| Title | The Ellogon Pattern Engine: Context-free Grammars over Annotations | 
  
  | Authors | Georgios Petasis | 
  
  | Abstract | 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. | 
  
  | Topics | Grammar and Syntax, Tools, Systems, Applications | 
  
  | Full paper  | The Ellogon Pattern Engine: Context-free Grammars over Annotations | 
  
  | Bibtex | @InProceedings{PETASIS14.1060, author =  {Georgios Petasis},
 title =  {The Ellogon Pattern Engine: Context-free Grammars over Annotations},
 booktitle =  {Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)},
 year =  {2014},
 month =  {may},
 date =  {26-31},
 address =  {Reykjavik, Iceland},
 editor =  {Nicoletta Calzolari (Conference Chair) and Khalid Choukri and Thierry Declerck and Hrafn Loftsson and Bente Maegaard and Joseph Mariani and Asuncion Moreno and Jan Odijk and Stelios Piperidis},
 publisher =  {European Language Resources Association (ELRA)},
 isbn =  {978-2-9517408-8-4},
 language =  {english}
 }
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