mathematics, particularly graph theory, and computer science, a directed acyclic graph (DAG) is a directed graph with no directed cycles. That is, it consists...
45 KB (5,646 words) - 20:41, 12 May 2025
any directed cycle and therefore makes it into a directed acyclic graph. Every graph has an acyclic orientation. The chromatic number of any graph equals...
9 KB (1,081 words) - 19:18, 2 November 2024
more specifically in graph theory, a directed graph (or digraph) is a graph that is made up of a set of vertices connected by directed edges, often called...
16 KB (1,937 words) - 05:02, 12 April 2025
takes the form of a directed acyclic graph with a single source vertex (a vertex with no incoming edges), in which each edge of the graph is labeled by a...
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Hypergraph (redirect from Hypergraph acyclicity)
since it is not transitive. The graph corresponding to the Levi graph of this generalization is a directed acyclic graph. Consider, for example, the generalized...
51 KB (6,817 words) - 12:47, 18 May 2025
trees. A directed tree, oriented tree, polytree, or singly connected network is a directed acyclic graph (DAG) whose underlying undirected graph is a tree...
27 KB (3,383 words) - 16:48, 14 March 2025
Acyclic graph may refer to: Directed acyclic graph, a directed graph without any directed cycles Forest (graph theory), an undirected acyclic graph Polytree...
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acyclic graph. A directed graph without directed cycles is called a directed acyclic graph. A connected graph without cycles is called a tree. A circuit...
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Feedback arc set (redirect from Maximum acyclic subgraph)
the graph. Removing these edges from the graph breaks all of the cycles, producing an acyclic subgraph of the given graph, often called a directed acyclic...
54 KB (6,130 words) - 06:48, 12 May 2025
A propositional directed acyclic graph (PDAG) is a data structure that is used to represent a Boolean function. A Boolean function can be represented as...
3 KB (384 words) - 05:37, 24 March 2025
Directed acyclic word graph (DAWG) may refer to two related, but distinct, automata constructions in computer science: Deterministic acyclic finite state...
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thing as a forest. An acyclic directed graph, which is a digraph without directed cycles, is often called a directed acyclic graph, especially in computer...
109 KB (16,011 words) - 18:32, 30 April 2025
Lowest common ancestor (category Trees (graph theory))
called least common ancestor) of two nodes v and w in a tree or directed acyclic graph (DAG) T is the lowest (i.e. deepest) node that has both v and w as descendants...
24 KB (2,991 words) - 12:38, 19 April 2025
In graph theory, a moral graph is used to find the equivalent undirected form of a directed acyclic graph. It is a key step of the junction tree algorithm...
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construction of a layered graph drawing proceeds in a sequence of steps: If the input graph is not already a directed acyclic graph, a set of edges is identified...
20 KB (2,239 words) - 17:48, 29 November 2024
Transitive reduction (category Graph theory)
possible among all graphs with that property. The transitive reduction of a finite directed acyclic graph (a directed graph without directed cycles) is unique...
16 KB (2,279 words) - 19:58, 12 October 2024
that takes the form of a directed acyclic graph. Ancestral graphs are mixed graphs used with three kinds of edges: directed edges, drawn as an arrow from...
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Polytree (redirect from Directed tree)
specifically in graph theory, a polytree (also called directed tree, oriented tree or singly connected network) is a directed acyclic graph whose underlying...
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Longest path problem (category Graph algorithms)
Longest paths of directed acyclic graphs may also be applied in layered graph drawing: assigning each vertex v of a directed acyclic graph G to the layer...
22 KB (2,662 words) - 06:47, 12 May 2025
A graph without a cycle, especially A directed acyclic graph An acyclic complex is a chain complex all of whose homology groups are zero An acyclic space...
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graph. A directed graph is called an oriented graph if none of its pairs of vertices is linked by two mutually symmetric edges. Among directed graphs, the...
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which handled only directed acyclic graphs. At its simplest, DOT can be used to describe an undirected graph. An undirected graph shows simple relations...
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List of data structures (redirect from Graph-based data structures)
Zero-suppressed decision diagram And-inverter graph Directed graph Directed acyclic graph Propositional directed acyclic graph Multigraph Hypergraph Lightmap Winged...
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other equivalent characterizations exist. Every arborescence is a directed acyclic graph (DAG), but not every DAG is an arborescence. The term arborescence...
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Strongly connected component (redirect from Strongly connected graph)
a single vertex, the resulting graph is a directed acyclic graph, the condensation of G. A directed graph is acyclic if and only if it has no strongly...
13 KB (1,639 words) - 04:26, 19 May 2025
(or directed forest or oriented forest) is a directed acyclic graph whose underlying undirected graph is a forest. More advanced kinds of graphs are:...
28 KB (3,671 words) - 04:30, 15 May 2025
f_{AB},f_{AC},f_{AD}} . If the network structure of the model is a directed acyclic graph, the model represents a factorization of the joint probability of...
11 KB (1,278 words) - 04:58, 15 April 2025
Topological sorting (category Directed acyclic graphs)
ordering is possible if and only if the graph has no directed cycles, that is, if it is a directed acyclic graph (DAG). Any DAG has at least one topological...
23 KB (3,170 words) - 01:52, 12 February 2025
Maximum flow problem (category Computational problems in graph theory)
have flow 1 {\displaystyle 1} in an integral max-flow. Given a directed acyclic graph G = ( V , E ) {\displaystyle G=(V,E)} , we are to find the minimum...
42 KB (5,227 words) - 18:08, 27 October 2024
st-planar graph can reach another in constant time per query. Rotating such a drawing by 45° gives an upward planar drawing of the graph. A directed acyclic graph...
4 KB (599 words) - 07:56, 18 August 2023