syntactic measures for a growth curve analysis

[Leonid Spektor]

Yuriko and Brian.

I apologize for sending the same email again, but there was a typo in my original email.

The +s"* *" option doesn't work because kwal and most of the CLAN commands are word oriented. This means that they do not know about space characters between words.

We have implemented a different way to achieve the same result. Here is the command that will do the trick:

maxwd +x2 +d1 +g2 +c50000 +f *.cha

That is assuming that there are fewer than 50,000 utterances per file. If your have more, the just increase that number.
After that run command:

mlu -t%mor *.mxwrd.cex


Leonid.



On Feb 15, 2012, at 22:11, Brian MacWhinney wrote:

> Dear Yuriko,
>      This is a recurring question for child language researchers.  The idea of calculating
> MLU based on the exclusion of all one-morpheme utterances is a nice one.  In theory, I would have
> thought that I could get KWAL to search for all utterances that contained a space using a switch such
> as +s"* *"  and then send that all to a new file or to MLU, but this doesn't work.  Maybe Leonid knows how to 
> get this to work.
>   Another (probably more useful) approach is to use DSS to measure later syntactic growth.
> 
> -- Brian
> 
> On Feb 15, 2012, at 4:39 PM, Yuriko Oshima-Takane wrote:
> 
>> Hi  Brian and colleagues,
>>  
>> We would like to do a growth curve analysis on some syntactic measures
>> using the functional data analysis. MLU is not a good syntactic measure
>> for this analysis because it sometimes goes down like 1.56 -> 2.20 ->1.60 ->2.15.
>> We are wondering if MLUs excluding one morpheme utterances could be
>> used for this analysis.  But we are not sure how to exclude all the one
>> morpheme utterances from the transcripts and calculate MLUs.  Could you
>> please let us know how to do that? Also if you know any other syntactic
>> measure which would be good for a growth curve analysis, please let us know.
>> Thanks.
>>  
>> Yuriko
>>  
>> 
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