Title :
Learning graphical models with hypertree structure using a simulated annealing approach
Author :
Borgelt, Christian ; Kruse, Rudolf
Author_Institution :
Dept. of Knowledge Process. & Language Eng., Otto-von-Guericke-Univ. of Magdeburg, Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
A major topic of recent research in graphical models has been to develop algorithms to learn them from a dataset of sample cases. However, most of these algorithms do not take into account that learned graphical models may be used for time-critical reasoning tasks and that in this case the time complexity of evidence propagation may have to be restricted, even if this can be achieved only by accepting approximations. In this paper we suggest a simulated annealing approach to learn graphical models with hypertree structure, with which the complexity of the popular join tree evidence propagation method can be controlled at learning time by restricting the size of the cliques of the learned network
Keywords :
case-based reasoning; computational complexity; learning (artificial intelligence); modelling; simulated annealing; trees (mathematics); graphical model learning; hypertree structure; join tree evidence propagation method; learned network cliques; sample case dataset; simulated annealing; time complexity; time-critical reasoning tasks; Bayesian methods; Costs; Graphical models; Inference algorithms; Knowledge engineering; Markov random fields; Simulated annealing; Tree graphs;
Conference_Titel :
Fuzzy Systems, 2001. The 10th IEEE International Conference on
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-7293-X
DOI :
10.1109/FUZZ.2001.1007265