<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Leigh Ann,<div class=""> Because the analysis through MOR+POST+MEGRASP is based on statistical disambiguation, it will occasionally make mistakes of this type. Depending on the nature of the corpus and speakers, tagging accuracy can get up to about 97%, but it is almost never above 98%. In English, the biggest source of tagging error involves noun-verb ambiguities such as that with “crack”. A first sanity check on this involves typing in “mor +xi” and then entering “crack” and you will see that MOR knows that crack can be both a noun and a verb. You can force the tagger to get the right answer in this particular case, by transcribing the word as “vxcrack” and this will then force the tagger to treat “crack” as a verb. The good consequence of this is that it would then also help get the right analysis on the %gra line. However, in the long run, this is a truly ugly solution. We are exploring other solutions to the noun-verb ambiguity problem, but they will require some extensions of the POSTMORTEM program that would take a couple of weeks.</div><div class=""> If you just want to get your own data set into the best shape, the most straightforward way of dealing with this would be to just correct the %mor line directly. </div><div class=""><br class=""></div><div class="">—Brian MacWhinney<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jul 11, 2018, at 9:48 AM, Leigh Ann Spell <<a href="mailto:contact@uscaphasialab.com" class="">contact@uscaphasialab.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><span style="font-size:11pt" class="">In a language sample we are
analyzing, CHAT/CLAN is counting “crack” as a noun and not a verb in a description of picture showing a boy breaking a window. The participant is obviously using it as a verb without
the morphological marker “boy crack the window” but CHAT/CLAN seems to be
coding that as a noun each time she uses it as a verb. Any ideas about how to make CHAT/CLAN
count this as a verb in the analysis? Thanks!<span class=""></span></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><span style="font-size:11pt" class="">Leigh Ann Spell</span></div>
<div class=""><br class=""></div>-- <br class=""><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class="">Aphasia Lab - University of South Carolina</div></div>
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