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Title:

Algebraic tests of general Gaussian latent tree models

Document type:
Zeitschriftenaufsatz
Author(s):
Leung, Dennis; Drton, Mathias
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
WWW:
NIPS Proceedings
Format:
Text
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