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Facts / Concept Instances
Facts / Concept Instances

This article explains what facts and certainty factors are, how you can test relationships to infer new facts and how facts vary across different concept types. It also gives you example knowledge maps to test facts and certainty factors inside the Rainbird Studio.

Rainbird uses three different ways to get information. Rainbird will:


Rainbird will consider and try to match concept instances and facts created by the knowledge engineer and inserted directly into the knowledge map, or by the end-user at run time. Populating a map with concept instances and facts provides Rainbird with direct access to the data required to solve a query.  Setting a knowledge map up to match concept instances and facts is straightforward and easy to track; however it’s not very flexible and cannot cover every potential subject/object variable as they would need to all be manually input by the engineer/end-user.


Thanks to the rules enclosed in relationships, Rainbird can infer information. Rainbird will attempt to satisfy the conditions of a rule by generating appropriate relationship instances at run-time by running any rules that are provided for the relationship in question.  Rainbird will generally infer a final decision, but Rainbird will also infer information needed for the final decision. Setting up Rainbird to complete a query through inferring information is a suitable method to cover all potential subject/object variables.


If Rainbird cannot match or infer a relationship instance, Rainbird will ask questions to the user. If the user provides an answer, a new relationship instances will be created which Rainbird can use to satisfy the rules of a condition. A query just relying on Rainbird asking questions can be time consuming for users to complete, especially when the questions pertain to general truths, which could potentially be asked again and again.

Please continue reading the article following the sub-topics:

  1. Facts / Concept Instances - Instances and Certainty
  2. Facts / Concept Instances - Build Example
  3. Facts / Concept Instances - Different Concept Type Facts
  4. Facts / Concept Instances - Downloadable Model
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