Slot¶

Definition¶

<slot predicate="predicate_name">

The grammar entry of the verb phrase (VP) child of the <item> element.

Attributes	Type	Description
predicate	string	Required. Specifies the name of the predicate from which the slot is filled. Predicate names are written using lowercase separated by underscores, e.g. 'current_temperature'.

Parents¶

<item>

Behaviour¶

The <slot> element in the grammar occurs inside its various parent tags and serves as a slot for data from the given predicate, which the system gets from the predicate's <question> . Parent elements can contain multiple <slot> elements if necessary. The <slot> attribute predicate indicates which predicate that the slot gets its data from.

Examples¶

<slot> inside <item> tags:¶

<action name="browse_restaurants">
   <one-of>
      ...
      <item>i want to browse <slot sort="type_food"/> restaurants</item>
      <item>browse <slot sort="type_food"/></item>
      <item>i would like to eat <slot sort="type_food"/></item>
      <item>i want <slot sort="type_food"/></item>
      <item>i want to eat <slot sort="type_food"/></item>
      ...
   </one-of>
</action>

Multiple <slot> tags inside an <answer> tag:¶

<answer predicate="next_membership_level" speaker="system">you need <slot predicate="next_membership_points" type="individual"/> points to reach <slot predicate="next_membership_level" type="individual"/> level</answer>

<slot> inside a <report> tag:¶

<report action="AddToBasketDairy" status="ended">Ok. We will add <slot predicate="selected_dairy"/> to the order.</report>

<slot> inside a <validity> tag:¶

<validity name="CityValidity">invalid parameters <slot predicate="dest_city" type="individual"/></validity>

Last update: June 18, 2020