DEAL: Learning Bayesian Networks in R

1
DEAL Learning Bayesian Networks in R

• Susanne G. BøttcherClaus Dethlefsen
• Aalborg University
• and
• Novo Nordisk A/S

2
The DEAL Team

• Susanne G. Bøttcher (alma_at_math.auc.dk)Soon to
  finish Ph.D. Supervisor Steffen Lauritzen
• Claus Dethlefsen (dethlef_at_math.auc.dk)Recent
  Ph.D. within state space models. Supervisor
  Søren Lundbye-Christensen
• Both supported by Novo Nordisk A/SAugust
  2001-August 2003

3
History of DEAL

• 1997-2002 Susannes Ph.D. Development of theory
• 2000-2001Preliminary software in S-Plus
  (Susanne)
• Nov/Dec 2001 Prototype of DEAL (Susanne/Claus)
• Aug 2002 DEAL is released (Susanne/Claus)

4
What can DEAL do for us?
5
Bayesian Networks for Mixed Variables
6
Conditional Gaussian Distribution
7
Parameter and Structure Learning
8
Development

• Latent variables, missing observations
• Interface to eg. Hugin or Grappa
• Improvement on search strategies
• Graphical interface
• Applications in Diabetes research

9
Download

• www.math.auc.dk/novo/deal

10
Demonstration