Class PcfgParser

Given a syntactic category, generates a representation that will be used by the model. The result should be a string and must uniquely identify all of the features of the category that the model should distinguish.

If base_category is given, it may be used as a base to compare the category to. In this case, observations of generated categories always take their parent as a base category and syntactic pitches are all relative to it.

If base_category is not given, the category itself will be considered the base category.

Returns a version of the Chord object that's relative to the base pitch of the category. If no category is given, the chord returned will be rooted at I (i.e. relative to itself).

rule_short_names

Value:

{'appb': ('application', {'dir': 'backward'}), 'appf': ('application', {'dir': 'forward'}), 'compb': ('composition', {'dir': 'backward'}), 'compf': ('composition', {'dir': 'forward'}), 'cont': ('development', {}), 'coord': ('coordination', {})}