| 11. | A rooted tree itself has been defined by some authors as a directed graph.
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| 12. | For example, they allow representation of a directed graph with trees on the nodes.
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| 13. | In the structural brain connectivity type, the connectivity is a sparse and directed graph.
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| 14. | These types include trees, forests, directed graphs with multiple parents, and directed acyclic graphs.
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| 15. | The converse is not true : most directed graphs are neither reflexive nor transitive.
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| 16. | A filter graph in multimedia processing is a directed graph.
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| 17. | In game theory, a "'game tree "'is a directed graph whose edges are moves.
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| 18. | It was studied on general directed graphs by Boldi and Vigna ( 2014 ).
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| 19. | The model represents a system as directed graph, where vertices are either subjects or objects.
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| 20. | An alternative representation of such a function is a directed graph called a reachability graph.
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