Hierarchical organization in complex networks
Open accessAbstract
Many real networks in nature and society share two generic properties: they are scale-free and they display a high degree of clustering. We show that these two features are the consequence of a hierarchical organization, implying that small groups of nodes organize in a hierarchical manner into increasingly large groups, while maintaining a scale-free topology. In hierarchical networks, the degree of clustering characterizing the different groups follows a strict scaling law, which can be used to identify the presence of a hierarchical organization in real networks. We find that several real networks, such as the Worldwideweb, actor network, the Internet at the domain level, and the semantic web obey this scaling law, indicating that hierarchy is a fundamental characteristic of many complex systems.
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The existence of power-law distributions in datasets can often be traced back to hierarchical structures.
“the existence of power-law distributions in datasets can often be traced back to hierarchical structures [25]”
From Poincaré Embeddings for Learning Hierarchical Representations (2017) · cites this paper as [25]
The paper’s opening section (p. 1) says that the scale-free properties of several real networks are a consequence of hierarchical organization, and its hierarchical model has a power-law degree distribution (Section I, p. 2). The claim extends that finding from network degree distributions to power-law distributions in datasets generally, which the paper does not establish. (LLM, conf=0.84)
Experimental — accuracy not yet measuredMany complex symbolic datasets exhibit a latent hierarchical structure.
“complex symbolic datasets often exhibit a latent hierarchical structure”
From Poincaré Embeddings for Learning Hierarchical Representations (2017) · cites this paper as [25]
The paper reports hierarchical organization in several complex networks, including a language network linking synonymous words (Section II, p. 3). This supports the possibility of latent hierarchy in symbolic data, but it does not establish that complex symbolic datasets in general often exhibit it. (LLM, conf=0.84)
Experimental — accuracy not yet measured
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- Authors
- Ravasz, E., & Barabási, A.-L.
- Venue
- Physical Review E
- Publisher
- American Physical Society (APS)
- Published
- 2003-02-14
- Volume
- 67
- Issue
- 2
- Pages
- 026112-026112
- ISSN
- 1063-651X (ISSN-L)
- 1095-3787
- OpenAlex
- W2018049970
- Cited by
- 2,160
- References
- 2
- Citations by year
- 2026: 38 · 2025: 61 · 2024: 62 · 2023: 58 · 2022: 104 · 2021: 147 · 2020: 109 · 2019: 102 · 2018: 117 · 2017: 115 · 2016: 90 · 2015: 102 · 2014: 95 · 2013: 112 · 2012: 103
- FWCI
- 48.10
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Digital Repository Service (Northeastern University) (submittedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Complex Systems and Time Series Analysis
- Physical Sciences › Mathematics › Geometry and Topology › Graph theory and applications
- Keywords
- hierarchy, complex networks, scale-free networks, clustering coefficient, scaling laws, network topology, World Wide Web, actor networks, semantic web, community structure
- MeSH terms
- Models, Theoretical, Social Support, Stochastic Processes, Cluster Analysis, Internet
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