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July 14, 2008 Toward a Universal Underspecified
 

Summary: July 14, 2008
5
Toward a Universal Underspecified
Semantic Representation
MEHDI HAFEZI MANSHADI, JAMES F. ALLEN, MARY SWIFT
Abstract
We define Canonical Form Minimal Recursion Semantics (CF-MRS) and prove that
all the well-formed MRS structures generated by the MRS semantic composition algo-
rithm are in this form. We prove that the qeq relationships are equivalent to outscoping
relations when MRS structures are in this form. This result fills the gap between some
underspecification formalisms and motivates defining a Canonical Form Underspecified
Representation (CF-UR) which brings those underspecification formalisms together.
Keywords UNDERSPECIFICATION, SEMANTIC FORMALISMS, MINIMAL RE-
CURSION SEMANTICS
5.1 Introduction
Several underspecification formalisms in semantic representation have been
proposed during the last two decades, such as Quasi Logical Form (Alshawi
and Crouch 1992), Hole Semantics (Bos 1996 and 2002), Minimal Recursion
Semantics (Copestake et al. 2001), and Dominance Constraints (Egg et al.
2001). Recently there have been some efforts to bring these formalisms under

  

Source: Allen, James F. - Department of Computer Science, University of Rochester
Swift, Mary - Department of Computer Science, University of Rochester

 

Collections: Computer Technologies and Information Sciences