Journal
JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
Volume 21, Issue 2, Pages 233-238Publisher
SYSTEMS ENGINEERING & ELECTRONICS, EDITORIAL DEPT
DOI: 10.3969/j.issn.1004-4132.2010.02.010
Keywords
multivariate time series; latent ancestral graph; iterative conditional fitting
Categories
Funding
- National Natural Science Foundation of China [60375003]
- Aeronautics and Astronautics Basal Science Foundation of China [03I53059]
Ask authors/readers for more resources
A class of latent ancestral graph for modelling the dependence structure of structural vector autoregressive (VAR) model affected by latent variables is proposed. The graphs are mixed graphs with possibly two kind of edges, namely directed and bidirected edges. The vertex set denotes random variables at different times. In Gaussian case, the latent ancestral graph leads to a simple parameterization model. A modified iterative conditional fitting algorithm is presented to obtain maximum likelihood estimation of the parameters. Furthermore, a log-likelihood criterion is used to select the most appropriate models. Simulations are performed using illustrative examples and results are provided to demonstrate the validity of the methods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available