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<Paper uid="C94-2183">
  <Title>Auton latic Detection of Discourse Structure by Checking Surface information in Sentences</Title>
  <Section position="4" start_page="1125" end_page="1126" type="evalu">
    <SectionTitle>
4 Experiments and Discussion
</SectionTitle>
    <Paragraph position="0"> F, xlmriments of detecting ItS were done \['or him*. sections of an article of the impular science jourmd, '%cience&amp;quot;, translated into Japanese (Vol.17,No.12 &amp;quot;Adwinced Conq)uting for Science&amp;quot;, the origimfl is &amp;quot;St:ientific Atnerican&amp;quot; Vol.257,No.4). For I, he first three sectiolls, we wrote rules \['or clue expressions and woM/phrase chains, and adjusted their parameI+ers through experimentation. The.tl we analyzed t.}lo retnaining six sections by ad(ling rules only for the chle expressiolls. The +malysis l'eStltl.s are s\]lovcn ill 'Fill)le 3. lle,'e the NSs in the t.ext+ werl' classified according to their correct relations ill conne(:lh~g to ilrop(,r (3~S, ~Stlc('.ess ~' Itteans t.liat, the correct, relation alld CS were detected for au NS (correct. relations and CSs were judged I)y authors).</Paragraph>
    <Paragraph position="1"> 'l'abh; 3 shows that nlauy chics uxist in a text, so tirol.</Paragraph>
    <Paragraph position="2"> nmch of the ItS can I.)e guessed without detailed knowledge. lit order I+o COllstrtlcl. rtlleS \['or chle exl)ressions with hroad cow~'rage, we need to COlmull aud aualyzc a large volume of I.exts. l\[owever, in most. cases rules  %r clue e, xpressious can be written exclusively so that they scarcely int.erfcre with each other, h, our experiments, added rules for the remaining six sections had uo influence on the mlalysis of the first three sections.</Paragraph>
    <Paragraph position="3"> The text \['rein sl-13 to sl-19 in Appendix was transformed to the strtlctttre ill Figure l-a as fbllows.</Paragraph>
    <Paragraph position="4"> sl-ld: the clue expression, &amp;quot;-I)AKAI{A-DEAI{U&amp;quot; which tneans &amp;quot;this is because&amp;quot;.</Paragraph>
    <Paragraph position="5"> sl- 15: the clue expression, &amp;quot;-\VA I( 1'3-I)EAIUJ&amp;quot;. s1-16: l.\]le clue exl)ressiou &amp;quot;exnml)le of X&amp;quot;.</Paragraph>
    <Paragraph position="6"> s1-17: the heuristic rule SUl~porliug elaboration rela-I,ion after cxelnplifical, ion-i)resent relal, iou, s1-18: the clm~ expressiou &amp;quot;(SONO)I(H(IEA(-WA), (the reslt\]l, is)&amp;quot; which corresl)ou&lt;ls to &amp;quot;lead&amp;quot; in seillanl, ics.</Paragraph>
    <Paragraph position="7"> sl-19: theehain of&amp;quot;synthet.icalq)roach&amp;quot;+ The text from s4-1 to s4-7 in Appendix was also transformed to the structure, in Figure 1-b as follows.</Paragraph>
    <Paragraph position="8"> s4-2: the cluc expressions: &amp;quot;q~A&amp;quot; (a suffix indicating au interrogative senteuce)in s.'t-I and &amp;quot;(the) answer &amp;quot; ill S&amp;quot;I+2.</Paragraph>
    <Paragraph position="9"> s4-3: thechaiu o\[' &amp;quot;douhle star&amp;quot;.</Paragraph>
    <Paragraph position="10"> s4-4: the chain \['rein &amp;quot;shriuk&amp;quot; in s4--:+ to &amp;quot;this process&amp;quot; in s4-,l (sonte expressions like %his process&amp;quot; ate rega.rded as tttal,clting ally vet'\]) ill a, previous SOIl\[ ellCe).</Paragraph>
    <Paragraph position="11"> s4-5: the chain of&amp;quot;uuclcar fusion&amp;quot;.</Paragraph>
    <Paragraph position="12"> s4-6: the large, similarity wdue between s4-a and s4-(i and the due exl)ressiou &amp;quot;similarly&amp;quot;.</Paragraph>
    <Paragraph position="13"> s4-7: this NS could uot be analyzed correctly. List relation wil, h s,'l-(~ was (h',tected incorrectly because of' their sinlilarity value, lu s.I-6 and s.t-7, while the same ,vord &amp;quot;Ileal,&amp;quot; is us~'d in I;',nglish, IIle prior &amp;quot;heat,&amp;quot; was translated inl.o &amp;quot;ON I)O(tenllmral.lu'e)-( ',A J()\[)'Sll()U-StJl/tI(rise)&amp;quot; in .lal)ancse. lu oMcr to detect the chain l'or I,heir t.ol)ic-doluiuant chaining relation, we must, in\['er that the risiug o\['telulmrat.ure i)roduce a \]leat. Such a l)t'ol)leln is igrlored in t, his research.</Paragraph>
  </Section>
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