Vertaile menetelmiä

	Hybrid Fault Tree Analysis	Bayesiläinen verkko
Tieteenala	Koesuunnittelu	Bayesilainen tilastotiede
Menetelmäperhe	Process / pipeline	Bayesian methods
Syntyvuosi	1983–2001 (multiple extensions)	1988
Kehittäjä	Tanaka et al. (fuzzy extension, 1983); Bobbio et al. (Bayesian integration, 2001)	Judea Pearl
Tyyppi	Quantitative safety and reliability analysis method	Probabilistic graphical model
Alkuperäislähde	Tanaka, H., Fan, L. T., Lai, F. S., & Toguchi, K. (1983). Fault-tree analysis by fuzzy probability. IEEE Transactions on Reliability, 32(5), 453–457.	Pearl, J. (1988). Probabilistic Reasoning in Intelligent Systems: Networks of Plausible Inference. Morgan Kaufmann. ISBN: 978-1558604797
Rinnakkaisnimet	Hybrid FTA, Fuzzy-Bayesian FTA, Extended Fault Tree Analysis, Integrated FTA	Bayes network, belief network, probabilistic graphical model, directed graphical model
Liittyvät	5	4
Tiivistelmä	Hybrid Fault Tree Analysis (Hybrid FTA) extends classical Fault Tree Analysis by integrating complementary modelling paradigms — most commonly fuzzy set theory, Bayesian networks, or event-tree logic — to overcome the strict data requirements and static assumptions of traditional FTA. The hybrid approach allows analysts to handle uncertainty in failure probability estimates, capture dynamic dependencies between components, and update risk assessments as new evidence becomes available, making it especially valuable in complex engineering systems where complete statistical failure data are rarely available.	A Bayesian network is a probabilistic graphical model, introduced by Judea Pearl in 1988, that encodes a set of variables and their conditional dependencies as a directed acyclic graph (DAG). Each node represents a variable; each directed edge encodes a direct probabilistic influence. By combining Bayes' rule with the graph's conditional independence structure, the model supports reasoning under uncertainty — computing the probability of any variable given observed evidence about others.