Day 10 of #AdventOfCode - part 2.
After struggling with constrOptim(), I broke down and loaded my first pkg this season. lpSolve is *so much* easier, and handles equality and int constraints. It was wild to revisit linear programming after many years.
Code on GH: github.com/ataustin/adv...
#RStats
After struggling with constrOptim(), I broke down and loaded my first pkg this season. lpSolve is *so much* easier, and handles equality and int constraints. It was wild to revisit linear programming after many years.
Code on GH: github.com/ataustin/adv...
#RStats
ah frig, it's constrained optimization isn't it
December 30, 2025 at 7:01 PM
Day 10 of #AdventOfCode - part 2.
After struggling with constrOptim(), I broke down and loaded my first pkg this season. lpSolve is *so much* easier, and handles equality and int constraints. It was wild to revisit linear programming after many years.
Code on GH: github.com/ataustin/adv...
#RStats
After struggling with constrOptim(), I broke down and loaded my first pkg this season. lpSolve is *so much* easier, and handles equality and int constraints. It was wild to revisit linear programming after many years.
Code on GH: github.com/ataustin/adv...
#RStats
Suspect lm() is enough for most of them, but yeah I used lpSolve.
December 11, 2025 at 3:00 AM
Suspect lm() is enough for most of them, but yeah I used lpSolve.
hilariously I actually meant lpsolve. I don't think I knew that R had a built in systems of equations solver. I'm going to play around with that
December 13, 2024 at 6:52 PM
hilariously I actually meant lpsolve. I don't think I knew that R had a built in systems of equations solver. I'm going to play around with that
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
I used lpSolve (cran.r-project.org/web/packages...) to solve this #RStats #IntegerLinearProgramming
I used lpSolve (cran.r-project.org/web/packages...) to solve this #RStats #IntegerLinearProgramming
Day 10 - Advent of Code 2025
adventofcode.com
December 24, 2025 at 12:17 AM
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
I used lpSolve (cran.r-project.org/web/packages...) to solve this #RStats #IntegerLinearProgramming
I used lpSolve (cran.r-project.org/web/packages...) to solve this #RStats #IntegerLinearProgramming
crates.io also has another crate that might be of interest, it is called good_lp. It is an interface for a range of different solves, including cbc, highs, lpsolve, microlp, gurobi, cplex, glpk, scip, and clarabel.
March 5, 2025 at 8:48 PM
crates.io also has another crate that might be of interest, it is called good_lp. It is an interface for a range of different solves, including cbc, highs, lpsolve, microlp, gurobi, cplex, glpk, scip, and clarabel.
Actually, the fast easy solution seems to be using the package library(lpSolve) to find how many matrix rows you need to add together to match a goal vector. Another star ticked off.
December 11, 2025 at 2:56 AM
Actually, the fast easy solution seems to be using the package library(lpSolve) to find how many matrix rows you need to add together to match a goal vector. Another star ticked off.
J'ai découvert le R package lpsolve 🤐 avec mon code pas du tt optimisé & en faisant un décalage car les indices débutent à 1 sur R. + qu'un jour & 2 ⭐, je découvre plein de choses, c'est chouette.
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
Day 10 - Advent of Code 2025
adventofcode.com
December 28, 2025 at 12:03 PM
J'ai découvert le R package lpsolve 🤐 avec mon code pas du tt optimisé & en faisant un décalage car les indices débutent à 1 sur R. + qu'un jour & 2 ⭐, je découvre plein de choses, c'est chouette.
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
##algorithmdevelopment#bestdistributionplan #complexdecisionmakingproblems #CPLEX #dataanalysis #dataanalysisandoptimization #Gurobi #LINDO #linearprogrammingproblems #LINGO #lpSolve #mathematicalmodeling #mathematicalmodels #MATLAB #MicrosoftExcel
www.entrepreneursjoint.com/or-tools-and...
www.entrepreneursjoint.com/or-tools-and...
Tools and Software Used in Operations Research (OR)
OR is a fascinating field that blends math, data, and decision-making. Here are popular tools and software used in OR, explained in a simple and friendly way.
www.entrepreneursjoint.com
January 18, 2025 at 10:58 PM
CRAN updates: abind antaresRead archive betareg eodhdR2 esci FeatureExtraction formatters ichimoku intRinsic LocalCop lpSolve pcalg pkgcache pkgdepends ps SSplots #rstats
September 12, 2024 at 6:02 PM
CRAN updates: abind antaresRead archive betareg eodhdR2 esci FeatureExtraction formatters ichimoku intRinsic LocalCop lpSolve pcalg pkgcache pkgdepends ps SSplots #rstats
Updates on CRAN: COMMA (1.1.1), gsheet (0.4.6), joyn (0.2.4), loa (0.3.0.1), lpSolve (5.6.23), shiny (1.10.0), surveydown (0.7.2)
December 14, 2024 at 2:24 AM
Updates on CRAN: COMMA (1.1.1), gsheet (0.4.6), joyn (0.2.4), loa (0.3.0.1), lpSolve (5.6.23), shiny (1.10.0), surveydown (0.7.2)
Updates on CRAN: finnsurveytext (2.1.0), flowchart (0.6.0), knitr (1.49), lpSolve (5.6.22), minty (0.0.4), mlr3filters (0.8.1), model4you (0.9-8), movieROC (0.1.2)
November 8, 2024 at 1:23 PM
Updates on CRAN: finnsurveytext (2.1.0), flowchart (0.6.0), knitr (1.49), lpSolve (5.6.22), minty (0.0.4), mlr3filters (0.8.1), model4you (0.9-8), movieROC (0.1.2)
Updates on CRAN: intRinsic (1.1.0), LocalCop (0.0.2), lpSolve (5.6.21), maldipickr (1.3.1), naaccr (3.0.1), pcalg (2.7-12), pkgcache (2.2.3), pkgdepends (0.8.0), ps (1.8.0), SSplots (0.1.2), trekcolors (0.2.0), vglmer (1.0.5)
September 12, 2024 at 9:16 PM
Updates on CRAN: intRinsic (1.1.0), LocalCop (0.0.2), lpSolve (5.6.21), maldipickr (1.3.1), naaccr (3.0.1), pcalg (2.7-12), pkgcache (2.2.3), pkgdepends (0.8.0), ps (1.8.0), SSplots (0.1.2), trekcolors (0.2.0), vglmer (1.0.5)
有益な記事ありがとうございます。“Code for the Earth Movers Distance (EMD) ”はヘッダファイルを少し手直しすることでMSYSのgccでコンパイルできました。 / htn.to/3iP26PVFpi
Earth Mover's Distance（２）lpSolveを使ったＣ実装 - "Truth of the Legend" Notes
Earth Mover's Distance (2)EMD with lpSolve 2021/03/11 藤田昭人 だいぶん間が空いてしまいましたが… 実は Earth Mover's Distance の実装を巡って悪戦苦闘してました。 その顛末をダラダラを書き連ねた記事が予想外に長くなってしまったので、 要点のみをピックアップして再構成したものが本稿です。 今日 Earth Mover's ...
htn.to
November 30, 2024 at 5:34 AM
有益な記事ありがとうございます。“Code for the Earth Movers Distance (EMD) ”はヘッダファイルを少し手直しすることでMSYSのgccでコンパイルできました。 / htn.to/3iP26PVFpi
libqxp, libstaroffice, libtommath, libwps, lpsolve, mythes, valgrind, ucpp, libetonyek [also needs glm and liblangtag], xmlsec, avahi*) after the main deps libfreehand, liblangtag, libmspub, libzmf (and with DOC=yes for everything), plus hunspell-en; but i'll try binary pkg libreoffice first.
October 29, 2025 at 9:22 PM
libqxp, libstaroffice, libtommath, libwps, lpsolve, mythes, valgrind, ucpp, libetonyek [also needs glm and liblangtag], xmlsec, avahi*) after the main deps libfreehand, liblangtag, libmspub, libzmf (and with DOC=yes for everything), plus hunspell-en; but i'll try binary pkg libreoffice first.
Nice, mine is basically the same but using xor() and 0/1 instead. I did every possible combination then minimised rather than building up.
For part 2 I used lpSolve but I suspect could just use lm() with a bit of care in the few cases with multiple solutions.
For part 2 I used lpSolve but I suspect could just use lm() with a bit of care in the few cases with multiple solutions.
December 11, 2025 at 1:27 AM
Nice, mine is basically the same but using xor() and 0/1 instead. I did every possible combination then minimised rather than building up.
For part 2 I used lpSolve but I suspect could just use lm() with a bit of care in the few cases with multiple solutions.
For part 2 I used lpSolve but I suspect could just use lm() with a bit of care in the few cases with multiple solutions.