What Is An Influence Diagram

It shows influences among them as arrows. It involves four variable types for notation.

Precisiontree Decision Making With Decision Trees Influence

This simple influence diagram depicts a variable describing the situation.

What is an influence diagram. Their appearance is very similar to a flowchart. An influence diagram shows in any given situation the main structural features and the important influences that exist among them. A decision a rectangle chance an oval objective a hexagon and function a rounded rectangle.

Whereas a decision tree shows more details of possible paths an influence diagram shows dependencies among variables more clearly. How to do an influence diagram. It is a quick way to get an overview to an activity a process or organization and their main relationships.

The influence diagram refers to a particular tool used by the project team that is comprised of a chart diagram or other exclusive graphical representation of a number of situations that depict and display all particular influences on a on the project and or the particular project management activity. They show which variables can be directly influenced by the decision maker and which are strictly affected by outside influences. Influence diagram for a marketing plan for example may show how the marketing budget and proposed price would affect a products market share total costs and revenue and net income.

An influence diagram displays a summary of the information contained in a decision tree. An attribute defined as a spawning success utility index combined estimates of spawning success in each tributary a function of water elevations associated with each proposed management alternative and a tributary weighting a judgment of the contribution of each tributary to overall juvenile recruitment in the reservoir. It is a generalization of a bayesian network in which not only probabilistic inference problems but also decision making problems.

Influence diagrams also use solid lines to denote influence. Influence diagrams are notable because they are an effective way to visualize various outcomes in the decision making process. An influence diagram id also called a relevance diagram decision diagram or a decision network is a compact graphical and mathematical representation of a decision situation.

It depicts the key elements including decisions uncertainties and objectives as nodes of various shapes and colors. An influence diagram is an intuitive visual display of a decision problem.

Influence Diagram Wikipedia