!!! Printer Problems Diagnosis

This small demo example shows the basic functionality of KnowWE and its corresponding knowledge representations for the formalization of diagnostic knowledge.

We build a knowledge base for deriving the reasons for the faults of an imaginary printer.

[{TableOfContents title='Contents' numbered='true'}]

!!! Set-Up

!! Annotate Wiki Articles
Every article containing knowledge of the printer example needs to be tagged in a special manner. 
We choose the tag name {{Printer_Demo}} and we insert the annotation 
{{{
%%Package Printer_Demo
}}}
into every particular article containing knowledge.

!! Define the Knowledge Base Center
In general, the knowledge base can be distributed across many wiki articles (each of them tagged with {{Printer_Demo}}).
Therefore, we need to define a place where all knowledge elements are collected into a single knowledge base.
For this, we use the {{KnowledgeBase}} markup in the following manner:
{{{
%%KnowledgeBase 
  Printer Fault Diagnosis Demo 
  @author: joba
  @version: 1.0
  @uses: Printer_Demo
%
}}}

By inserting the markup the following center is provided:

%%KnowledgeBase 
  Printer Fault Diagnosis Demo 
  @author: joba
  @version: 1.0
  @uses: Printer_Demo
%



!!! Terminology

In the first step we need to define the terminology of the planned system, i.e., the questions (inputs into the system) and the solutions (outputs of the system).
The definition of terms for questions and solutions is described in the article [Tutorial Printer Problem - Terminology].

!!! Derivation Knowledge

After the definition of the terminology we need to define knowledge elements that implement the derivation and dialog behavior of the knowledge base.
For that, d3web/KnowWE provides a number of alternatives ranging from scoring rules, decision trees to set-covering models.
In this tutorial we show how to implement the derivation knowledge as a DiaFlux flowchart model.

* [DiaFlux implementation|Tutorial Printer Problem - DiaFlux]


!!! Testing the Knowledge Base

In the next step, we test the knowledge base by running an example dialog.

!! Quick Interview
A simple test dialog interface can be created by inserting the markup

{{{
[{KnowWEPlugin quickInterview}]
%%ShowSolutions @master: Tutorial Printer Problems
}}}

into the same article, where {{KnowledgeBase}} is defined. 
The markup will provide an interface for the user:

[{KnowWEPlugin quickInterview}]
%%ShowSolutions @master: Tutorial Printer Problems

!! Interactive Single-Question Dialog (commercial)

In the commercial version of KnowWE (provided by denkbares), an interactive single-question dialog is provided. 
Here, only the currently active question is shown that should be answered by the user. 
Derived solutions are printed at the end of the dialog session.

The dialog is started by using the tools menu of the {{KnowledgeBase}} markup as shown in the image below.

[{Image src='Printer Problem denkbares Dialog.png' width='800' align='left' caption='Starting the interactive dialog interface.' }]


%%Package Printer_Demo