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# Decision Tree Analysis

Decision trees are widely used in operations research. It is mostly applied in decision analysis in order to help and identify that strategy that most likely may lead to reaching a goal. It is also known as a popular tool in machine learning, thus it worth knowing about it from this article.

The ConceptDraw DIAGRAM diagramming and drawing software is the one that can help with creating the needed drawing, including a decision tree. Making decision tree analysis, it is always easy to make the needed matrix as there are plenty of pre-made templates to be used.

## Decision Tree Analysis

This marketing diagram sample represents decision tree. It was redesigned from the Wikimedia Commons file: Decision Tree on Uploading Imagesv2.svg.
"A decision tree is a decision support tool that uses a tree-like graph or model of decisions and their possible consequences, including chance event outcomes, resource costs, and utility. It is one way to display an algorithm.
Decision trees are commonly used in operations research, specifically in decision analysis, to help identify a strategy most likely to reach a goal. ...
A decision tree is a flowchart-like structure in which internal node represents test on an attribute, each branch represents outcome of test and each leaf node represents class label (decision taken after computing all attributes). A path from root to leaf represents classification rules.
In decision analysis a decision tree and the closely related influence diagram is used as a visual and analytical decision support tool, where the expected values (or expected utility) of competing alternatives are calculated.
A decision tree consists of 3 types of nodes:
(1) Decision nodes - commonly represented by squares.
(2) Chance nodes - represented by circles.
(3) End nodes - represented by triangles.
Decision trees are commonly used in operations research, specifically in decision analysis, to help identify a strategy most likely to reach a goal." [Decision tree. Wikipedia]
The marketing diagram example "Decision tree" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Marketing Diagrams solution from the Marketing area of ConceptDraw Solution Park.
Marketing flowchart
Used Solutions

## Decision Tree Analysis

This example was designed on the base of Figure 4.33 "Decision Tree Comparing Colorectal Screening Current Practice with a Targeted Family History Strategy" from the "Principles of Epidemiology in Public Health Practice, Third Edition. An Introduction to Applied Epidemiology and Biostatistics. Self-Study Course SS1978. Lesson 4: Displaying Public Health Data. Section 4: Other Data Displays" on the Centers for Disease Control and Prevention (CDC) website.
"The graph shows a decision tree with outcomes, and probabilities. In this case, a family history decision tree has 16 potential outcomes."
[cdc.gov/ ophss/ csels/ dsepd/ ss1978/ lesson4/ section4.html]
"A decision tree is a decision support tool that uses a tree-like graph or model of decisions and their possible consequences, including chance event outcomes, resource costs, and utility. It is one way to display an algorithm that only contains conditional control statements.
Decision trees are commonly used in operations research, specifically in decision analysis, to help identify a strategy most likely to reach a goal, but are also a popular tool in machine learning." [Decision tree. Wikipedia]
The diagram example "Decision tree" was designed using ConceptDraw software extended with Decision Making solution from Management area of ConceptDraw Solution Park.
Decision diagram example
Used Solutions

## Decision Tree Analysis

This example was designed on the base of Wikimedia Commons file: Decision tree using flow chart symbols.jpg.
"This is a decision tree that is written using flow chart symbols."
[commons.wikimedia.org/ wiki/ File:Decision_ tree_ using_ flow_ chart_ symbols.jpg]
"A decision tree is a flowchart-like structure in which each internal node represents a "test" on an attribute (e.g. whether a coin flip comes up heads or tails), each branch represents the outcome of the test, and each leaf node represents a class label (decision taken after computing all attributes). The paths from root to leaf represent classification rules." [Decision tree. Wikipedia]
The diagram example "Decision tree flowchart" was designed using ConceptDraw software extended with Decision Making solution from Management area of ConceptDraw Solution Park.
Decision diagram example
Used Solutions

## Decision Tree Analysis

The vector stencil library "Decision tree" contains 10 decision tree diagram building blocks.
Use it to design your decision tree diagrams.
The diagram building blocks
example "Design elements - Decision tree" is included in Decision Making solution from Management area of ConceptDraw Solution Park.
Decision diagram stencils
Used Solutions

## Decision Tree Analysis

This example was designed on the base of the Wikimedia Commons file: Derivative Works Decision Tree.svg.
"Decision tree for authorization (or not) of derivative works on Commons"
[commons.wikimedia.org/ wiki/ File:Derivative_ Works_ Decision_ Tree.svg]
"Wikimedia Commons is a shared free image repository. Rather than uploading the same image to some 720 wikis individually, images can be uploaded to commons and can be used from every wiki. This both saves time and server resources." [Wikipedia:Commons Upload Campaign. Wikipedia]
The diagram example "Derivative works decision tree" was designed using ConceptDraw software extended with Decision Making solution from Management area of ConceptDraw Solution Park.
Decision diagram example
Used Solutions
HelpDesk

## How to Draw a Decision-Making Diagram

The Decision-Making solution provides ConceptDraw DIAGRAM users with vector libraries, containing a full set of flowchart symbols. Also, it offers a number of templates and samples, making short work of creating a graphical view of decision-making processes.

## Decision Making

The Decision Making solution offers the set of professionally developed examples, powerful drawing tools and a wide range of libraries with specific ready-made vector decision icons, decision pictograms, decision flowchart elements, decision tree icons, decision signs arrows, and callouts, allowing the decision maker (even without drawing and design skills) to easily construct Decision diagrams, Business decision maps, Decision flowcharts, Decision trees, Decision matrix, T Chart, Influence diagrams, which are powerful in questions of decision making, holding decision tree analysis and Analytic Hierarchy Process (AHP), visual decomposition the decision problem into hierarchy of easily comprehensible sub-problems and solving them without any efforts.

## Fault Tree Diagram

ConceptDraw DIAGRAM diagramming and vector drawing software offers the Fault Tree Analysis Diagrams Solution from the Industrial Engineering Area of ConceptDraw Solution Park for quick and easy creating the Fault Tree Diagram of any degree of detailing.

## Influence Diagram

This sample shows the Influence Diagram. It was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Basic Diagramming Solution from the Universal Diagramming area of ConceptDraw Solution Park.
Influence diagram represents the directed acyclic graph with three types of nodes and three types of arcs that connect the nodes. Decision node is drawn as a rectangle, Uncertainty node is drawn as an oval, Value node is drawn as an octagon.

## Decision Tree Analysis

This decision diagram example was designed on the base of the Wikimedia Commons file: Simple Influence Diagram.svg.
[commons.wikimedia.org/ wiki/ File:Simple_ Influence_ Diagram.svg]
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. [creativecommons.org/ publicdomain/ zero/ 1.0/ deed.en]
"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 is a generalization of a Bayesian network, in which not only probabilistic inference problems but also decision making problems (following the maximum expected utility criterion) can be modeled and solved.
ID was first developed in the mid-1970s by decision analysts with an intuitive semantic that is easy to understand. It is now adopted widely and becoming an alternative to the decision tree which typically suffers from exponential growth in number of branches with each variable modeled. ID is directly applicable in team decision analysis, since it allows incomplete sharing of information among team members to be modeled and solved explicitly. Extensions of ID also find their use in game theory as an alternative representation of the game tree." [Influence diagram. Wikipedia]
The example "Influence diagram" was designed using ConceptDraw software extended with Decision Making solution from Management area of ConceptDraw Solution Park.
Decision diagram example
Used Solutions

## Influence Diagram Software

Influence diagram (ID) is a graphical and mathematical representation of the decision. Influence diagrams are widely used in the decision analysis and in the game theory. They are the alternative to the decision tree. The influence diagram gives to analyst the high-level conceptual view that it can use to build the detailed quantitative model.
This sample shows the Influence diagram. It is a directed acyclic graph with three types of nodes: Decision node is drawn as a rectangle, Uncertainty node is drawn as an oval, Value node is drawn as an octagon. The nodes are connected with arcs.

## Management Area

The solutions from Management area of ConceptDraw Solution Park collect templates, samples and libraries of vector stencils for drawing the management diagrams and mind maps.

## Decision Making

Decision Making - ConceptDraw OFFICE suite provides visual tools that are given support on the stage of the decision making.
The Seven Management and Planning Tools is a set for such diagrams: Affinity Diagram, Relations Diagram, Prioritization Matrix, Root Cause Tree Diagram, Involvement Matrix, PERT Chart, Risk Diagram (PDPC).

## Marketing Charts

ConceptDraw DIAGRAM diagramming and vector drawing software offers the Marketing Diagrams Solution from the Marketing Area with extensive drawing tools, predesigned vector shapes, templates and samples for fast and easy drawing marketing charts and diagrams, marketing schemes and flow charts, various marketing illustrations, etc.

## How to Design Landscape

How to design landscape? You can draw it by hand on a sheet of paper, but for this you need to know the bases of the perspective, you need to have good artistic abilities and to know how to depict the natural elements. But it is much easier and convenient to use the modern ConceptDraw DIAGRAM diagramming and vector drawing software extended with Landscape & Garden Solution from the Building Plans Area.

## CORRECTIVE ACTIONS PLANNING. Risk Diagram (PDPC)

Risk Diagram (PDPC) - ConceptDraw OFFICE suite is a software for Risks Diagram making. This diagram identifies possible risks in accomplishing corrective actions. With the Risks Diagram, one analyzes each action separately in a tree of all actions and develops a preventive action in response of each potential obstacles or circumstances which may be a risk.
7MP Tools

## MS Visio Look a Like Diagrams

No need for any special drawing skills to create professional looking diagrams outside of your knowledge base. ConceptDraw DIAGRAM takes care of the technical details, allowing you to focus on your job, not the drawing.
ConceptDraw DIAGRAM delivers full-functioned alternative to MS Visio. ConceptDraw DIAGRAM supports import of Visio files. ConceptDraw DIAGRAM supports flowcharting, swimlane, orgchart, project chart, mind map, decision tree, cause and effect, charts and graphs, and many other diagram types.

## Marketing Diagrams

Marketing Diagrams solution extends ConceptDraw DIAGRAM diagramming software with abundance of samples, templates and vector design elements intended for easy graphical visualization and drawing different types of Marketing diagrams and graphs, including Branding Strategies Diagram, Five Forces Model Diagram, Decision Tree Diagram, Puzzle Diagram, Step Diagram, Process Chart, Strategy Map, Funnel Diagram, Value Chain Diagram, Ladder of Customer Loyalty Diagram, Leaky Bucket Diagram, Promotional Mix Diagram, Service-Goods Continuum Diagram, Six Markets Model Diagram, Sources of Customer Satisfaction Diagram, etc. Analyze effectively the marketing activity of your company and apply the optimal marketing methods with ConceptDraw DIAGRAM software.

## PDPC

ConceptDraw DIAGRAM extended with Seven Management and Planning Tools Solution from the Management Area of ConceptDraw Solution Park is the best software for drawing all types of diagrams from the Seven Management and Planning Tools: Affinity Diagram, Relations Diagram, Prioritization Matrix, Root Cause Analysis Tree Diagram, Involvement Matrix, PERT Chart, and Risk Diagram (PDPC).