Results 81 to 90 of about 14,176 (292)
Advances in causal discovery methods for ecological time series
Biological Reviews, EarlyView.ABSTRACT Recent advances in data collection technologies (e.g. automated sensor networks, satellite remote sensing, and high‐throughput sequencing) have greatly expanded the availability of ecological time series, enabling new opportunities for causal analyses in dynamic ecosystems.
Kenta Suzuki +6 more
wiley +1 more source
The Scientific World Journal, 2014 A complex computing problem can be solved efficiently on a system with multiple computing nodes by dividing its implementation code into several parallel processing modules or tasks that can be formulated as directed acyclic graph (DAG) problems. The DAG
Yuyi Jiang, Zhiqing Shao, Yi Guo
doaj +1 more source
Community detection in directed acyclic graphs [PDF]
The European Physical Journal B, 2015 Some temporal networks, most notably citation networks, are naturally represented as directed acyclic graphs (DAGs). To detect communities in DAGs, we propose a modularity for DAGs by defining an appropriate null model (i.e., randomized network) respecting the order of nodes.
Leo Speidel +2 more
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Matching Directed Acyclic Graphs
, 2020 U ovom radu se bavimo problemom pronalaska maksimalnog sparivanja usmjerenih acikličkih grafova. Analizirat ćemo problem i prezentirat neke algoritme za rješavanje tog problema.In this paper we study the problem of finding maximum weight matching of ...
Blažević, Mislav
core
Partial identification with categorical data and nonignorable missing outcomes
Canadian Journal of Statistics, EarlyView.Abstract Nonignorable missing outcomes are common in real‐world datasets and often require strong parametric assumptions to achieve identification. These assumptions can be implausible or untestable, and so we may wish to forgo them in favour of partially identified models that narrow the set of a priori possible values to an identification region.
Daniel Daly‐Grafstein, Paul Gustafson
wiley +1 more source
Emergence of global synchronization in directed excitatory networks of type I neurons
Scientific Reports, 2020 The collective behaviour of neural networks depends on the cellular and synaptic properties of the neurons. The phase-response curve (PRC) is an experimentally obtainable measure of cellular properties that quantifies the shift in the next spike time of ...
Abolfazl Ziaeemehr +2 more
doaj +1 more source
Search and sweep numbers of finite directed acyclic graphs
, 1993 The search number of a graph is the least number of searchers needed to find any (possibly infinitely fast) intruder hiding in the vertices or edges of the graph.
Nowakowski, Richard J. +1 more
core +1 more source
The SIR Model in a Moving Population: Propagation of Infection and Herd Immunity
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT In a collection of particles performing independent random walks on Zd$\mathbb {Z}^d$ we study the spread of an infection with SIR dynamics. Susceptible particles become infected when they meet an infected particle. Infected particles heal and are removed at rate ν$\nu$.
Duncan Dauvergne, Allan Sly
wiley +1 more source
LCA Queries in Directed Acyclic Graphs [PDF]
, 2005 We present two methods for finding a lowest common ancestor (LCA) for each pair of vertices of a directed acyclic graph (dag) on n vertices and m edges. The first method is surprisingly natural and solves the all-pairs LCA problem for the input dag on n vertices and m edges in time O(nm). As a corollary, we obtain an O(n2)-time algorithm for finding
Miroslaw Kowaluk, Andrzej Lingas
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International Journal of Cancer, EarlyView.Early‐life exposures may influence immune system development and, in turn, affect cancer susceptibility. In this population‐based case‐control study, the authors examined whether in utero or early childhood exposures were associated with the risk of developing multiple myeloma in adulthood.
Zhuoyu Sun +10 more
wiley +1 more source