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<DIV><FONT face=Arial size=2>Dear RST List folk:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am interested in what we know collectively about
unsignaled RST relations. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>From the earliest stages of RST development, it has
been clear that in most texts, a large fraction of the relations were not
"signaled" by any word, phrase, syntactic configuration or other explicit
indication. Different folks have different expectations about what a
general percentage might be. We should expect that, since we work
with texts from different authors and sources. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The numbers that I have heard have ranged from
about 30% unsignaled relations to about 75%. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For comparison, in the 15 analyses on the RST
website, out of 187 relations, 52 are signaled, about 28%. The remaining
72% are unsignaled. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>What data do you know about? Are there
studies, published or unpublished, that give additional
information?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Please reply to me or to the list about what you
are aware of, and I will post a summary. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Many thanks.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Bill Mann</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><A
href="mailto:bill_mann@sil.org">bill_mann@sil.org</A></FONT></DIV></BODY></HTML>