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Tatsuro Inaba

4 accepted papers

2025

How a Bilingual LM Becomes Bilingual: Tracing Internal Representations with Sparse Autoencoders

EMNLP 2025

This study explores how bilingual language models develop complex internal representations.We employ sparse autoencoders to analyze internal representations of bilingual language models with a focus on the effects of training steps, layers, and model sizes.Our analysis shows that language models fir

Cited by 0SourcePDFScholar
2025

Transformer Key-Value Memories Are Nearly as Interpretable as Sparse Autoencoders

NeurIPS 2025poster

Recent interpretability work on large language models (LLMs) has been increasingly dominated by a feature-discovery approach with the help of proxy modules. Then, the quality of features learned by, e.g., sparse auto-encoders (SAEs), is evaluated. This paradigm naturally raises a critical question:…

Cited by 0SourceScholar
2025

Weight-based Analysis of Detokenization in Language Models: Understanding the First Stage of Inference Without Inference

NAACL 2025findings

According to the stages-of-inference hypothesis, early layers of language models map their subword-tokenized input, which does not necessarily correspond to a linguistically meaningful segmentation, to more meaningful representations that form the model’s “inner vocabulary”.Prior analysis of this *d…

2023

MultiTool-CoT: GPT-3 Can Use Multiple External Tools with Chain of Thought Prompting

ACL 2023short

Large language models (LLMs) have achieved impressive performance on various reasoning tasks. To further improve the performance, we propose MultiTool-CoT, a novel framework that leverages chain-of-thought (CoT) prompting to incorporate multiple external tools, such as a calculator and a knowledge r…