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Análisis sintáctico estocástico y paralelismo

Authors: Barcala Rodríguez, Francisco Mario; Sacristán Agulló, Oscar; Graña Gil, Jorge;

Análisis sintáctico estocástico y paralelismo

Abstract

Los algoritmos de análisis sintáctico tipo CYK presentan una naturaleza intrínsecamente paralela: existen muchas celdas de la tabla de análisis que pueden ser calculadas simultáneamente. En este trabajo se realiza un estudio sobre cual debe ser la técnica de paralelismo adecuada para obtener un rendimiento óptimo del algoritmo CYK extendido, un algoritmo de análisis sintáctico estocástico que mantiene el mismo nivel de expresividad de la gramática original y hace más viables las posteriores tareas de parsing robusto. Se consideran dos métodos de paralelización: memoria distribuida y memoria compartida. Los excelentes resultados obtenidos con el segundo de ellos convierten a este algoritmo en una alternativa que podría competir con otras técnicas de parsing mucho más eficientes a priori.

Este trabajo ha sido parcialmente financiado por el proyecto 1FD97-0047-C04-02 del FEDER y por el proyecto PGIDT99XI10502B de la Xunta de Galicia

Keywords

Parsing, Análisis sintáctico estocástico, Algoritmo CYK, Memoria distribuida, Paralelismo, Memoria compartida

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green