The Ellogon Pattern Engine: Context-free Grammars over Annotations
Georgios Petasis · 2014
This paper presents the pattern engine that is offered by the Ellogon language engineering platform.This pattern engine allows the application of context-free grammars over annotations, which are metadata generated during the processing of documents by natural language tools.In addition, grammar development is aided by a graphical grammar editor, giving grammar authors the capability to test and debug grammars.