[Ligncse256] More HW3 questions
Ben Cipollini
bcipolli at cogsci.ucsd.edu
Sat Mar 1 09:00:34 PST 2008
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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