Fishbone diagramessentially belongs to a kind of tree diagram, but there is a difference between these two roles in PMP.
The main role of the fishbone diagram is to find the root cause, but also reflects how the causes interact with each other.
The logic tree (problem tree) is a hierarchical listing of all the sub-problems of a problem, starting at the top level and progressively expanding downwards.
Compared to the fishbone diagram, the purpose of the tree diagram is in expanding the scope of possible problems, and then through the judgment to narrow and eliminate the possible causes is mainly to help you clarify your own thinking, not to carry out repetitive and irrelevant thinking, the tree diagram can not react to the intersection of the influencing factors.
The fishbone diagram analysis is a method often used by consultants for causal analysis, characterized by simplicity and practicality, and more intuitive.
Fishbone diagram is also widely used in the manufacturing industry, in the manufacturing industry applied in the analysis of the problem, mainly from the people, machines, materials, methods, the ring several aspects of the summary, which is conducive to a comprehensive analysis and exploration of the problem, and finally find out the true cause of the problem, solve and improve.
The fault tree is a special kind of inverted tree-like logical causality diagram, which uses event symbols, logic gate symbols and transfer symbols to describe the causal relationship between various events in the system. The input events of the logic gates are the "cause" of the output events, and the output events of the logic gates are the "effect" of the input events.
The fishbone diagram (also known as the cause and effect diagram, Ishikawa diagram) refers to an analytical method to discover the "root cause" of a problem, modern business management education will be divided into several categories such as problem-type, cause-type and countermeasure-type fishbone diagram.
Source: Baidu Encyclopedia - Fishbone Diagram