Showing 61 - 70 of 236
Abstract In this article, we propose a new method to learn the underlying acyclic mixed graph of a linear non-Gaussian structural equation model with given observational data. We build on an algorithm proposed by Wang and Drton, and we show that one can augment the hidden variable structure of...
Persistent link: https://www.econbiz.de/10014610907
Persistent link: https://www.econbiz.de/10014610926
Abstract I thank Ilya Shpitser for his comments on my article, and discuss the use of models with restricted interventions.
Persistent link: https://www.econbiz.de/10014610932
A graphical model is a graph that represents a set of conditional independence relations among the vertices (random variables). The graph is often given a causal interpretation as well. I describe how graphical causal models can be used in an algorithm for constructing partial information about...
Persistent link: https://www.econbiz.de/10005462954
We consider the problem of estimating a sparse precision matrix of a multivariate Gaussian distribution, where the dimension p may be large. Gaussian graphical models provide an important tool in describing conditional independence through presence or absence of edges in the underlying graph. A...
Persistent link: https://www.econbiz.de/10011208468
This book is a collaborative effort from three workshops held over the last three years, all involving principal contributors to the vine-copula methodology. Research and applications in vines have been growing rapidly and there is now a growing need to collate basic results, and standardize...
Persistent link: https://www.econbiz.de/10010728949
This article (which is mainly expository) sets up graphical models for causation, having a bit less than the usual complement of hypothetical counterfactuals. Assuming the invariance of error distributions may be essential for causal inference, but the errors themselves need not be invariant....
Persistent link: https://www.econbiz.de/10010802749
Second-order item response theory models have been used for assessments consisting of several domains, such as content areas. We extend the second-order model to a third-order model for assessments that include subdomains nested in domains. Using a graphical model framework, it is shown how the...
Persistent link: https://www.econbiz.de/10010894047
We demonstrate the usefulness of cognitive models for combining human estimates of probabilities in two experiments. The first experiment involves people's estimates of probabilities for general knowledge questions such as ``What percentage of the world's population speaks English as a first...
Persistent link: https://www.econbiz.de/10010777684
The late-2000s financial crisis has stressed the need of understanding the world financial system as a network of countries, where cross-border financial linkages play a fundamental role in the spread of systemic risks. Financial network models, that take into account the complex...
Persistent link: https://www.econbiz.de/10010842835