SSPR (Semantics-driven Syntactic Parser for Romanian) is a neural network ensemble parser developed for Romanian (a Python 3.5 application based on the Microsoft Cognitive Toolkit 2.0 Python API) that combines the parsing decisions of a varying number (in our experiments, 3) of other parsers (MALT, RGB and MATE), using information from additional lexical, morpho-syntactic and semantic features. SSPR outperforms the best individual parser (MATE in our case) with 1.6% LAS points and it is in the same class with the top 5 Romanian performers at the CONLL 2017 dependency parsing shared task. The train and test sets were extracted from a Romanian dependency treebank we developed and validated in the Universal Dependencies format. The treebank, used in the CONLL 2017 Romanian track as well, is open licenced; the parser is available on request.
@InProceedings{ION18.569, author = {Radu Ion and Elena Irimia and Verginica Barbu Mititelu}, title = "{Ensemble Romanian Dependency Parsing with Neural Networks}", booktitle = {Proceedings of the Eleventh International Conference on Language Resources and Evaluation (LREC 2018)}, year = {2018}, month = {May 7-12, 2018}, address = {Miyazaki, Japan}, editor = {Nicoletta Calzolari (Conference chair) and Khalid Choukri and Christopher Cieri and Thierry Declerck and Sara Goggi and Koiti Hasida and Hitoshi Isahara and Bente Maegaard and Joseph Mariani and Hélène Mazo and Asuncion Moreno and Jan Odijk and Stelios Piperidis and Takenobu Tokunaga}, publisher = {European Language Resources Association (ELRA)}, isbn = {979-10-95546-00-9}, language = {english} }
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