网络有向无环图;定向无环图;有向非循环图
These directed graphs are called directed acyclic graph (DAG) and balanced directed graph (BDG), respectively. Both analytical and simulation results show that type I excitatory and inhibitory neurons are synchronized in directed acyclic networks (i.e. networks without any feedback loops). However,...
Directed acyclic graphs (DAGs) are nonparametric graphical tools used to depict causal relations in the epidemiologic assessment of exposure-outcome associations. Although their use in dental research was first advocated in 2002, DAGs have yet to be widely adopted in this field. DAGs help identify ...
In the past decade, causal directed acyclic graphs (DAGs), also called causal diagrams, have been increasingly used to determine confounding variables that must be controlled in order to estimate an unbiased effect between an exposure, an intervention, or a treatment on an outcome. We explain the...
Directed acyclic graphs (DAGs), or causal diagrams, are graphical representations of causal structures that can be used in medical research to understand and illustrate potential bias, including bias arising from confounding, selection, and misclassification. Further, they provide guidance for researchers...
Signed directed acyclic graphs for causal inference Summary. Formal rules governing signed edges on causal directed acyclic graphs are described and it is shown how these rules can be useful in reasoning abo... TJ Vanderweele,JM Robins - 《Journal of the Royal Statistical Society》 被引量: 80发...
In order to support the ability to push and pull changesets between multiple instances of the same repository, we need a specially designed structure for representing multiple versions of things. The structure we use is called a Directed Acyclic Graph (DAG), a design which is more expressive th...
Directed acyclic graphs are pictures (illustrations) for representing conditional independence as given by the recursive decomposition: n Pr(v 1, v 2 …v n-1, v n ) = Pr( v i | pa i ) i=1 where Pr is the probability of vertices (variables) v 1 , v 2 , v 3 , ... v...
(Directed Acyclic Graphs) 关键词:混杂因素 一 为什么要识别混杂因素? 通过随机对照试验得出的研究结论是高级别证据,一般被视为金标准,因为随机对照试验严格平衡了组间的混杂因素,从而准确得出干预效果。 然而,在实际的医学研究中,随机...
(5.6) Directed acyclic graphs Let V be a finite and nonempty set. Then a di- rected graph G over V is given by an ordered pair (V, E) where the elements in V represent the vertices of G and E ⊆ {a −→b | a, b ∈ V, a = b} are the edges of G. If there exis...