- The relationship among the layers is acyclic.
- The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules.
- The dependency structure between packages must be a directed acyclic graph (DAG). That is, there must be no cycles in the dependency structure.
- In many practical applications (for example, in AOV-network), it is necessary that graph G should be an acyclic graph.
- Markov network is an undirected graph, while Bayesian network is a directed acyclic graph.