Stack Exchange

Nikos Kazazakis

London, UK

I am a numerical solver developer and the CEO of Octeract. I have a PhD in deterministic global optimization and my latest project is Octeract Engine, a high performance deterministic global optimization solver. My main language is C++, but I also use Python, Javascript, React, and C for the really high performance stuff.

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Top Questions
22 votes

Find feasible point in polynomial time in linear programming

linear-programming feasible-points interior-point-method asked Aug 27 '19 at 0:52
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15 votes

IPOPT with HSL vs MUMPS

nonlinear-programming algorithms nonconvex-programming linear-algebra asked Sep 26 '19 at 13:02
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14 votes

How to formulate a problem to prove/disprove convexity?

nonlinear-programming convexity nonconvex-programming asked Sep 3 '19 at 17:19
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12 votes

Linearisation techniques for MINLPs

mixed-integer-programming nonlinear-programming linearization asked Sep 12 '19 at 13:22
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12 votes

Which ML algorithms work by solving constrained optimisation problems?

constraint machine-learning asked Oct 24 '19 at 11:39
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11 votes

Dedicated solver for convex problems

solver nonlinear-programming convexity asked Oct 3 '19 at 10:11
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10 votes

Is there a library of infeasible MINLP problems?

minlp feasible-points test-instances problem-library asked Oct 31 '19 at 15:26
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7 votes

Automatic detection of SOS variables and constraints

mixed-integer-programming integer-programming asked Dec 9 '19 at 11:44
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7 votes

Why is the Ellipsoid Method of polynomial complexity?

linear-programming computational-complexity asked Aug 29 '19 at 19:09
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7 votes

How to see compiler reformulation of C++ code with optimizations

c++ g++ clang compiler-optimization asked Mar 7 '17 at 21:21
stackoverflow.com

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Top Answers
18
A billion dead?
worldbuilding.stackexchange.com

13
What is a “hard problem” in the context of Mixed-integer programming?
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11
What is the difference between optimization software APIs based on performance and speed?
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9
What's the current status of the Vehicle Routing Problem in the logistics industry?
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8
Algorithms vs LP or MIP
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8
State-of-the-art algorithms for solving linear programs
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8
Branch and Bound Implementation
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7
Diving heuristics in branch and bound
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7
Comparison of Algebraic modelling languages and general programming languages
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7
How to implement a “generic” solver for scheduling problems?
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7
Modeling and solvers
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6
How does the search space affect the speed of an ILP solver?
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6
Parallel nonlinear solvers
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6
Is this formulation linear or non-linear?
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6
Implementing solvers with Object Oriented Programming
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6
Constraint programming using solver: how to state the time limit of search?
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5
What are the reasons OR industry projects fail?
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5
Optimising the current model
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5
Trade off between number of constraints and bounds of a variable
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5
How to innovate in OR
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5
Problems Installing APOPT in Pyomo
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5
How could we simplify solving the large scale MIPs without using any advanced methods like decompositions?
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5
Should I factor in time as a parameter or a variable in a scheduling problem with MILP?
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5
Decoding a Deep Neural Network as an Analytical Expression for Optimization Purpose
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5
Operations Research Apps for everyday use
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5
What global MINLP solvers support trigonometric functions?
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5
How to see compiler reformulation of C++ code with optimizations
stackoverflow.com

5
Solving a non-linear non-convex mixed-integer program
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