Scene Abstraction for Lexical Semantics: Structured Representations of Situated Meaning

· Source: Computation and Language · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Data Science & Analytics · Depth: Expert, quick

Summary

Scene Abstraction is a novel framework designed to create structured representations of the interpretive scenes associated with words across various usage contexts. This framework addresses the implicit situated dimensions of lexical meaning, such as the distinct situations and affective associations evoked by words like "coffee" versus "tea." Each scene is composed of a Contextual Scene, detailing Events, Entities, and Setting, and an expression-centered Expression Profile, which includes Engaged events, Generalizable properties, and Evoked emotions. The framework is operationalized through few-shot prompting of a large language model. Key contributions include the structured representation framework itself, the COCA-Scenes dataset comprising 520 usage instances for 26 keywords, and empirical validation. Experiments show scenes are reliably identifiable by human observers with 82.4% accuracy, an 11.8 percentage point improvement over text-only embeddings, and that scene profiles align more closely with human interpretation than ATOMIC-based alternatives, demonstrating an 86.4% preference across three semantic dimensions.

Key takeaway

For NLP Engineers developing advanced semantic models, consider integrating "Scene Abstraction" to capture the situated and affective dimensions of word meaning. Your current text-only embeddings may miss crucial contextual nuances, as evidenced by the 11.8 percentage point accuracy gain over traditional methods. By adopting structured scene representations, you can achieve better alignment with human interpretation, improving model performance in tasks requiring deep contextual understanding. Explore few-shot prompting with large language models to operationalize this framework effectively.

Key insights

"Scene Abstraction" provides a structured framework to represent the situated, interpretive dimensions of lexical meaning using LLMs.

Principles

Method

The framework operationalizes scene identification by defining Contextual Scenes (Events, Entities, Setting) and Expression Profiles (Engaged events, Generalizable properties, Evoked emotions), then uses few-shot prompting of a large language model.

In practice

Topics

Best for: Research Scientist, AI Scientist, NLP Engineer

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Editorial summary, takeaway, and curation by AIssential. Original article published by Computation and Language.