PRIMA @LibPrima
PRIMA is a package for solving general nonlinear optimization problems without using derivatives. It provides the reference implementation of Powell's methods. libprima.net Hong Kong Joined December 2022-
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An issue with `parfor` in MATLAB R2023a--R2025a stackoverflow.com/q/79768366/118…
MATLAB R2025a on GitHub Actions: Some base dependencies are not installed by setup-matlab, leading to crashes during run-command github.com/matlab-actions…
Fortran: Implementating a parametrized objective function without using module variables or internal subroutines stackoverflow.com/q/79705107/118…
Thread-safe implementation of a parametrized objective function without using internal subroutines fortran-lang.discourse.group/t/thread-safe-…
This is on the front page of Hacker News right now. @lfortranorg @OndrejCertik news.ycombinator.com/news
This is on the front page of Hacker News right now. @lfortranorg @OndrejCertik news.ycombinator.com/news
I've just contributed to @lfortranorg. Consider supporting them too — every little helps! opencollective.com/lfortran via @opencollect
I've just contributed to @lfortranorg. Consider supporting them too — every little helps! opencollective.com/lfortran via @opencollect
AMA Colloquium by Professor Katya Scheinberg, Georgia Tech.: Stochastic Oracles and Where to Find Them Date: 20/11/2024 Wed. Time: 3-4pm (HK Time) Venue: Y306, PolyU
You are cordially invited to the CAS AMSS-PolyU JLab of Applied Mathematics Workshop on "Variational Analysis and Nonsmooth Optimization" on 2 - 4 December 2024 (Monday - Wednesday). Website: events.polyu.edu.hk/vano/
`pdflatex` in TeX Live 2024 stops compiling SIAM article template after `tlmgr update --self && tlmgr update --all` on 8 Nov. 2024 tex.stackexchange.com/q/730628/22961…
polyu.edu.hk/ama/news-and-e… My team has been honored with the "Award for Applications of Operations Research" by the Operations Research Society of China (ORSC), for our contributions to the industry through the development of derivative-free optimization solvers.
See libprima.net and cobyqa.com
Online seminar by Professor Nick Trefethen, Harvard University. THE AAA ALGORITHM FOR RATIONAL APPROXIMATION 5 July 2024 (Friday), 04:00 pm – 05:00 pm (HK Time) Host: Dr. Zaikun ZHANG, Hong Kong PolyU Zoom ID: 825 3771 4666 Password: 0705 Zoom Link: polyu.hk/qxfgC
COBYQA (cobyqa.com) is included in SciPy 1.14.0 as a release highlight (bit.ly/3VJkkI1). It is by Tom M. Ragonneau @TomRagonneau and Zaikun Zhang @zaikunzhang at Hong Kong PolyU and introduced in Ch. 5--7 of Ragonneau's thesis supervised by Zhang and Chen.
PolyU Seminar by Prof. J. Nocedal, Northwestern University: Some Open Questions in Deep Neural Network Optimization Date: Wednesday 12th June 2024 Time: 9-10 am UTC+8 Host: Zaikun ZHANG, AMA Zoom Link: polyu.zoom.us/j/85302165067?…
PRIMA has got a Python interface! Thank you @nickolai89 ! fortran-lang.discourse.group/t/prima-has-go…
From @NAGTalk : Please be assured that we do not view this issue as unimportant, I am sorry that our position was miscommunicated to you in this way. We are actively considering alternative options for licensing but are not yet in a position to implement the necessary changes.
From @NAGTalk : Please be assured that we do not view this issue as unimportant, I am sorry that our position was miscommunicated to you in this way. We are actively considering alternative options for licensing but are not yet in a position to implement the necessary changes.
Make NAG compilers available on GitHub-hosted runners @NAGTalk github.com/numericalalgor…

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Ondřej Čertík @OndrejCertik
1K Followers 320 Following At @Microsoft, previously @gsitechnology, @LosAlamosNatLab. Original author of @SymPy, SymEngine, @LFortranorg, LPython, co-founder of @fortranlang org.
ZHANG Zaikun @zaikunzhang
19 Followers 19 Following I am a Chinese Mathematician working on optimization algorithms and theory at Sun Yat-sen University. See my homepage at https://t.co/Jpwuzk8CEX .