# \#abm **URL:** https://discourse.julialang.org/tag/abm/1358.md [Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md) --- ## [BeforeIT.jl - High-Performance Agent-Based Macroeconomics in Julia](https://discourse.julialang.org/t/beforeit-jl-high-performance-agent-based-macroeconomics-in-julia/126984)
**Author:** [@Tortar](https://discourse.julialang.org/u/Tortar)\ **Replies:** 9\ **Last updated:** [March 27, 2025, 9:33am UTC](https://discourse.julialang.org/t/beforeit-jl-high-performance-agent-based-macroeconomics-in-julia/126984 "2025-03-27T09:33:02Z")
Hi all, I’d like to announce BeforeIT.jl, a Julia package for macroeconomic agent based modelling based on a recent and very well known model. The package is particularly performant in respect to other implementations w… --- ## [Solid boundary for ABM model](https://discourse.julialang.org/t/solid-boundary-for-abm-model/113984)
**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\ **Replies:** 28\ **Last updated:** [December 10, 2024, 1:18pm UTC](https://discourse.julialang.org/t/solid-boundary-for-abm-model/113984 "2024-12-10T13:18:07Z")
Hello everyone, I’m building a model where particles roam around randomly in 3d space. At the moment issue is that I want particles to be contained in space though what I see is that it escapes boundary and comes on the… --- ## [ABM Agents.jl model properties as a nested dictionary](https://discourse.julialang.org/t/abm-agents-jl-model-properties-as-a-nested-dictionary/123110)
**Author:** [@elisadonati23](https://discourse.julialang.org/u/elisadonati23)\ **Replies:** 3\ **Last updated:** [November 29, 2024, 1:22pm UTC](https://discourse.julialang.org/t/abm-agents-jl-model-properties-as-a-nested-dictionary/123110 "2024-11-29T13:22:28Z")
Dear Julia and the Agents.jl community, I’m currently working on a multispecies agent-based model (ABM) with sardine and anchovy superindividuals, and I’m planning to transition to the multi-agent framework soon. My mod… --- ## [\[ANN\] Vahana.jl - Framework for large-scale agent-based models](https://discourse.julialang.org/t/ann-vahana-jl-framework-for-large-scale-agent-based-models/102024)
**Author:** [@sfuerst](https://discourse.julialang.org/u/sfuerst)\ **Replies:** 19\ **Last updated:** [November 18, 2024, 7:46pm UTC](https://discourse.julialang.org/t/ann-vahana-jl-framework-for-large-scale-agent-based-models/102024 "2024-11-18T19:46:36Z")
I’m happy to announce the release of Vahana.jl, a framework for (not only) large-scale agent-based models with a focus on complex social networks. There will also be a prerecorded talk at JuliaCon tomorrow. The reposit… --- ## [Issue in collision count for a ball in 2d space using agent.jl](https://discourse.julialang.org/t/issue-in-collision-count-for-a-ball-in-2d-space-using-agent-jl/122488)
**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\ **Replies:** 3\ **Last updated:** [November 18, 2024, 11:09am UTC](https://discourse.julialang.org/t/issue-in-collision-count-for-a-ball-in-2d-space-using-agent-jl/122488 "2024-11-18T11:09:36Z")
Hello everyone, I have made a MWE for collision problem (2d example) in Agent Based model this based on some of my previous questions. Im using interacting\_pairs to find pairs in model and count collision if it finds an… --- ## [Julia ❤️ ABM tutorial series](https://discourse.julialang.org/t/julia-abm-tutorial-series/99300)
**Author:** [@fbanning](https://discourse.julialang.org/u/fbanning)\ **Replies:** 1\ **Last updated:** [November 17, 2024, 5:23pm UTC](https://discourse.julialang.org/t/julia-abm-tutorial-series/99300 "2024-11-17T17:23:37Z")
Julia :heart: ABM is a tutorial series on coding agent-based models in Julia. I write on it in irregular intervals - basically whenever I find some time to extend on it. List of issues so far: Julia :heart: ABM #0: Ag… --- ## [Why is \`getindex\` slower the second time in a vector of vectors?](https://discourse.julialang.org/t/why-is-getindex-slower-the-second-time-in-a-vector-of-vectors/113819)
**Author:** [@alex180500](https://discourse.julialang.org/u/alex180500)\ **Replies:** 7\ **Last updated:** [May 5, 2024, 1:56pm UTC](https://discourse.julialang.org/t/why-is-getindex-slower-the-second-time-in-a-vector-of-vectors/113819 "2024-05-05T13:56:15Z")
Why is in this function calling the getindex method the second time slower? This function (the smallest working example I could make) is a snippet of a bigger project I’m making on agent based models where I choose a ra… --- ## [Agent Based Modelling for cellular interaction](https://discourse.julialang.org/t/agent-based-modelling-for-cellular-interaction/113732)
**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\ **Replies:** 0\ **Last updated:** [May 2, 2024, 12:06pm UTC](https://discourse.julialang.org/t/agent-based-modelling-for-cellular-interaction/113732 "2024-05-02T12:06:49Z")
Hello everyone, Im trying to make a simple interaction model for cellular system. Let’s say we have 3 cells of two types A and B and when they come in contact they produce chemical x. Though there is much more I need t… --- ## [Performance issue: Axelrod model of dissemination of culture optimization](https://discourse.julialang.org/t/performance-issue-axelrod-model-of-dissemination-of-culture-optimization/113326)
**Author:** [@alex180500](https://discourse.julialang.org/u/alex180500)\ **Replies:** 6\ **Last updated:** [April 22, 2024, 1:30pm UTC](https://discourse.julialang.org/t/performance-issue-axelrod-model-of-dissemination-of-culture-optimization/113326 "2024-04-22T13:30:40Z")
Hello! I’m implementing an Agent Based Model (axelrod model of dissemination of culture). Every node has an associated vector of “opinions” (data) on different subjects (number of features is feat). Each step two nodes a…