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<Paper uid="P79-1014">
  <Title>H~ADING WITH A PURPOSE</Title>
  <Section position="4" start_page="62" end_page="62" type="metho">
    <SectionTitle>
~. ANOTHER EXAMPLE
</SectionTitle>
    <Paragraph position="0"> The following example further illustrates the capabilities of IPP. In this example only IPP's final story representation is snows. This story was also taken from the Boston Globe.</Paragraph>
  </Section>
  <Section position="5" start_page="62" end_page="62" type="metho">
    <SectionTitle>
SCRIPT STERRORISM
ACTOR UNKNOWN ASSAILANTS
SCENES
SCRIPT $ATTACK-PERSON
ACTOR UNKNOWN ASSAILANTS
VICTIM SON OF PREVIOUS PRESIDENT
EUGENIC KJELL LAUG~RUD
SCENES
SCRIPT $SHOOT
ACTOR UNKNOWN ASSAILANTS
VICTIM SON OF PREVIOUS PRESIDENT
EUGENIC KJELL LAUGERUD
SCRIPT SKill
ACTOR UNKNOWN ASSAILANTS
VICTIM SON OF PREVIOUS PRESIDENT
EUGENIC KJELh LAUG~RUD
SCRIPT SATTACK-PLACPS
ACTOR UNKNOWN ASSAILANTS
PLACE HOME OF GOVERNMENT OFFICIAL
SC~NdS
SCRIPT $BOHB
ACTOR UNKNONN ASSAILANTS
PLACE HOME OF GOVERNMENT OFFICIAL
\[PHOTO: Terminated - Wed 27-Jun-79 I:09PM\]
</SectionTitle>
    <Paragraph position="0"> Thls example maces several interesting points about the way IPP operates. Notice that 1PP has jumped to a conclusion about the story,, which, while plausible, could easily be wrong, it assumes that the actor of the SBOMB and SATTACK-PLACE scripts is the same as the actor of the STERRORISM script, which was in turn inferred from the actor of the sbootln~ incident. Tnls is plausible, as normally news stories are about a coherent set of events witn lo~Ical relations amongst them. So it is reasonable for a story to De about a series of related acts of terrorism, committed by the same person or ~roup, and tnat is what IPP assumes here even though that may not be correct. Uut this ~Ind of inference is exactly the Kind which IPP must make in order to do efficient top-down processln~, despite the possibility of errors.</Paragraph>
    <Paragraph position="1"> The otner interesting point about tnis example is the way some of iPP's quite pragmatic heuristics for processln~ give positive results. For instance, as mentioned earlier, the first actor mentioned has a stronz tendency to be important to the understandln~ of a story. In thls story that means that the modlfyin~ prepositional phrase &amp;quot;of former President Su~enlo Kjell Lau~erud&amp;quot; is analyzed and attached to the token built for &amp;quot;son,&amp;quot; usually not an interesting word. Heur~stlcs of this sort ~ive IPP its power and robustness, rather than any single rule about language understandln~.</Paragraph>
  </Section>
class="xml-element"></Paper>