German stocks near record highs — but will a Wall Street comeback spoil the party?
The German DAX index has surged 19% so far this year. #German #stocks #record #highs #Wall #Street #comeback #spoil #party
#HIGHS
Highs And Lows Of The Portland Trail Blazers’ Season https://www.rawchili.com/nba/22098/ #and #Basketball #blazer #blazers #edge #FrontPage #highs #lows #NBA #of #Portland #PortlandTrailBlazers #PortlandTrailBlazers #s #season #the #Trail #TrailBlazers #TrailBlazersAnalysis
You can't be 100% all the time: there can not be #Highs without #Lows
#Life is a #Battlefield with Narghiza Ergashova
Happy #Wednesday afternoon from the #Northland!
It's a #colder day in the region with #highs in the teens and 20s. At least the #winds are calming down.
Enjoy the #sunshine and #dry conditions. More #snow #showers pass through overnight.
Article: Can AI code an entire optimization model?
In this article we pursue an ambitious goal: Create an entire, non-trivial optimization model using Artificial Intelligence (AI).
Our approach mimics a user who is familiar with the situation, and has some experience with formulating optimization models, but is not familiar with implementing an optimization model in Python code. We want the AI to do all the coding for us.
We report our experience of using Copilot to write a model for us. Rather than presenting a verbatim transcript, which is very long, we focus on what went well and what didn't go well as the model evolves. We also summarize general lessons from the process.
https://www.solvermax.com/blog/can-ai-code-an-entire-optimization-model
Article: Objectives matter: Sorting using a MIP model
We replicate a model by Erwin Kalvelagen at Yet Another Math Programming Consultant (YAMPC), "Sorting using a MIP model".
In this article, we assess the impact of using an alternative objective function in the same model. The idea is to give the HiGHS solver greater traction while working through the solution space, hopefully helping it to solve the model faster. We've found this technique to be useful for some other models – will it help in this situation?
https://www.solvermax.com/blog/objectives-matter-sorting-using-a-mip-model
#Python #orms #optimization #modelling #CPLEX #highs
I did a thing where I flung myself out of the house and hit the sauna prior to a breakfast outing.
I tested my Automated Autustic Systems Series Highlighting Only Lien Elements on fire routine.
Aasshole on fire for short. ;-D
Anyways, this means I rely ONLY on predefined preset items to go out the door.
Bag was not prepacked with towels, still that said, including driving to the facility, I was in steam from conception of leaving my bedroom (was still in jams) -in 21 minutes.
#audhd #highs
Article: Gerrymandering made easy
In this article, we take a simple approach to modifying a redistricting design. We add a requirement to our model that could be interpreted as either:
- The laudable goal of grouping together "communities of interest" – a common requirement when designing voting districts; or
- A nefarious attempt to manipulate the electoral outcome by gerrymandering.
Gerrymandering is the opposite of the model's purpose in our previous article. But, as model designers, we need to be aware that we don't always control the purposes to which decision makers apply our models and decision makers don't always understand the implications of small changes to a model.
https://www.solvermax.com/blog/gerrymandering-made-easy
#Python #orms #optimization #modelling #gurobi #highs
@AustinLBuchanan
Article: Academics, please publish your data and code
Academic research papers can be a valuable source of material for creating and improving real world optimization models. But we wish that academics would publish working code and data to accompany their papers.
In this article:
- Firstly, we briefly look at some reasons why academics might be reluctant to publish their data and code.
- Then we replicate, modify, and explore a published model that has been done well, with the data and program code publicly available.
https://www.solvermax.com/blog/academics-please-publish-your-data-and-code
#Python #orms #optimization #modelling #gurobi #highs
@AustinLBuchanan
Article: Well, that escalated quickly: Pyomo
We conclude our series of articles to decide the best order for positioning devices in a rack.
This article discusses Model 5, which formulates the situation in Pyomo as a Mixed Integer Linear Program (MILP). We solve the model using a single instance of Gurobi and parallel instances of the HiGHS solver.
Does this model perform better than the previous methods?
https://www.solvermax.com/blog/well-that-escalated-quickly-pyomo
#Python #orms #optimization #modelling #gurobi #highs
Along with Baker rising to an all-time record high of 109° today, we've had four record-warm lows in Billings (73°), Livingston (68°), Miles City (79°) and Sheridan, WY (70°)! The 79° low in Miles City likely tied its all-time record warm low, too!
#Montana #Billings #Q2 #KTVQ #MTN #Wyoming #warmth #heat #sun #smoke #highs #lows #recordhigh #recordlow #Wednesday #weather #wx #mtwx #wywx
Как мы в 2 раза ускорили решение MILP-проблем за счет ML
Многие задачи, с которыми мы имеем дело при цифровизации производства (неважно какого), – это задачи оптимизации: оптимизация производственного расписания, оптимизация цепочек поставок и размещения объектов, оптимизационное планирование и прочее. Многие из них сводятся к проблемам смешанного линейно-целочисленного типа (MILP – Mixed Integer Linear Problem). Конечно же мы хотим их решать быстрее и эффективнее, поэтому год назад начали разработку ML-модулей для этого. В этой статье мы познакомим вас с концептом одного такого модуля – для упрощения MILP методом обнуления переменных – и расскажем о том, насколько нам удалось с его помощью сократить время работы решателя.
https://habr.com/ru/companies/zyfra/articles/810965/
#MILP #ml #operations_research #blending_models #optimizaiton #решатель #оптимизация #mip #scip #highs
#Meanwhile...
My #RomanCatholicMother (#StillGoingStrong into her 80s) reports a #Heatwave at the #AprilFair in #Sevilla... #Highs of up to 40-Centigrade... In #April... #HotHotHot...
🧙:fediverse:🤖:wolfparty:🤖:fediverse:🧙 | ⚛️🦹🔥🦄🔥🦹⚛️
Article: 10 times faster, running cases in parallel
In this article, we explore running optimization model cases in parallel. Specifically, we use the Python multiprocessing and mpi4py libraries to fully use the many CPU cores/threads in modern computers.
Our goals are to:
- Illustrate how to apply the multiprocessing and mpi4py libraries to running optimization model cases in parallel.
- Measure the performance of running cases in parallel compared with serially.
- Compare the performance of an old 4 core / 4 thread CPU with a new 20 core / 28 thread CPU, using the HiGHS solver.
https://www.solvermax.com/blog/10-times-faster-running-cases-in-parallel
#Python #pyomo #orms #optimization #modelling #HiGHS #multiprocessing #mpi4py
Warehouse space for free: Exogenous enumeration
In this article series, we look at improving the efficiency of a pallet warehouse, where all items are stored on standard-size pallets.
In part 3 of 3, we make some variables exogenous and enumerate all of their combinations. The goal is to make the model solvable at full scale in a reasonable time.
The result is a 200 times improvement in model performance, leading to a 40% improvement in warehouse storage efficiency.
The model is built in Python using Pyomo, and solved with either the Gurobi or HiGHS solvers.
https://www.solvermax.com/blog/warehouse-space-for-free-exogenous-enumeration
#Python #pyomo #orms #optimization #modelling #Gurobi #HiGHS
Warehouse space for free: Linearized model
In this article series, we look at improving the efficiency of a pallet warehouse, where all items are stored on standard-size pallets.
In part 2 we linearize our model to, hopefully, make it easier to solve.
The model is built in Python using Pyomo.
https://www.solvermax.com/blog/warehouse-space-for-free-linearized-model
#Python #pyomo #orms #optimization #modelling #Gurobi #HiGHS
Happy #Monday afternoon from the #Northland!
The last of any #snow #showers are moving out of the region, so enjoy the #sunshine and southerly #breeze this afternoon.
Those who have avoided the snow may see new #record #highs for the day as #temperatures #warm to the 50s.
NORTHLAND FORECAST FOR FEBRUARY 26, 2024:
A #warm #front will pass over the #Northland Sunday night, bringing #snow #showers and a couple inches for the northern half of the region. Lows will be in the upper teens and 20s.
#Sunshine returns by Monday afternoon. A strong southerly #breeze will warm #temperatures to the upper 40s and 50s, challenging #record #highs for the day.
VIDEO: https://www.fox21online.com/2024/02/25/sunday-evening-northland-forecast-2-25-2024/
Happy #Thursday afternoon from the #Northland!
There is plenty of #sunshine, helping to warm the region to the 40s and 50s. A few #record #highs could be challenged.
A #cold #front passes through tonight, bringing a few #snow #showers and a brief return of seasonal #temperatures.
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