| # Summary | |
| The UD Tamil treebank is based on the Tamil Dependency Treebank created at the | |
| Charles University in Prague by Loganathan Ramasamy. | |
| # Introduction | |
| The treebank was part of | |
| HamleDT, a collection of treebanks converted to the Prague dependency style | |
| (since 2011). Later versions of HamleDT added a conversion to the Stanford | |
| dependencies (2014) and to Universal Dependencies (HamleDT 3.0, 2015). The | |
| first release of Universal Dependencies that includes this treebank is UD v1.2 | |
| in November 2015. It is essentially the HamleDT conversion but the data is not | |
| identical to HamleDT 3.0 because the conversion procedure has been further | |
| improved. | |
| ## References: | |
| * [TamilTB](http://ufal.mff.cuni.cz/~ramasamy/tamiltb/0.1/) | |
| * [HamleDT](http://ufal.mff.cuni.cz/hamledt) | |
| * [Treex](http://ufal.mff.cuni.cz/treex) is the software used for conversion | |
| * [Interset](http://ufal.mff.cuni.cz/interset) was used to convert POS tags and features | |
| * Loganathan Ramasamy, Zdeněk Žabokrtský. 2012. | |
| [Prague Dependency Style Treebank for Tamil](http://www.lrec-conf.org/proceedings/lrec2012/summaries/456.html). | |
| In: *Proceedings of Eighth International Conference on Language Resources and Evaluation (LREC 2012),* | |
| İstanbul, Turkey, ISBN 978-2-9517408-7-7, pp. 1888–1894. | |
| <pre> | |
| @inproceedings{ta, | |
| author = {Ramasamy, Loganathan and \v{Z}abokrtsk\'{y}, Zden\v{e}k}, | |
| year = {2012}, | |
| title = {Prague Dependency Style Treebank for {Tamil}}, | |
| booktitle = {Proceedings of Eighth International Conference on Language Resources and Evaluation ({LREC} 2012)}, | |
| address = {\.{I}stanbul, Turkey}, | |
| editor = {Nicoletta Calzolari (Conference Chair) and Khalid Choukri and Thierry Declerck and Mehmet Uğur Doğan and Bente Maegaard and Joseph Mariani and Asuncion Moreno and Jan Odijk and Stelios Piperidis}, | |
| isbn = {978-2-9517408-7-7}, | |
| pages = {1888--1894}, | |
| url = {http://www.lrec-conf.org/proceedings/lrec2012/summaries/456.html} | |
| } | |
| </pre> | |
| # Source of annotations | |
| This table summarizes the origins and checking of the various columns of the CoNLL-U data. | |
| | Column | Status | | |
| | ------ | ------ | | |
| | ID | Sentence segmentation and tokenization (including cutting off certain suffixes that constitute independent syntactic words) was automatically done and then hand-corrected. | | |
| | FORM | Identical to TamilTB form. | | |
| | LEMMA | Gold (preprocessed and then manually corrected). | | |
| | UPOSTAG | Converted automatically from XPOSTAG (via [Interset](https://ufal.mff.cuni.cz/interset)). | | |
| | XPOSTAG | Gold (preprocessed and then manually corrected). | | |
| | FEATS | Converted automatically from XPOSTAG (via Interset). | | |
| | HEAD | Original TamilTB annotation is manual (preprocessed by a rule-based parser and then manually corrected). Automatic conversion to UD; human checking of patterns revealed by automatic consistency tests. | | |
| | DEPREL | Original TamilTB annotation is manual (preprocessed by a rule-based parser and then manually corrected). Automatic conversion to UD; human checking of patterns revealed by automatic consistency tests. | | |
| | DEPS | — (currently unused) | | |
| | MISC | Information about token spacing restored using heuristics. Mapping between multi-word tokens and syntactic words verified against the source text. | | |
| # Changelog | |
| * 2020-05-15 v2.6 | |
| * Added enhanced relations with case information. | |
| * 2019-05-15 v2.4 | |
| * Fixed some annotation errors in the original treebank, re-run the conversion. | |
| * Dative and instrumental objects are now treated as oblique arguments. | |
| * 2018-04-15 v2.2 | |
| * Repository renamed from UD_Tamil to UD_Tamil-TTB. | |
| * Added enhanced representation of dependencies propagated across coordination. | |
| The distinction of shared and private dependents is derived deterministically from the original Prague annotation. | |
| * 2017-03-01 v2.0 | |
| * Converted to UD v2 guidelines. | |
| * Reconsidered PRON vs. DET distinction. | |
| * Improved advmod vs. obl distinction. | |
| * 2016-05-15 v1.3 | |
| * Added Latin transliteration of lemmas and full sentences. | |
| * Added orthographic words (surface tokens) and their mapping to nodes. | |
| * Improved conversion of AuxY. | |
| <pre> | |
| === Machine-readable metadata (DO NOT REMOVE!) ================================ | |
| Data available since: UD v1.2 | |
| License: CC BY-NC-SA 3.0 | |
| Includes text: yes | |
| Genre: news | |
| Lemmas: converted from manual | |
| UPOS: converted from manual | |
| XPOS: manual native | |
| Features: converted from manual | |
| Relations: converted from manual | |
| Contributors: Ramasamy, Loganathan; Zeman, Daniel | |
| Contributing: elsewhere | |
| Contact: zeman@ufal.mff.cuni.cz | |
| =============================================================================== | |
| </pre> | |