dorsal/arxiv
View SchemaSelf-Organized Criticality, Optimization and Biodiversity
| Authors | Roberto N. Onody, Paulo A. de Castro |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0410007 |
| URL | https://arxiv.org/abs/q-bio/0410007 |
| Journal | International Journal of Modern Physics C 14, 911-916 (2002) |
Abstract
By driven to extinction species less or poorly adapted, the Darwinian evolutionary theory is intrinsically an optimization theory. We investigate two optimization algorithms with such evolutionary characteristics: the Bak-Sneppen and the Extremal Optimization. By comparing their mean fitness in the steady state regime, we conclude that the Bak-Sneppen dynamics is more efficient than the Extremal Optimization if the parameter $\tau$ is in the interval $[0,0.86]$. The determination of the spatial correlation and the probability distribution of the avalanches show that the Extremal Optimization dynamics does not lead the system into a critical self-organized state. Trough a discrete form of the Bak-Sneppen model we argument that biodiversity is an essential requisite to preserve the self-organized criticality.
{
"annotation_id": "188f8ddd-4c38-4de2-94fe-6b7793db5fe6",
"date_created": "2026-03-02T18:01:31.487000Z",
"date_modified": "2026-03-02T18:01:31.487000Z",
"file_hash": "5aa7416c071bd3304b7207dbf3e0c3ac522892a72a2274d425156dc7a3c251fc",
"private": false,
"record": {
"abstract": "By driven to extinction species less or poorly adapted, the Darwinian\nevolutionary theory is intrinsically an optimization theory. We investigate two\noptimization algorithms with such evolutionary characteristics: the Bak-Sneppen\nand the Extremal Optimization. By comparing their mean fitness in the steady\nstate regime, we conclude that the Bak-Sneppen dynamics is more efficient than\nthe Extremal Optimization if the parameter $\\tau$ is in the interval\n$[0,0.86]$. The determination of the spatial correlation and the probability\ndistribution of the avalanches show that the Extremal Optimization dynamics\ndoes not lead the system into a critical self-organized state. Trough a\ndiscrete form of the Bak-Sneppen model we argument that biodiversity is an\nessential requisite to preserve the self-organized criticality.",
"arxiv_id": "q-bio/0410007",
"authors": [
"Roberto N. Onody",
"Paulo A. de Castro"
],
"categories": [
"q-bio.PE"
],
"journal_ref": "International Journal of Modern Physics C 14, 911-916 (2002)",
"title": "Self-Organized Criticality, Optimization and Biodiversity",
"url": "https://arxiv.org/abs/q-bio/0410007"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "2e7908d4-e135-4323-ab44-ebf372075df8",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}