Density Matrices for Metaphor Understanding

arXiv:2408.11846 · cs.CL · Submitted 2024-08-12 · Read on arXiv

cs.CL

Submitted: 2024-08-12

Updated: 2024-08-12

Comments: In Proceedings QPL 2024, arXiv:2408.05113

Journal ref: EPTCS 406, 2024, pp. 197-215

DOI: 10.4204/EPTCS.406.9

License: http://creativecommons.org/licenses/by/4.0/

The gist: In physics, density matrices are used to represent mixed states, i.e.

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Abstract

In physics, density matrices are used to represent mixed states, i.e. probabilistic mixtures of pure states. This concept has previously been used to model lexical ambiguity. In this paper, we consider metaphor as a type of lexical ambiguity, and examine whether metaphorical meaning can be effectively modelled using mixtures of word senses. We find that modelling metaphor is significantly more difficult than other kinds of lexical ambiguity, but that our best-performing density matrix method outperforms simple baselines as well as some neural language models.

Density Matrices for Metaphor Understanding

Terminology

Abstract

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