|   |  Graphical Models  | 
Graphical models are a graphical representation of the conditional
independence relations among a set of variables. The graph is useful
both as an intuitive representation of how the variables are
related, and as a tool for defining efficient message passing
algorithms for probabilistic inference.  
Some relevant publications:
-  Silva, R. Chu, W. and Ghahramani, Z. (2008). Hidden common cause
relations in relational learning.  In Advances on Neural Information Processing
Systems (NIPS-2007).  
 
-  Zhang, J., Ghahramani, Z, and Yang, Y. (2008) Flexible latent
variable models for multi-task learning. Machine Learning.
  
   
-  Pérez-Cruz, F. Ghahramani, Z. and Pontil, M. (2007) . 
 Conditional
Graphical Models.
 In Predicting Structured Data, Edited by
G. H. Bakir, T. Hofmann, B. Schölkopf, A. J. Smola, B. Taskar and
S. V. N. Vishwanathan, MIT Press, September.
  
 
- Silva, R. and Ghahramani, Z. (2006) 
 Bayesian Inference for Gaussian Mixed Graph
Models.
 In Uncertainty in Artificial Intelligence
(UAI-2006).
   
- Wood, F., Griffiths, T.L. and Ghahramani, Z. (2006) 
 A Non-Parametric Bayesian Method for
Inferring Hidden Causes.
 In Uncertainty in Artificial
Intelligence (UAI-2006) pp. 536-543.
  
 
- Beal, M.J. and Ghahramani, Z. (2006) 
 Variational Bayesian
learning of directed graphical models with hidden variables.
 Bayesian Analysis 1:793--832.
 
- Chu, W. Ghahramani, Z. and Wild D.L. (2004) 
 A Graphical Model for Protein Secondary
Structure Prediction.
 In Proceedings of the Twenty-First
International Conference on Machine Learning
(ICML-2004). Morgan-Kaufmann, pp. 161-168.
  
 
-   Murray, I. and Ghahramani, Z. (2004) 
 Bayesian Learning in
	Undirected Graphical  Models: Approximate MCMC
	  algorithms.
 In
	Uncertainty in Artificial Intelligence
	(UAI-2004). 
 
- Ghahramani, Z. (2002) 
 Graphical models: parameter
learning.
 In Arbib, M. A. (ed.) Handbook
of Brain Theory and Neural Networks, Second Edition. MIT Press.
 
- 
Beal, M. J. and Ghahramani, Z. (2002) 
 The Variational Bayesian EM Algorithm for Incomplete Data: with
	  Application to Scoring Graphical Model Structures [pdf] 
[abstract]
 In Bayesian Statistics 7
 
-  Ghahramani, Z. and Beal, M.J. (2001) 
 Propagation algorithms for
	variational Bayesian learning [ps]  [pdf]  [abstract]
 In Leen, T.K., Dietterich, T.G., and Tresp, V. (eds) 
 Neural Information Processing Systems 13:507-513.  MIT
Press.
 
-  Ghahramani, Z.  (2001)  
 An Introduction to Hidden Markov Models and Bayesian Networks [ps]    [pdf]
 International Journal of Pattern Recognition and
	  Artificial Intelligence 15(1):9-42.
 
-   Ghahramani, Z. and
	Beal, M.J. (2000) 
 Graphical models and variational methods
 In Saad & Opper (eds)
	 Advanced Mean Field Method---Theory and Practice. MIT
	Press  
 
-   
	  Jordan, M.I, Ghahramani, Z., Jaakkola, T.S., and Saul, L.K. (1999)  
 An introduction to variational methods for graphical models
 Machine Learning 37:183-233.