Class GrammarCategory

source code

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  Category --+
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            GrammarCategory

A class of Category for use in parsing.

The name of the head feature in a GrammarCategory is pos (for "part of speech").

In addition, GrammarCategories are displayed and parse differently, to be consistent with NLP teaching materials: the value of the / feature can be written with a slash after the right bracket, so that the string representation looks like: head[...]/value.

Every GrammarCategory has a / feature implicitly present; if it is not explicitly written, it has the value False. This is so that "slashed" features cannot unify with "unslashed" ones.

An example of a GrammarCategory is VP[+fin]/NP, for a verb phrase that is finite and has an omitted noun phrase inside it.

Instance Methods

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Inherited from Category: __cmp__, __div__, __eq__, __getitem__, __hash__, __init__, __ne__, __repr__, __setitem__, __str__, copy, feature_names, freeze, frozen, get, has_feature, has_key, head, items, keys, remove_unbound_vars, substitute_bindings, symbol, values