Assume System Belief¶

Definition¶

<assume_system_belief>
  <proposition predicate="p" value="a"/>
</assume_system_belief>

The plan item that assumes a proposition. The proposition will be a part of the system's private beliefs.

Parents¶

• <plan>
• <postplan>
• <then>
• <else>

Children¶

• <proposition>

Behaviour¶

Using the element has the effect of adding the assumed proposition to the private beliefs of the system. This means that it is available as an answer to a question, or as a parameter to a service call. Assumptions will not be validated by user defined validators, and only propositions over individuals already known to the system can be made (e.g. static individuals).

Examples¶

Assume_System_Belief element for assuming that the user is an adult¶

<assume_system_belief>
  <proposition predicate="user_age_category" value="adult"/>
</assume_system_belief>

Resolve goal utilising assume_system_belief element for assuming the answer to the question¶

<goal type="resolve" question_type="wh_question" predicate="quantity_of_water">
  <plan>
    <assume_system_belief>
      <proposition predicate="quantity_of_water" value="20"/>
    </assume_system_belief>
  </plan>
</goal>