[Ligncse256] More HW3 questions

[Il-Young Son]

i'll be starting this weekend.. still working on HW2 eek!  but, we'll  
discuss soon.



On Mar 5, 2008, at 4:26 PM, Ben Cipollini wrote:

> If anybody's started on HW3 and has comments / answers to these  
> questions, it would be appreciated.  I'm going to try and move ahead  
> later this evening.
>
> Thanks!
> Ben
> ----- Original Message -----
> From: Ben Cipollini
> To: ligncse256 at ling.ucsd.edu
> Sent: Saturday, March 01, 2008 9:00 AM
> Subject: [Ligncse256] More HW3 questions
>
> Hey all,
>
> Some more questions from HW3:
>
> 1. Does anybody get performance on the BaselineParser like in the HW  
> (F=30%)?  I'm getting F1=16.43% on validation  and 16.16% on test  
> trees.
>
> 2. Is there any purpose to constructing a Grammar object?  After  
> being constructed, it doesn't seem used by the BaselineParser class  
> at all.  Commenting it out seems to have no effect.
>
> 3. Did we cover "Agenda-Based" parsers in class?  If so, did we call  
> them agenda-based parsers?  If not, what did we call them?
>
> 4. You might think the BaselineParser would do better if it used  
> HW2's HMM Tagger instead of the "unigram" tagger (which I think is  
> really just another version of HW2's most frequent scorer +  greedy  
> decoder trellis combo).
>
> Tagging performance (overall/unknown):
>   HW2 HMM      perf: 95.8%/65%
>   HW  unigram  perf: 92%/40%
>
> Instead I got a drop in performance from 15% to under 5%.  Was  
> anybody else able to hook up their HW2 tagger code to HW3?  If so,  
> what stats do you see?
>
>
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