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Document type:
Zeitschriftenaufsatz 
Author(s):
Leung, Dennis; Drton, Mathias 
Title:
Algebraic tests of general Gaussian latent tree models 
Abstract:
We consider general Gaussian latent tree models in which the observed variables are not restricted to be leaves of the tree. Extending related recent work, we give a full semi-algebraic description of the set of covariance matrices of any such model. In other words, we find polynomial constraints that characterize when a matrix is the covariance matrix of a distribution in a given latent tree model. However, leveraging these constraints to test a given such model is often complicated by the numb...    »
 
Dewey Decimal Classification:
510 Mathematik 
Congress title:
Neural Information Processing Systems 2018 (NeurIPS 2018) 
Congress / additional information:
3 Dec - 8 Dec 2018; Montreal Convention Centre, Montreal, CAN 
Journal title:
Advances in Neural Information Processing Systems 31 
Year:
2018 
Journal volume:
31 
Pages contribution:
6301-6310 
Language:
en 
Format:
Text