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#optimization

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New article published today in the Computers & Chemical Engineering journal: *A multi-agent system for hybrid optimization*. This paper is based on the work presented last year at the European Symposium on Computer Aided Process Engineering (ESCAPE 34) conference.

One key lesson I took away from this work: how easy it is to write efficient and effective multiprocessing code in Julia. And how much fun it is actually. 🙂

#MultiAgentSystem #Agents #Optimization #HybridOptimization #ProcessSystemsEngineering #CAPE #PSE #JuliaLang

doi.org/10.1016/j.compchemeng.

I have started a new blog which will present musings on coding for my research in optimization and its application to industrial engineering problems. I code mostly in Julia and always using Emacs.

homepages.ucl.ac.uk/~ucecesf/b

I will post here when new blog posts are posted. I'm hoping to create an RSS feed for the blog in due course.

The blog is written in org mode in Emacs (of course 🙂).

(edited to add actual link 😜)

www.homepages.ucl.ac.ukOptimal configuration
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2/6

The Constraints journal is seeking nominations for two awards that celebrate outstanding contributions to the field of constraint programming.

Please fill in this form by the end of 22 June 2025 AoE to nominate a candidate for the following awards (one nomination per form): forms.gle/V4eYuGKGSHjokpBw7

Google DocsConstraints Journal – Prominent and Classic Paper Awards 2025The Constraints journal is pleased to announce two awards for papers published in the journal: The Constraints Prominent Paper Award which recognizes outstanding papers published not more than 7 years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 2018 and 2024 (inclusive) for the 2025 Prominent Paper Award. The Constraints Classic Paper Award which recognizes outstanding papers published at least 15 calendar years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 1996 and 2010 (inclusive) for the 2025 Classic Paper Award. The publication year refers to the publication year of the issue in which the paper appeared. Evaluation Criteria Factors influencing the decision of the award include: Did the paper start a significant new line of research? Has the paper made a major theoretical advance? Has it heavily influenced other researchers (whether in or outside CP?) Has the paper influenced applications? Nomination Submission Nominations are welcome until the end of 22 June 2025, AoE. A nomination may come from anyone. Posthumous awards will be considered. All papers can be found online on the Springer webpage.
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3/6
 Prominent Paper Award
This award honours papers that are exceptional in both their significance and impact on the field of Constraint Programming, and that were published in Constraints between 2018 and 2024 (inclusive).
The publication year refers to the publication year of the issue in which the paper appeared.
#BestPaperAward#ConstraintProgramming#AI#CallForNominations#Optimization#SpringerPublishing#AcademicMastodon

Continued thread

2/6
The Constraints journal is seeking nominations for two awards that celebrate outstanding contributions to the field of constraint programming. Please fill in this form by the end of 31 May 2025 AoE to nominate a candidate for the following awards (one nomination per form): forms.gle/V4eYuGKGSHjokpBw7
#BestPaperAward#ConstraintProgramming#AI#CallForNominations#Optimization#SpringerPublishing#AcademicMastodon

Google DocsConstraints Journal – Prominent and Classic Paper Awards 2025The Constraints journal is pleased to announce two awards for papers published in the journal: The Constraints Prominent Paper Award which recognizes outstanding papers published not more than 7 years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 2018 and 2024 (inclusive) for the 2025 Prominent Paper Award. The Constraints Classic Paper Award which recognizes outstanding papers published at least 15 calendar years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 1996 and 2010 (inclusive) for the 2025 Classic Paper Award. The publication year refers to the publication year of the issue in which the paper appeared. Evaluation Criteria Factors influencing the decision of the award include: Did the paper start a significant new line of research? Has the paper made a major theoretical advance? Has it heavily influenced other researchers (whether in or outside CP?) Has the paper influenced applications? Nomination Submission Nominations are welcome until the end of 22 June 2025, AoE. A nomination may come from anyone. Posthumous awards will be considered. All papers can be found online on the Springer webpage.

I've just published a new Python module: github.com/Changaco/python-mem

It's an interesting little tool that tries to find all the Python objects in memory and compiles statistics on them.

Did you know that Python creates quite a few duplicate objects in memory? Tuples, bytes, strings, integers, frozen sets, floats. When loading the entire standard library, more than 32 thousand duplicate objects waste almost 2 megabytes of RAM.

A primer on Maximum Power Point Tracking solar charge controllers. This device goes between the solar panel and the battery and — not to put too fine a point on it — controls the charging of the battery to optimize power transfer from the solar panel (and, hopefully, maximize battery life I would assume).
I saw one mentioned in a YouTube video, likely sponsored, but if you have one that you are happy with, feel free to recommend.

electricaltechnology.org/2021/

ELECTRICAL TECHNOLOGY · MPPT Solar Charge Controller - Working, Sizing and SelectionWhat is Maximum Power Point Tracking (MMPT) Solar Charge Controller? Sizing an MPPT Solar Charger for Photovoltaic System with solved Example

Well… everything I have a keybind for in Qtile, and Qtile itself for that matter, has its own thread now.

Also, I am addicted to Rust now for the same reason.

I can almost guarantee you that my setup is way more responsive than anything you've ever seen on r/UnixPorn, and there's still absolutely no reason why I couldn't rice the hell out of it if I wanted to, I guess. I'm not going to, but I sure could, lol.

Seriously, though, this is why I use a tiling window manager: not because they look cool, but because they allow you to do weird things that save, by my estimate, objectively enough clock cycles that it actually feels faster subjectively. The things that fascinate me the most about Unix based operating systems is a mindset that is, for the most part, older than I am.

Or I would love to be wrong about that last part.

When you look at old-school Unix stuff like Grep, it was faster than it had any right to be, for the simple reason that it literally had to be. The hardware they were working with back then was capable of practically nothing by any standard that is even somewhat modern. I feel like no matter how good our hardware gets, the day that mentality becomes lost to history, is the day beyond which any hardware that could ever exist even in theory will never be enough.

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3/6

🏆** Prominent Paper Award**

This award honours papers that are exceptional in both their significance and impact on the field of Constraint Programming, and that were published in *Constraints* **between** **2018** **and** **2024** (inclusive).

The publication year refers to the publication year of the issue in which the paper appeared.

#BestPaperAward
#ConstraintProgramming
#AI
#CallForNominations
#Optimization
#SpringerPublishing
#AcademicMastodon

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6/6

**How to Nominate**

**Deadline: end of 31 May, 2025, AoE**
To nominate a paper, please fill in this form: forms.gle/V4eYuGKGSHjokpBw7

A nomination may come from anyone. Posthumous awards will be considered. All papers can be found online on the Springer webpage: link.springer.com/journal/1060

Help us recognise and celebrate the research that has shaped our field, and submit your nomination today!

#BestPaperAward
#ConstraintProgramming
#AI
#CallForNominations
#Optimization
#AcademicMastodon

Google DocsConstraints Journal – Prominent and Classic Paper Awards 2025The Constraints journal is pleased to announce two awards for papers published in the journal: The Constraints Prominent Paper Award which recognizes outstanding papers published not more than 7 years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 2018 and 2024 (inclusive) for the 2025 Prominent Paper Award. The Constraints Classic Paper Award which recognizes outstanding papers published at least 15 calendar years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 1996 and 2010 (inclusive) for the 2025 Classic Paper Award. The publication year refers to the publication year of the issue in which the paper appeared. Evaluation Criteria Factors influencing the decision of the award include: Did the paper start a significant new line of research? Has the paper made a major theoretical advance? Has it heavily influenced other researchers (whether in or outside CP?) Has the paper influenced applications? Nomination Submission Nominations are welcome until the end of 22 June 2025, AoE. A nomination may come from anyone. Posthumous awards will be considered. All papers can be found online on the Springer webpage.
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2/6

The *Constraints* journal is seeking nominations for two awards that celebrate outstanding contributions to the field of constraint programming. **Please fill in this form by the end of 31 May 2025 AoE** to nominate a candidate for the following awards (one nomination per form): forms.gle/V4eYuGKGSHjokpBw7

#BestPaperAward
#ConstraintProgramming
#AI
#CallForNominations
#Optimization
#SpringerPublishing
#AcademicMastodon

Google DocsConstraints Journal – Prominent and Classic Paper Awards 2025The Constraints journal is pleased to announce two awards for papers published in the journal: The Constraints Prominent Paper Award which recognizes outstanding papers published not more than 7 years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 2018 and 2024 (inclusive) for the 2025 Prominent Paper Award. The Constraints Classic Paper Award which recognizes outstanding papers published at least 15 calendar years ago in the Constraints journal that are exceptional in their significance and impact. Nominations are now solicited for papers published in Constraints between 1996 and 2010 (inclusive) for the 2025 Classic Paper Award. The publication year refers to the publication year of the issue in which the paper appeared. Evaluation Criteria Factors influencing the decision of the award include: Did the paper start a significant new line of research? Has the paper made a major theoretical advance? Has it heavily influenced other researchers (whether in or outside CP?) Has the paper influenced applications? Nomination Submission Nominations are welcome until the end of 22 June 2025, AoE. A nomination may come from anyone. Posthumous awards will be considered. All papers can be found online on the Springer webpage.