island-ga SKILL.md skillA
island-ga from optima-cityu/llm4ad_next is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add optima-cityu/llm4ad_next/island-ga@git:20260908.f40b41bPins git:20260908.f40b41b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- optima-cityu/llm4ad_next
- Path
skills/algo-design/island-ga/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260908.f40b41b, committed Sep 8, 2026
- Size
- 3,306 bytes
- Repository stars
- 674
- License
- BSD-3-Clause
Island Genetic Algorithm (IslandGA) method skill. USE WHEN the user explicitly requests IslandGA / island genetic algorithm, or wants multiple sub-populations evolving in parallel with periodic inter-island migration to preserve diversity and enable parallel search.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Island Genetic Algorithm (IslandGA) Skill > **Reference**: Classic distributed evolutionary computation model, widely used for parallel evolutionary search. Independent sub-populations (islands) evolve in parallel with periodic migration. ## 1. Method Essence IslandGA runs a **distributed evolutionary algorithm** in which the population is divided into several independent **islands** (sub-populations). Each island evolves on its own — with independent selection, crossover, and mutation — and only exchanges individuals through **periodic migration events**. This decoupled structure preserves genetic diversity (each island drifts toward different optima) and enables **parallel execution** of evolution workloads. Core mechanisms: | Concept | Role | |---|---| | **Island** | An independent sub-population evolving on its own GA loop | | **Migration** | Periodic exchange of individuals between islands to spread good solutions | | **Migration interval** | Number of generations between inter-island migration events | | **Migration rate** | Fraction of individuals migrated out of the source island each event | …
Read the whole file at its exact version.
How to install
mdr add optima-cityu/llm4ad_next/island-ga@sha256:10695436027d61c5The line at the top of this page pins the label git:20260908.f40b41b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_fr4d7yfotkpidnxc)
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Versions
The registry has recorded 1 version of this file, committed on Sep 8, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3306 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
optima-cityu/llm4ad_next · 674 stars · license BSD-3-Clause · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fr4d7yfotkpidnxc GET https://markdownregistry.com/api/v1/resolve?ref=optima-cityu/llm4ad_next/island-ga GET https://markdownregistry.com/api/v1/blob/10695436027d61c5a0dd85de1f86d62a383fd2132721a4b5a2e6c1d306d44061
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.