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Xiaohu Zhao

5 accepted papers

2026

Finding the Translation Switch: Discovering and Exploiting the Task-Initiation Features in LLMs

AAAI 2026technical

Large Language Models (LLMs) frequently exhibit strong translation abilities, even without task-specific fine-tuning. However, the internal mechanisms governing this innate capability remain largely opaque. To demystify this process, we leverage Sparse Autoencoders (SAEs) and introduce a novel frame

Cited by 0SourcePDFScholar
2023

CCSRD: Content-Centric Speech Representation Disentanglement Learning for End-to-End Speech Translation

EMNLP 2023long findings

Deep neural networks have demonstrated their capacity in extracting features from speech inputs. However, these features may include non-linguistic speech factors such as timbre and speaker identity, which are not directly related to translation. In this paper, we propose a content-centric speech r…

Cited by 0SourceScholar
2023

CKDST: Comprehensively and Effectively Distill Knowledge from Machine Translation to End-to-End Speech Translation

ACL 2023findings

Distilling knowledge from a high-resource task, e.g., machine translation, is an effective way to alleviate the data scarcity problem of end-to-end speech translation. However, previous works simply use the classical knowledge distillation that does not allow for adequate transfer of knowledge from…

2023

Towards a Deep Understanding of Multilingual End-to-End Speech Translation

EMNLP 2023long findings

In this paper, we employ Singular Value Canonical Correlation Analysis (SVCCA) to analyze representations learnt in a multilingual end-to-end speech translation model trained over 22 languages. SVCCA enables us to estimate representational similarity across languages and layers, enhancing our unders…

Cited by 0SourcecodeScholar
2022

TGEA 2.0: A Large-Scale Diagnostically Annotated Dataset with Benchmark Tasks for Text Generation of Pretrained Language Models

NeurIPS 2022accept

In order to diagnostically analyze and improve the capability of pretrained language models (PLMs) in text generation, we propose TGEA 2.0, to date the largest dataset built on machine-authored texts by PLMs with fine-grained semantic annotations on a wide variety of pathological generation errors.…