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<Paper uid="J79-1013">
  <Title>Conclusion APPENDIX A . Causal Chain Expansion ................. Computkr Example 52 APPENDIX E . Inference-Reference Relaxation Cycle</Title>
  <Section position="22" start_page="20" end_page="20" type="concl">
    <SectionTitle>
RE~~RY tloe S.
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    <Paragraph position="0">  --------Inftencing eventual ly,ceases. Ue interrupt processing at this o~nt to examine C0815, R the unknodn Jenny, ot ice the new inf ormat i'on which has been bu I 1 t up about C0815.</Paragraph>
    <Paragraph position="1">  Sims it will ssttle tha re.fer-ance ambigbi ty, we have a closer, loo'k atbthe structure which represents C0015's bein in Palo Alto yesterday (CO811). ~0073 reprrten ts Bi l I' s knodledge of CBa15's loca,t ion yesterday (but has no direct relevance to. this-example). Notice that the reasons for PIEROR\! believing that C0915 was in.Pal,o Alto at time C8011 are twofold: that John was in Palo Alto at that time,'and that a bod part of John uae in PHYSCONJ.ui th ~0018 then.</Paragraph>
    <Paragraph position="2"> We also examine the structure which represents the inference that Bi l l kn'ows. that John feels a positive emotion toward C0015, This information ui I I come into play after C8015's identit is solved (on the second inference pass). b087 indicates. when Bi 1 l started knowing this fact (COB48 is his LTMI.</Paragraph>
    <Paragraph position="3"> The first ass of inferencin is now f inish9d. We al low R k! MORY to proceed. ? t not ices that a.reference decision is pendin , and attempts to decide betu??~ #JENNY1 and i) JENNY2 as the referent of CC2!5 b1.i using newly-inferred information about Coal5 (from the f ir$t pass). I t sirccaeds,. because #JENNY2 was knoun to be in Palo Alto yesterday, and this matches new C0915 information, C0056.</Paragraph>
    <Paragraph position="4"> BEflORY merges Coal5 into UJEFINYZ, purging dld infor ation uhich is not used to augment UJENNYZ. lecal 1 that the merge rep1 acos occurrence set pointers, so. that ever PlEtIGRY structure uhich referenced C80 5 now references #JENNYZ.</Paragraph>
    <Paragraph position="5"> Y We have anather look at #JENNY2 before the second irnf erence p'ass begi ns.</Paragraph>
    <Paragraph position="6">  This conslst$.o,f sub'ject'ing each inferehce uhich arose from the first pass to inqference again. The,ISEEN property prevents-duplication of inferences during second and subsequent passes.</Paragraph>
    <Paragraph position="7"> One new inference which was not possib,e on the first'pass is .that Bill probably became anyry at John* Thi e inference ar i ses from Bill 3 knouin -that John .feels a'positive B emotion toward #JE NY2, sohenne. B i I I l oves. Call-9 is the-structure representing Bi l 1's incipient anger toward John* The crucial po-int is that this inference became possible on1 ya after ,#JENNYZ1 s features became avat lable.after a'reference decision, which uas in' turn'made possible through first-pass inferencing, inal all^, ue have a look at this second pass inference.</Paragraph>
    <Paragraph position="8"> C0121 represents the cause of B i l l 's anger as bei n C0086, hi s knowing 'about t'he k I ssi ng event . e0049.</Paragraph>
    <Paragraph position="9"> Notice the reasons MERORY believes that Bi l l became angry at John:. he knew John ki ssed #JEEINY2 (th~s' structure 5s C0B491, and he loves #JENNY2.</Paragraph>
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