Results 51 to 60 of about 92,871 (231)

Ternary directed acyclic word graphs

open access: yesTheoretical Computer Science, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Satoru Miyamoto   +3 more
openaire   +2 more sources

A hybrid particle swarm optimization and hill climbing algorithm for task scheduling in the cloud environments

open access: yesICT Express, 2018
Task scheduling is one of the most important issues in heterogeneous environments when high efficiency is required. Because task scheduling is a Nondeterministic Polynomial (NP)-hard problem, many evolutionary algorithms have been adopted to solve this ...
Negar Dordaie, Nima Jafari Navimipour
doaj   +1 more source

Labeled Directed Acyclic Graphs: a generalization of context-specific independence in directed graphical models [PDF]

open access: yes, 2013
We introduce a novel class of labeled directed acyclic graph (LDAG) models for finite sets of discrete variables. LDAGs generalize earlier proposals for allowing local structures in the conditional probability distribution of a node, such that ...
Corander, Jukka   +3 more
core   +1 more source

Optimizing Iterative Data-Flow Scientific Applications Using Directed Cyclic Graphs

open access: yesIEEE Access, 2023
Data-flow programming models have become a popular choice for writing parallel applications as an alternative to traditional work-sharing parallelism. They are better suited to write applications with irregular parallelism that can present load imbalance.
David Alvarez, Vicenc Beltran
doaj   +1 more source

Bayesian Network Structure Learning Approach Based on Searching Local Structure of Strongly Connected Components

open access: yesIEEE Access, 2022
Learning the structure of Bayesian networks is a challenging problem because it is a NP-Hard problem. As an excellent search & score based method, the K2 algorithm strongly depends on the input of global order of all nodes to ensure the result is ...
Kunhua Zhong   +3 more
doaj   +1 more source

Directed acyclic subsequence graph—Overview

open access: yesJournal of Discrete Algorithms, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Crochemore, M, Melichar, B, Tronek, Z
openaire   +2 more sources

Transformers over Directed Acyclic Graphs

open access: yesAdvances in Neural Information Processing Systems 36, 2023
Transformer models have recently gained popularity in graph representation learning as they have the potential to learn complex relationships beyond the ones captured by regular graph neural networks. The main research question is how to inject the structural bias of graphs into the transformer architecture, and several proposals have been made for ...
Yuankai Luo   +2 more
openaire   +3 more sources

Enhancing the blockchain interoperability through federated learning with directed acyclic graph

open access: yesIET Blockchain, 2023
The use of federated learning to achieve blockchain interoperability has become a hot topic in research, because it enables data exchange without revealing any private information.
Feng Xia, Li Kaiye, Wu Songze, Xin yan
doaj   +1 more source

Planar digraphs without large acyclic sets

open access: yes, 2016
Given a directed graph, an acyclic set is a set of vertices inducing a subgraph with no directed cycle. In this note we show that there exist oriented planar graphs of order $n$ for which the size of the maximum acyclic set is at most $\lceil \frac{n+1 ...
Knauer, Kolja   +2 more
core   +3 more sources

gems: An R Package for Simulating from Disease Progression Models

open access: yesJournal of Statistical Software, 2015
Mathematical models of disease progression predict disease outcomes and are useful epidemiological tools for planners and evaluators of health interventions.
Nello Blaser   +7 more
doaj   +1 more source

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