IPSyn question

[Brian MacWhinney]

Fay,
     I haven't done much PSyn coding myself, but I was closely  
involved with Kenji Sagae's computerized
formulation of IPSyn.  In the process of building his automatic  
IPSyn, Kenji received coded IPSyn's from three people who we
took as the "gold standard."  I would not want to divulge in public  
which of the three coders ended up with the
score closest to that of the program, but perhaps I can say that, in  
the end, the program and the humans were
all getting close to 95% accuracy.  Now, the nice thing about the  
program is that Kenji could actually check his
code to see how it is programmed for this.  This is not to say that  
the program is "right" but at least one can
look at the code and see what it does all the time.  Once these fine  
details of IPSyn coding get resolved in the community,
they can then be locked in to the program.

--Brian MacWhinney

On Oct 12, 2007, at 12:49 PM, Fay Wouk wrote:

> Could someone with experience using Scarbourough's Index of  
> Productive Syntax answer a question for me?
>
> The V6 level is Auxiliary be, do have  in VP. Would utterances  
> which have contracted is ('s) as their verb be acceptable here? I  
> note that they can only be second exemplars for V4, so I'm  
> wondering if they can also only be second exemplars for V6.  
> Further, would it make any difference if the child had already been  
> credited with 2 points at V4, for having produced 's as a second  
> exemplar, and 'm as first exemplar?
>
> thanks,
> Fay
>
> Dr. Fay Wouk
> Senior Lecturer in Linguistics
> Dept. of Applied Language Studies and Linguistics
> University of Auckland
>
>