Advances in Using Grammars with Latent Annotations for Discontinuous Parsing
| Autor: | Kilian Gebhardt |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Parsing
Grammar Computer science business.industry media_common.quotation_subject Probabilistic logic 02 engineering and technology computer.software_genre Rotation formalisms in three dimensions 03 medical and health sciences TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES 0302 clinical medicine Discriminative model Rule-based machine translation Terminal and nonterminal symbols 030221 ophthalmology & optometry 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Artificial intelligence Rewriting business computer Natural language processing media_common |
| Zdroj: | IWPT 2020 |
| DOI: | 10.18653/v1/2020.iwpt-1.9 |
| Popis: | We present new experiments that transfer techniques from Probabilistic Context-free Grammars with Latent Annotations (PCFG-LA) to two grammar formalisms for discontinuous parsing: linear context-free rewriting systems and hybrid grammars. In particular, Dirichlet priors during EM training, ensemble models, and a new nonterminal scheme for hybrid grammars are evaluated. We find that our grammars are more accurate than previous approaches based on discontinuous grammar formalisms and early instances of the discriminative models but inferior to recent discriminative parsers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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