เปรียบเทียบวิธี

	การวิเคราะห์หาสาเหตุที่แท้จริงแบบเบย์	การวิเคราะห์แผนภูมิต้นเหตุแห่งความเสียหาย (Fault Tree Analysis - FTA)
สาขาวิชา	การออกแบบการทดลอง	ความเชื่อถือได้
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1990s–2000s	1981
ผู้ริเริ่ม	Rooted in Pearl's Bayesian network theory (Judea Pearl, 1988); applied to RCA in process/reliability engineering from the 1990s onward	Vesely et al. (US NRC Fault Tree Handbook)
ประเภท	Probabilistic causal inference method	Deductive top-down failure analysis
แหล่งต้นตำรับ	Pourret, O., Naim, P., & Marcot, B. (Eds.). (2008). Bayesian Networks: A Practical Guide to Applications. Wiley. ISBN: 978-0470060308	Vesely, W. E., Goldberg, F. F., Roberts, N. H., & Haasl, D. F. (1981). Fault Tree Handbook (NUREG-0492). U.S. Nuclear Regulatory Commission.
ชื่อเรียกอื่น	Bayesian RCA, Bayesian causal analysis, probabilistic root cause analysis, BN-RCA	FTA, Fault Tree Method, Top-Down Reliability Analysis, Hata Ağacı Analizi
ที่เกี่ยวข้อง	6	3
สรุป	Bayesian Root Cause Analysis (Bayesian RCA) integrates Bayesian network theory with structured root cause investigation to quantify the probability that each candidate cause is responsible for an observed failure or undesired event. Unlike deterministic RCA methods, it propagates uncertainty through the causal graph, updates beliefs as evidence accumulates, and ranks competing hypotheses by posterior probability — providing a principled, auditable basis for corrective action.	Fault Tree Analysis (FTA) is a top-down, deductive reliability method that begins with an undesired top-level failure event and systematically traces backward through chains of contributing causes using Boolean logic gates (AND, OR). First formalized by Watson at Bell Telephone Laboratories in 1961 and later standardized by Vesely, Goldberg, Roberts, and Haasl in the landmark 1981 NRC Fault Tree Handbook, FTA has become a cornerstone of quantitative risk assessment in nuclear, aerospace, and industrial safety engineering.