Human Behavioral Benchmarking: Numeric Magnitude Comparison Effects in Large Language Models

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Hauptverfasser: Shah, Raj Sanjay, Marupudi, Vijay, Koenen, Reba, Bhardwaj, Khushi, Varma, Sashank
Format: Preprint
Veröffentlicht: 2023
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author Shah, Raj Sanjay
Marupudi, Vijay
Koenen, Reba
Bhardwaj, Khushi
Varma, Sashank
author_facet Shah, Raj Sanjay
Marupudi, Vijay
Koenen, Reba
Bhardwaj, Khushi
Varma, Sashank
contents Large Language Models (LLMs) do not differentially represent numbers, which are pervasive in text. In contrast, neuroscience research has identified distinct neural representations for numbers and words. In this work, we investigate how well popular LLMs capture the magnitudes of numbers (e.g., that $4 < 5$) from a behavioral lens. Prior research on the representational capabilities of LLMs evaluates whether they show human-level performance, for instance, high overall accuracy on standard benchmarks. Here, we ask a different question, one inspired by cognitive science: How closely do the number representations of LLMscorrespond to those of human language users, who typically demonstrate the distance, size, and ratio effects? We depend on a linking hypothesis to map the similarities among the model embeddings of number words and digits to human response times. The results reveal surprisingly human-like representations across language models of different architectures, despite the absence of the neural circuitry that directly supports these representations in the human brain. This research shows the utility of understanding LLMs using behavioral benchmarks and points the way to future work on the number representations of LLMs and their cognitive plausibility.
format Preprint
id arxiv_https___arxiv_org_abs_2305_10782
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Human Behavioral Benchmarking: Numeric Magnitude Comparison Effects in Large Language Models
Shah, Raj Sanjay
Marupudi, Vijay
Koenen, Reba
Bhardwaj, Khushi
Varma, Sashank
Artificial Intelligence
Large Language Models (LLMs) do not differentially represent numbers, which are pervasive in text. In contrast, neuroscience research has identified distinct neural representations for numbers and words. In this work, we investigate how well popular LLMs capture the magnitudes of numbers (e.g., that $4 < 5$) from a behavioral lens. Prior research on the representational capabilities of LLMs evaluates whether they show human-level performance, for instance, high overall accuracy on standard benchmarks. Here, we ask a different question, one inspired by cognitive science: How closely do the number representations of LLMscorrespond to those of human language users, who typically demonstrate the distance, size, and ratio effects? We depend on a linking hypothesis to map the similarities among the model embeddings of number words and digits to human response times. The results reveal surprisingly human-like representations across language models of different architectures, despite the absence of the neural circuitry that directly supports these representations in the human brain. This research shows the utility of understanding LLMs using behavioral benchmarks and points the way to future work on the number representations of LLMs and their cognitive plausibility.
title Human Behavioral Benchmarking: Numeric Magnitude Comparison Effects in Large Language Models
topic Artificial Intelligence
url https://arxiv.org/abs/2305.10782