Metric: Type of grammar used -- Method: Specification by developer -- Measurement: The type of grammar used should specify which of the formalisms (e.g., lexical functional grammar(LFG), generalized phrase structure grammar (GPSG)) it conforms to and any adaptations needed.
Metric: Grammatical complexity -- Method: Analysis of grammar reported by developer -- Measurement: Analyzed complexity in order of magnitude measures per number of input tokens
Metric: Grammatical coverage -- Method: (a) Analysis of grammar reported by developer -- Measurement: (a) Analyzed coverage reported in terms of linguistic constructs covered
Method: (b) Test grammatical coverage using test suites -- Measurement: (b) Number and type of linguistic constructs covered in test suite