Results 111 to 120 of about 1,258,420 (289)
Calculating TETRAD Constraints Implied by Directed Acyclic Graphs
, 2018 Peter Spirtes.
Peter Spirtes (5372207)
core +1 more source
JCPP Advances, EarlyView.Abstract Background Infant sleep is multidimensional, with sleep habits and sleep problems often co‐occurring and changing rapidly during early life. Evidence links infant sleep with later neurodevelopmental and behavioral outcomes, yet few studies have examined overall sleep patterns, their changes over time, and outcomes across multiple preschool ...
Wei Wei, Jun Zhang, Hui Wang
wiley +1 more source
Graphical Models for Structural Vector Autoregressions [PDF]
In this paper a method to identify the causal structure associated with a VAR model is proposed. The structure is described by means of a graph, which provides a rigorous language to analyze the statistical and logical properties of causal relations ...
Alessio Moneta
core
Path Degeneracy and Applications
Journal of Graph Theory, EarlyView.ABSTRACT In this work, we relate girth and path‐degeneracy in classes with sub‐exponential expansion, with explicit bounds for classes with polynomial expansion and proper minor‐closed classes that are tight up to a constant factor (and tight up to second order terms if a classical conjecture on existence of g $g$‐cages is verified). As an application,
Yuquan Lin, Patrice Ossona de Mendez
wiley +1 more source
Exchange Rates, Foreign Income, and U.S. Agricultural Exports [PDF]
While it is generally accepted that change in the real value of the dollar is an important determinant of exports, it has not been rigorously demonstrated that this relationship, derivable from theory, holds empirically for agricultural exports and the ...
Somwaru, Agapi +2 more
core
Saturated Partial Embeddings of Planar Graphs
Journal of Graph Theory, EarlyView.ABSTRACT In this work, we study how far one can deviate from optimal behavior when embedding a planar graph. For a planar graph G $G$, we say that a plane subgraph H ⊆ G $H\subseteq G$ is a plane‐saturated subgraph if adding any edge (possibly with new vertices) to H $H$ would either violate planarity or make the resulting graph no longer a subgraph of
Alexander Clifton, Nika Salia
wiley +1 more source
Journal of Hospital Medicine, EarlyView.Abstract Background Community‐acquired pneumonia (CAP) is a leading cause of hospitalization and mortality. The influence of sociodemographic characteristics on adverse outcomes in adults hospitalized with CAP remains poorly understood, particularly for patients younger than 65.
Farhana Islam +9 more
wiley +1 more source
Wildlife Society Bulletin, 2017 North American grassland birds experienced steeper, more consistent, and widespread declines than other avian guilds in the past quarter century. Despite the surge of research into their ecology and conservation, there remains considerable uncertainty ...
Danielle M. Ethier, Thomas D. Nudds
doaj +1 more source
Independencies Induced from a Graphical Markov Model After Marginalization and Conditioning: The R Package ggm [PDF]
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
core
Methodological progress note: Descriptive, predictive, and causal observational studies
Journal of Hospital Medicine, EarlyView.Abstract Observational data can be used to answer descriptive, predictive, and causal questions. Analysis of observational data can be challenging and may require complex analytical methods to produce meaningful, unbiased results; for example, when addressing confounding in causal studies.
Brett P. Dyer +2 more
wiley +1 more source