End-to-end automatic speech recognition (ASR) and large language models, such as Whisper and GPT-2, have recently been scaled to use vast amounts of training data. Despite the large amount of training data, infrequent content words that occur in a particular task may still exhibit poor ASR performance, with contextual biasing a possible remedy. This paper investigates the effectiveness of neural contextual biasing for Whisper combined with GPT-2. Specifically, this paper proposes integrating an adapted tree-constrained pointer generator (TCPGen) component for Whisper and a dedicated training scheme to dynamically adjust the final output without modifying any Whisper model parameters. Experiments across three datasets show a considerable reduction in errors on biasing words with a biasing list of 1000 words. Contextual biasing was more effective when applied to domain-specific data and can boost the performance of Whisper and GPT-2 without losing their generality.

本文研究了对Whisper和GPT-2进行神经语境偏置的有效性，发现使用特定的偏置列表来帮助Whisper和GPT-2减少数据集中不频繁且性能差的单词可以显著降低错误率。在应用于特定领域的数据时，语境偏置更加有效，并可以提高Whisper和GPT-2的性能，同时不失其一般性。

使用Whisper和GPT-2技术进行情境偏见调整是否仍然有效？