cat2ty

discopy.grammar.categorial.cat2ty(string)

Translate the string representation of a CCG category into DisCoPy.

A category is either an atom, a bracketed category or two categories around a slash, which associates to the left as in Steedman’s The Syntactic Process (2000). The features that CCGbank writes in square brackets, e.g. the [dcl] of S[dcl], are ignored: they refine an atom rather than change it.

Parameters:

string (str) – The string with slashes representing a CCG category.

Return type:

Ty

Example

>>> print(cat2ty(r"(S[dcl]\NP)/NP"))
((NP >> S) << NP)
>>> assert cat2ty(r"S\NP/NP") == cat2ty(r"(S\NP)/NP")
>>> assert cat2ty(r"(S\NP)\(S\NP)[conj]") == cat2ty(r"(S\NP)\(S\NP)")