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LarrySnyder610's user avatar
LarrySnyder610's user avatar
LarrySnyder610
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33 votes
4 answers
1k views

Why are integer minimax problems hard?

32 votes
3 answers
19k views

In an integer program, how I can force a binary variable to equal 1 if some condition holds?

26 votes
5 answers
2k views

Solving pricing problem heuristically in column generation algorithm for VRP

21 votes
2 answers
351 views

Real-world examples of supply chain contracts?

20 votes
1 answer
3k views

What's the difference between Lagrangian relaxation and Lagrangian decomposition?

20 votes
2 answers
4k views

Reference for "expectation preserves convexity"

18 votes
8 answers
2k views

Are metaheuristics ever practical for continuous optimization?

17 votes
1 answer
5k views

What is the "big-M" method? And are there two of them?

15 votes
1 answer
189 views

Symmetric undirected $p$-median instance with fractional LP solution?

13 votes
6 answers
262 views

How to formulate: each pair of elements in $A$ has one common unit in $B$

12 votes
2 answers
3k views

In an integer program, how can I “activate” a constraint only if a decision variable has a certain value?

12 votes
4 answers
2k views

Normal demand and normal lead time; is lead-time demand normal?

12 votes
2 answers
5k views

Loss functions for specific probability distributions?

11 votes
2 answers
182 views

How to quantify the "griddiness" of a set of points?

11 votes
2 answers
405 views

Is there a fixed worst-case error bound for farthest-insertion?

11 votes
1 answer
633 views

I've formulated my optimization model; now what?

11 votes
4 answers
388 views

Proof of bound on optimal TSP tour length in rectangular region

10 votes
4 answers
609 views

Units in the EOQ problem

10 votes
1 answer
14k views

How do I access the value of a variable in PuLP?

8 votes
0 answers
155 views

Is a base-stock policy optimal for a serial inventory system with upstream stockout costs?

7 votes
2 answers
5k views

Optimal power flow vs. economic dispatch

6 votes
2 answers
236 views

Three newsvendor functions, three optimal solutions—which is correct?

5 votes
1 answer
166 views

Which EOQ-based $(r,Q)$ approximation has a fixed worst-case error bound?

4 votes
1 answer
381 views

Declare numerical-sequence set in AMPL .dat file