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

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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IPOPT with HSL vs MUMPS

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

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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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Linearisation techniques for MINLPs

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

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Which ML algorithms work by solving constrained optimisation problems?

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

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Dedicated solver for convex problems

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

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

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

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Automatic detection of SOS variables and constraints

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

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Ways to strengthen QCQP relaxations

solver relaxation qcqp asked Mar 6 '20 at 16:31

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Top Answers

MATLAB vs. Python in industry

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What are Operations Research problems which occur in everyday life?

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A billion dead?

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How can I deal with non-operations research managers?

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What are Operations Research applications for 'good causes'?

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What is a “hard problem” in the context of Mixed-integer programming?

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How to convince people that OR can help them?

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What's the current status of the Vehicle Routing Problem in the logistics industry?

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How can I avoid overuse of words like “however” and “therefore” in academic writing?

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Are Python and Julia used for optimization in industry?

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What is the difference between optimization software APIs based on performance and speed?

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

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Combinatorial problem in my daughter’s class

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How do Quadratic Programming solvers handle variables without bounds?

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Understanding integer programming solvers

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How to improve the quality of code in OR?

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Branch and Bound Implementation

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Algorithms vs LP or MIP

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State-of-the-art algorithms for solving linear programs

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Comparison of Algebraic modelling languages and general programming languages

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What are the solvers that give a feasible solution within a given time?

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Can presolve reductions change the value of the linear programming relaxation?

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Modeling and solvers

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How to implement a “generic” solver for scheduling problems?

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Trustful Nonlinear Programming

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What is the best way to read papers in OR/MS field?

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Diving heuristics in branch and bound

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Parallel nonlinear solvers

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Academic Licenses of Baron & Knitro

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Operations Research Apps for everyday use

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