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A greedy-navigator approach to navigable city plans
Stockholm University, Faculty of Social Sciences, Department of Sociology.
2013 (English)In: The European Physical Journal Special Topics, ISSN 1951-6355, E-ISSN 1951-6401, Vol. 215, no 1, 135-144 p.Article in journal (Refereed) Published
Abstract [en]

We use a set of four theoretical navigability indices for street maps to investigate the shape of the resulting street networks, if they are grown by optimizing these indices. The indices compare the performance of simulated navigators (having a partial information about the surroundings, like humans in many real situations) to the performance of optimally navigating individuals. We show that our simple greedy shortcut construction strategy generates the emerging structures that are different from real road network, but not inconceivable. The resulting city plans, for all navigation indices, share common qualitative properties such as the tendency for triangular blocks to appear, while the more quantitative features, such as degree distributions and clustering, are characteristically different depending on the type of metrics and routing strategies. We show that it is the type of metrics used which determines the overall shapes characterized by structural heterogeneity, but the routing schemes contribute to more subtle details of locality, which is more emphasized in case of unrestricted connections when the edge crossing is allowed.

Place, publisher, year, edition, pages
2013. Vol. 215, no 1, 135-144 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-88242DOI: 10.1140/epjst/e2013-01720-8ISI: 000314270300011OAI: oai:DiVA.org:su-88242DiVA: diva2:611343
Funder
Swedish Research Council
Note

AuthorCount:2;

Available from: 2013-03-15 Created: 2013-03-12 Last updated: 2017-12-06Bibliographically approved

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