EXTENT

Creates a single phrase range which covers the extent of all child evidence

Score calculation

This rule scores its weight if any of its children score.

NB the score is not calculated from the children’s actual score just from whether the children fire or not

Evidence calculation

Its evidence is the single phrase range which covers all its children’s evidence.

Attribute information

• any common attribute
• FOREACH - will always be 1 or 0 foreach count
• WEIGHT - is the score for the rule if fired

Children restrictions

Any rule other than those only allowed a specific parent

Example 1

The following rulebase fragment

<extent weight="80">
    <text data="Trichet" />
    <text data="announced" />
</extent>

evaluating the following document text

Jean-Claude Trichet announced today a rise of 1/2 point in interest rates.
In a separate intervention the governor of the European Central Bank announced that the
institution will keep a firm handle on inflation.

Would fire with a score of “0.80” with a single evidential phrase range from “Trichet” to the second “announced” in the text