Constructing Decision Models

Decoding Decision Modeling

Tiago Brasil

Lead Data Engineer

Decision Models

Decision modeling is a systematic approach to represent, analyze, and optimize the decision-making process.

A white rectangle with a white outline to facilitate the slide formating

These models formalize decision problems by structuring them into elements using:

Graphical representations
Mathematical operations
Computational techniques

A diagram centered around a target symbol, representing decision-making. Four arrows point outward from the target in four different directions. Each arrow leads to a label and an icon of Objectives,Alternatives, Constraints and Uncertainties

Decision modeling techniques

A Decision tree illustrating weather conditions, humidity and wind patterns.

Decision modeling techniques

An example of an Influence Diagram illustrating the relationships between the components of the decision

Decision modeling techniques

A Ven-Diagram with playing cards illustrating probabilistic relationships

Decision Trees

A white rectangle with a white outline to facilitate the slide formatting A tree with a square on its branch highlighted in yellow

Decision Trees

A white rectangle with a white outline to facilitate the slide formating A tree with a circle on its branch highlighted in yellow

Decision Trees

A white rectangle with a white outline to facilitate the slide formating A tree with a triangle on its branch highlighted in yellow

Decision Trees

A white rectangle with a white outline to facilitate the slide formating A tree with a line on its branch highlighted in yellow

Applying a Decision Tree

The top branch of the Decision Tree with the node "Weather" and three icon of sun, rain and cloud

Applying a Decision Tree

Highlighted rain icon and yellow line leading to a red triangle representing an undesired outcome

Applying a Decision Tree

Highlighted sun icon with a yellow line leading to a label humidity leading to the icons low, medium and high leading to outcomes undesired, desired and undesired respectively

Applying a Decision Tree

Highlighted cloudy icon with a yellow line leading to a label wind leading to the icons low, medium and high leading to outcomes desired, desired and undesired respectively

Influence Diagrams

A white rectangle with a white outline to facilitate the slide formating A diagram depicting a side profile of a human head with a brain outline inside. The decision factors Objectives, Alternatives, Risks & Uncertainty, Constraints and Information & Data.

Image with the symbols of the influence Diagram. Decision as a rectangle,uncertainty as an oval, diamond as Value and the rounded rectangle as function

Applying an Influence Diagram

The Millers are finally getting married! They're considering a beach wedding at sunset. What variables can influence this decision?

An influence diagram showing all the components that influence the decision to have a outdoor beach wedding

Applying an Influence Diagram

The Millers are finally getting married! They're considering a beach wedding at sunset. What variables can influence this decision?

An influence diagram with the objective represented as a rectangle highlighted in yellow

Applying an Influence Diagram

The Millers are finally getting married! They're considering a beach wedding at sunset. What variables can influence this decision?

An influence diagram with the functions represented as a rounded rectangle highlighted in yellow

Applying an Influence Diagram

The Millers are finally getting married! They're considering a beach wedding at sunset. What variables can influence this decision?

An influence diagram with the uncertainties represented as ovals highlighted in yellow

Let's practice!

Decoding Decision Modeling