Results 31 to 40 of about 255,218 (244)

Graphical Markov models: overview [PDF]

open access: yes, 2015
We describe how graphical Markov models started to emerge in the last 40 years, based on three essential concepts that had been developed independently more than a century ago.
Andersen   +73 more
core   +2 more sources

Bayesian Covariance Structure Modeling of Responses and Process Data

open access: yesFrontiers in Psychology, 2019
A novel Bayesian modeling framework for response accuracy (RA), response times (RTs) and other process data is proposed. In a Bayesian covariance structure modeling approach, nested and crossed dependences within test-taker data (e.g., within a testlet ...
Konrad Klotzke, Jean-Paul Fox
doaj   +1 more source

Political Uncertainty and Stock Market Volatility: New Evidence from the 2014 Scottish Independence Referendum

open access: yesScottish Journal of Political Economy, 2018
This paper investigates the extent to which companies headquartered in Scotland were exposed to heightened political uncertainty in the run-up to, and after, the 2014 independence referendum.
Julia Darby, G. Roy
semanticscholar   +1 more source

What Is a Causal Graph?

open access: yesAlgorithms
This article surveys the variety of ways in which a directed acyclic graph (DAG) can be used to represent a problem of probabilistic causality. For each of these ways, we describe the relevant formal or informal semantics governing that representation ...
Philip Dawid
doaj   +1 more source

A Formal Treatment of Sequential Ignorability

open access: yes, 2013
Taking a rigorous formal approach, we consider sequential decision problems involving observable variables, unobservable variables, and action variables. We can typically assume the property of extended stability, which allows identification (by means of
Constantinou, Panayiota   +1 more
core   +1 more source

A local independence number condition for n-extendable graphs

open access: yesDiscrete Mathematics, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

The Effect of Extended Medicaid on the Emergency Department Visits: An analysis of the 2008 Oregon Health Program

open access: yesJournal of Applied Business and Economics, 2019
I analyze the effect of the extended Medicaid program on the emergency department use behavior by using the data from the Oregon Health Program conducted in 2008.
Myoung-Jin Keay
semanticscholar   +1 more source

Retrospective-prospective symmetry in the likelihood and Bayesian analysis of case-control studies

open access: yes, 2013
Prentice & Pyke (1979) established that the maximum likelihood estimate of an odds-ratio in a case-control study is the same as would be found by running a logistic regression: in other words, for this specific target the incorrect prospective model is ...
Byrne, Simon P. J., Dawid, A. Philip
core   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

open access: yesMolecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero   +11 more
wiley   +1 more source

A sufficient condition to extend polynomial results for the Maximum Independent Set Problem

open access: yesDiscrete Applied Mathematics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

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