activity
20242026
collaborators

7 papers

eess.AS2026

Factorized Delayed Streams Modeling for LLM-based Streaming ASR

Tatsunari Takagi, Kai Washizaki, Atsushi Kojima +3

Delayed Streams Modeling (DSM) enables LLM-based streaming automatic speech recognition (ASR) by aligning acoustic and text streams on a common timeline. DSM adds the padding token…

eess.AS2026

Evaluating Japanese Dialect Robustness Across Speech and Text-based Large Language Models

Tomoya Mizumoto, Yusuke Fujita, Hao Shi +3

Dialogue systems based on large language models (LLMs) have advanced significantly in recent years. However, dialectal variation remains a major challenge, particularly for systems…

cs.CL2025

Serialized Output Prompting for Large Language Model-based Multi-Talker Speech Recognition

Hao Shi, Yusuke Fujita, Tomoya Mizumoto +3

Prompts are crucial for task definition and for improving the performance of large language models (LLM)-based systems. However, existing LLM-based multi-talker (MT) automatic spee…

eess.AS2025

AC/DC: LLM-based Audio Comprehension via Dialogue Continuation

Yusuke Fujita, Tomoya Mizumoto, Atsushi Kojima +2

We propose an instruction-following audio comprehension model that leverages the dialogue continuation ability of large language models (LLMs). Instead of directly generating targe…

cs.SD2025

OWSM-Biasing: Contextualizing Open Whisper-Style Speech Models for Automatic Speech Recognition with Dynamic Vocabulary

Yui Sudo, Yusuke Fujita, Atsushi Kojima +2

Speech foundation models (SFMs), such as Open Whisper-Style Speech Models (OWSM), are trained on massive datasets to achieve accurate automatic speech recognition. However, even SF…

cs.CL2024

Self-Supervised Learning for Multi-Channel Neural Transducer

Atsushi Kojima

Self-supervised learning, such as with the wav2vec 2.0 framework significantly improves the accuracy of end-to-end automatic speech recognition (ASR). Wav2vec 2.0 has been applied…

cs.CL2024

Intermediate direct preference optimization

Atsushi Kojima

We propose the intermediate direct preference optimization (DPO) method to calculate the DPO loss at selected intermediate layers as an auxiliary loss for finetuning large language…