What Is An Influence Diagram

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. Their appearance is very similar to a flowchart.

Creating Influence Diagrams

It shows influences among them as arrows.

What is an influence diagram. How to do an influence diagram. Influence diagrams are notable because they are an effective way to visualize various outcomes in the decision making process. They show which variables can be directly influenced by the decision maker and which are strictly affected by outside influences.

It involves four variable types for notation. It depicts the key elements including decisions uncertainties and objectives as nodes of various shapes and colors. A decision a rectangle chance an oval objective a hexagon and function a rounded rectangle.

This simple influence diagram depicts a variable describing the situation. 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. An influence diagram shows in any given situation the main structural features and the important influences that exist among them.

It is a generalization of a bayesian network in which not only probabilistic inference problems but also decision making problems. It is a quick way to get an overview to an activity a process or organization and their main relationships. Whereas a decision tree shows more details of possible paths an influence diagram shows dependencies among variables more clearly.

An influence diagram is an intuitive visual display of a decision problem. Influence diagrams also use solid lines to denote influence. An influence diagram displays a summary of the information contained in a decision tree.

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 id also called a relevance diagram decision diagram or a decision network is a compact graphical and mathematical representation of a decision situation.

An Example Influence Diagram Model Of The Decision To Take Warfarin