SLE 2008 SI paper:
Grammar Recovery from Parse Trees and Metrics-Guided Grammar Refactoring

Nicholas A. Kraft, Edward Duffy, Brian A. Malloy

DOI: 10.1109/TSE.2009.65
T5B: Language Description Analysis
- The work recovers and refactors a language grammar from an existing hard-coded parser and analyses the recovered grammar using grammar metrics.
T4C: Vertical Transformation
- Its methodology addresses recovery of an unavailable language artefact (the grammar) from existing implementations, which is an upwards vertical transformation.
T3A: Meta-languages
- Context-free grammars are the central meta-language artefact being reconstructed and manipulated.

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