Shallow syntactic function labeller

This is Google Summer of Code 2017 project

A repository for the project: https://github.com/deltamachine/shallow_syntactic_function_labeller

Architecture

1. The labeller takes a string in Apertium stream format with morphological tags:

^vino<n><m><sg>$ = INPUT

2. Parses it into a sequence of morphological tags:

<n><m><sg>

3. Restores the model for this language (which is in the same directory and looks like .json file or like a .pkl file)

4. The algorithm analyzes the string and gives a sequence of syntactic tags as an output.

<@nsubj>

5. The labeller applies given labels to the original string:

^vino<n><m><sg><@nsubj>$ = OUTPUT

So, in the end there will be a module itself and a file with a model.

Workplan

Week	Dates	To do
1	30th May — 5th June	Handling discrepancies between Apertium sme-nob and Sami corpus tagsets Writing a script for parsing Sami corpus
2	6th June — 12th June	Writing a script for replacing UD tags with suitable Apertium tags and parsing UD-tree into a dataset
3	13th June — 19th June
4	20th June — 26th June
First evaluation	Ready-to-use datasets
5	27th June — 3rd July	Building the model
6	4th July — 10th July	Training the classifier Evaluating the quality of the prototype
7	11th July — 17th July	Further training Working on improvements of the model
8	18th July — 24th July	Final testing Writing a script, which applies labels to the original string in Apertium stream format
Second evaluation	Well-trained model at least for North Sami
9	25th July — 31th July	Collecting all parts of the labeller together Adding machine-learned module instead of the syntax labelling part of sme-nob CG module to test it
10	1st August — 7th August	Adding machine-learned module instead of the syntax labelling part of sme-nob CG module to test it
11	8th August — 14th August	Testing Fixing bugs
12	15th August — 21th August	Cleaning up the code Writing documentation
Final evaluation	The prototype shallow syntactic function labeller.

Progress

Week 1: Datasets for North Sami were created.

• Some tags in the original corpus were replaced with Apertium North Sami tags (like here: https://victorio.uit.no/langtech/trunk/langs/sme/tools/mt/apertium/tagsets/modify-tags.regex).
• Some tags were removed from the original corpus as irrelevant: ABBR, ACR, Allegro, G3, G7, <ext>, Foc_, Qst.
• In cases when there were two lines with analysis for one word, only one analysis has been left.
• Information about derivation was removed too.
• Special "fake" syntactical functions were added for CLB and PUNCT: @CLB and @PUNCT.
• Two types of datasets were created: the first type contains tags for punctuation and clause boundaries and the second does not.