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chapter 4 tasks further explained

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Arianna Masciolini
2022-04-20 11:25:39 +02:00
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@@ -85,29 +85,24 @@ You will need Haskell and GF libraries to build gfud, and LaTeX to show the pdf.
## Chapter 4: phrase structure analysis ## Chapter 4: phrase structure analysis
1. Construct phrase structure trees for some of the sentences in the corpus used in Chapter 3, both for English and your chosen language. ### Prerequisites: get `gf-ud` to work
There are multiple ways to use `gf-ud`:
- using the version that is installed on eduserv
- installing a pre-compiled executable, available for Mac and Ubuntu machines at http://www.grammaticalframework.org/~aarne/software/
- compiling the source code, available at https://github.com/GrammaticalFramework/gf-ud. `gf-ud` can be built:
- with `make` provided that you have the GHC Haskell compiler and the gf-core libraries (available at https://github.com/GrammaticalFramework/gf-core) installed
- with the Haskell Stack tool, by running `stack install`. This will install all the necessary dependency automatically.
2. Test the grammar ### Tasks
1. Construct (by hand) phrase structure trees for some of the sentences in the corpus used in Chapter 3, both for English and your chosen language.
https://github.com/GrammaticalFramework/gf-ud/blob/master/grammars/English.dbnf 2. Test the grammar at
on last week's corpus, both for English and your own language. https://github.com/GrammaticalFramework/gf-ud/blob/master/grammars/English.dbnf
3. Modify the grammar to suit your language and test it on some of the UD treebanks by using `gf-ud eval`.
The gf-ud program can be found in executable versions (once gunzipped) in
http://www.grammaticalframework.org/~aarne/software/
The source code of gf-ud can be found in
https://github.com/GrammaticalFramework/gf-ud
It can be built with `make` if you have Haskell and also have built the gf-core libraries:
https://github.com/GrammaticalFramework/gf-core
This will not be needed if you can use one of the ready-made libraries.
on last week's corpus, both for English and your own language.
In practice, this means:
- running `gf-ud`'s `dbnf` command on (possibly POS-tagged) versions of the sentences in Chapter 3's corpus.
- comparing the CoNNL-U and parse trees obtained in this way with, respectively, your hand-drawn parse trees and the CoNNL-U trees from Chapter 3. Parse tree comparison can be qualitative, while CoNNL-U trees are to be compared quantitatively via `gf-ud eval`.
3. Modify the grammar to suit your language and test it on some of the UD treebanks by using `gf-ud eval`. Try to obtain a `udScore` above 0.60. You are welcome to explain the changes you make.