ↗
5 Sept 2020
Speed datingoriginal ↗
31 Aug 2020
MINLP vs MIQCPoriginal ↗
26 Aug 2020
A variant of the max-sum-subarray problemoriginal ↗
17 Aug 2020
Largest Rectangular Area in a Histogramoriginal ↗
11 Aug 2020
Concatenate numbers is not easy in a MIP modeloriginal ↗
5 Aug 2020
Seemingly simple but tricky NLPoriginal ↗
30 Jul 2020
Cabbage against covidoriginal ↗
21 Jul 2020
Finally an important polling question....original ↗
17 Jul 2020
Longest Increasing Subsequenceoriginal ↗
14 Jul 2020
Select m items but optimize for the best k itemsoriginal ↗
25 Jun 2020
Small example: ordering of binary variablesoriginal ↗
19 Jun 2020
Designing a sports scheduleoriginal ↗
13 Jun 2020
A Set Partitioning Problem and Infeasible Data Setsoriginal ↗
12 Jun 2020
A facility location problem: debunking a mythoriginal ↗
7 Jun 2020
Simplify solutionsoriginal ↗
1 Jun 2020
Pictures don't matchoriginal ↗
30 May 2020
Installing Pyomo on colab by googleoriginal ↗
30 May 2020
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