1. Jan Odijk LREC Miyazaki 2018-05-10
GrETEL 4
Jan Odijk
LREC Miyazaki

2. Overview GrETEL 1,2,3 GrETEL 4 Illustration
Developers: Martijn van der Klis, Sheean Spoel, Gerson Foks (DH Lab)
Illustration

3. GrETEL 1,2,3 GrETEL: KU Leuven
Cooperation CLARIN-NL and CLARIN Flanders
GrETEL 2,3: extensions, improvements in other Flemish projects
Application for searching in a treebank
Treebank = text corpus in which each sentence has been assigned a syntactic structure
Syntactic structure is usually a tree
Core feature: example based querying

4. GrETEL 1,2,3
Treebanks:
LASSY-Small (1 m tokens, written language)
CGN (1 m tokens, spoken language)
(V3) SoNaR Treebank (>500 m tokens)
V1:
V2:
V3:

5. GrETEL 4 GrETEL 4: UU Utrecht
In CLARIAH and UU-internal AnnCor project
New functionality that KU Leuven could not add:
Upload a user’s own corpus incl. metadata
Search in the user’s own automatically parsed corpus
Analysis of search results combined with metadata
Better support for Xpath Queries
Improved interface functionality
V4 (alpha!)

6. Illustration Upload Corpus
Plain text or CHILDES CHAT
TEI and FoLIA to follow
CHAT Utterances are cleaned and metadata uploaded:
knor knor [!= pigsound], ik heb honger 
knor knor, ik heb honger

7. Corpus Upload

8. Corpus Overview

9. Corpus Details

10. Query Example
Constructions with 3 bare verbs in the Dutch CHILDES Van Kampen Laura Corpus
Example sentence:
Hij zal dat willen doen

11. Example Sentence

12. Parse Tree

13. Select Parts

14. Query Tree

15. Select Treebank

16. Query
and and and and and

17. Example: Query Output

18. Utterance Details

19. Result Statistics

20. Analysis

21. Some Results 3 verbs: 2 verbs: 335 hits found
313 by adults, 12 by child
4 by child do not occur among adults
8 others are not in most frequent of adults
Child examples as of month 43 (3;7)
2 verbs:
6,645 in total, 1,363 uttered by child
as of month 23 (1;11).

22. Concluding remarks GrETEL is a very user-friendly search engine
Enables searching for constructions
Enables search for disambiguated words
Utrecht extensions
Enable searching in your own research corpus
Enable detailed analysis of search results

23. Concluding remarks User-friendliness Automatic parsing
Also implies limitations!
Automatic parsing
Is not flawless
Requires additional checks before conclusions can be reliably drawn
Try it out!
Even if it is still under development

24. Thanks for your attention

25. More information http://portal.clarin.nl, http://www.clariah.nl
Recorded lecture on GrETEL:
Educational Package:
Augustinus, L, Vandeghinste, V, Schuurman, I and Van Eynde, F GrETEL: A Tool for Example-Based Treebank Mining. In: Odijk, J and van Hessen, A. (eds.) CLARIN in the Low Countries, Pp. 269–280. London: Ubiquity Press. DOI: License: CC-BY 4.0
Odijk, J., van der Klis, M., and Spoel, S. (2018). Extensions to the GrETEL treebank query application. Proceedings of the 16th International Workshop on Treebanks and Linguistic Theories (TLT16) pp 46-55, Prague.
Odijk & Van Hessen (eds.) CLARIN in the Low Countries. London: Ubiquity Press. (Open Access). DOI: