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Yikun Lei

9 accepted papers

2025

Understanding the RoPE Extensions of Long-Context LLMs: An Attention Perspective

COLING 2025main

Enabling LLMs to handle lengthy context is currently a research hotspot. Most LLMs are built upon rotary position embedding (RoPE), a popular position encoding method. Therefore, a prominent path is to extrapolate the RoPE trained on comparably short texts to far longer texts. A heavy bunch of effor…

Cited by 7SourcePDFScholar
2025

ZigZagKV: Dynamic KV Cache Compression for Long-context Modeling based on Layer Uncertainty

COLING 2025main

Large Language models (LLMs) have become a research hotspot. To accelerate the inference of LLMs, storing computed caches in memory has become the standard technique. However, as the inference length increases, growing KV caches might lead to out-of-memory issues. Many existing methods address this…

Cited by 0SourcePDFScholar
2024

FuxiTranyu: A Multilingual Large Language Model Trained with Balanced Data

EMNLP 2024industry

Large language models (LLMs) have demonstrated prowess in a wide range of tasks. However, many LLMs exhibit significant performance discrepancies between high- and low-resource languages. To mitigate this challenge, we present FuxiTranyu, an open-source multilingual LLM, which is designed to satisfy…

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

PEIT: Bridging the Modality Gap with Pre-trained Models for End-to-End Image Translation

ACL 2023long

Image translation is a task that translates an image containing text in the source language to the target language. One major challenge with image translation is the modality gap between visual text inputs and textual inputs/outputs of machine translation (MT). In this paper, we propose PEIT, an end…

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

CoDoNMT: Modeling Cohesion Devices for Document-Level Neural Machine Translation

COLING 2022main

Cohesion devices, e.g., reiteration, coreference, are crucial for building cohesion links across sentences. In this paper, we propose a document-level neural machine translation framework, CoDoNMT, which models cohesion devices from two perspectives: Cohesion Device Masking (CoDM) and Cohesion Atten…