A Formal Characterization of Fuzzy Degrees of Grammaticality for Natural Language

Identifier:  TDX:2996

Handle: https://hdl.handle.net/20.500.11797/TDX2996

Authors:  Torrens Urrutia, Adrià

Abstract:
In this dissertation., we can find a new system which formally characterizes the fuzzy degrees of grammaticality in natural language. It proposes the basis of a fuzzy grammar, its features, fuzzy and evaluative formulas to calculate the values of grammaticality, and it provides a proof-of-concept of a Fuzzy Property Grammar for the syntax of the Spanish. We recognize a grammar as a system which both produces and recognizes inputs. Besides, we claim that the grammar is a compilation of linguistic constraints which defines the linguistic competence of a speaker. Such an input which violates the constraints of a grammar, it will be associated with the degree of grammaticality concerning to that grammar specific grammar. Therefore, the degree of grammaticality is understood as a vague object which can take into account degrees of membership regarding a linguistic input. I In order to explain that, a new system is proposed from the combination of a Property Grammar from Blache, (2016) and the Fuzzy Natural Logic tools from Novák (2015). This new approach allows us to: 1) provide a fuzzy grammar for dealing with degrees of grammaticality; 2) a framework for defining borderline constraints and categories regarding a grammar; 3) defining grammaticality taking into account linguistic competence (not performance).