The Algebra of Directed Acyclic Graphs [PDF]
, 2013 We give an algebraic presentation of directed acyclic graph structure, introducing a symmetric monoidal equational theory whose free PROP we characterise as that of finite abstract dags with input/output interfaces.
Campos, Marco Devesas, Fiore, Marcelo
core +4 more sources
Independencies Induced from a Graphical Markov Model After Marginalization and Conditioning: The R Package ggm [PDF]
Journal of Statistical Software, 2006 We describe some functions in the R package ggm to derive from a given Markov model, represented by a directed acyclic graph, different types of graphs induced after marginalizing over and conditioning on some of the variables.
Giovanni M. Marchetti
doaj +4 more sources
Combined Deep Learning With Directed Acyclic Graph SVM for Local Adjustment of Age Estimation [PDF]
IEEE Access, 2021 In order to further improve the accuracy of age estimation, a locally adjusted age estimation algorithm based on deep learning and directed acyclic graph SVM is proposed.
Cui Xiao +3 more
doaj +2 more sources
A Survey on Directed Acyclic Graph-Based Blockchain in Smart Mobility [PDF]
SensorsThis systematic review examines the integration of directed acyclic graph (DAG)-based blockchain technology in smart mobility ecosystems, focusing on electric vehicles (EVs), robotic systems, and drone swarms.
Yuhao Bai, Soojin Lee, Seung-Hyun Seo
doaj +2 more sources
The Covering Threshold of a Directed Acyclic Graph by Directed Acyclic Subgraphs [PDF]
The Electronic Journal of Combinatorics, 2022 Let $H$ be a directed acyclic graph (dag) that is not a rooted star. It is known that there are constants $c=c(H)$ and $C=C(H)$ such that the following holds for $D_n$, the complete directed graph on $n$ vertices. There is a set of at most $C\log n$ directed acyclic subgraphs of $D_n$ that covers every $H$-copy of $D_n$, while every set of at most $c ...
Raphael Yuster
openalex +3 more sources
A Novel Fault Diagnosis Method Using FCEEMD-Based Multi-Complexity Low-Dimensional Features and Directed Acyclic Graph LSTSVM [PDF]
EntropyRolling bearings, as critical components of rotating machinery, significantly influence equipment reliability and operational efficiency. Accurate fault diagnosis is therefore crucial for maintaining industrial production safety and continuity.
Rongrong Lu +7 more
doaj +2 more sources
A directed acyclic graph for interactions. [PDF]
Int J Epidemiol, 2021 Abstract Background Directed acyclic graphs (DAGs) are of great help when researchers try to understand the nature of causal relationships and the consequences of conditioning on different variables.
Nilsson A +3 more
europepmc +4 more sources
Big data directed acyclic graph model for real-time COVID-19 twitter stream detection [PDF]
Pattern Recognition, 2022 Bakhtiar Amen, Thanh-Toan Do
exaly +2 more sources
Likelihood Ratio Tests for a Large Directed Acyclic Graph [PDF]
Journal of the American Statistical Association, 2020 Chunlin Li, Xiaotong Shen, Wei Pan
exaly +2 more sources