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Adapting Large Language Models (LLMs) to a continuous stream of tasks is a critical yet challenging endeavor. While Parameter-Efficient Fine-Tuning (PEFT) methods have become a standard for this, they face a fundamental dilemma in continual…

机器学习 · 计算机科学 2025-11-11 Haeyong Kang

Recently, large language models (LLMs) have emerged as a groundbreaking technology and their unparalleled text generation capabilities have sparked interest in their application to the fundamental sentence representation learning task.…

计算与语言 · 计算机科学 2024-05-20 Huiming Wang , Zhaodonghui Li , Liying Cheng , Soh De Wen , Lidong Bing

Deep neural network based speech enhancement technique focuses on learning a noisy-to-clean transformation supervised by paired training data. However, the task-specific evaluation metric (e.g., PESQ) is usually non-differentiable and can…

声音 · 计算机科学 2023-02-24 Chen Chen , Yuchen Hu , Weiwei Weng , Eng Siong Chng

We introduce Entropy2Vec, a novel framework for deriving cross-lingual language representations by leveraging the entropy of monolingual language models. Unlike traditional typological inventories that suffer from feature sparsity and…

Traditionally artificial neural networks (ANNs) are trained by minimizing the cross-entropy between a provided groundtruth delta distribution (encoded as one-hot vector) and the ANN's predictive softmax distribution. It seems, however,…

计算机视觉与模式识别 · 计算机科学 2018-12-31 Pooran Singh Negi , David chan , Mohammad Mahoor

Sparse autoencoders (SAEs) are widely used for interpreting language model activations. A key evaluation metric is the increase in cross-entropy loss between the original model logits and the reconstructed model logits when replacing model…

机器学习 · 计算机科学 2025-04-01 Adam Karvonen

Cross-entropy loss is a common choice when it comes to multiclass classification tasks and language modeling in particular. Minimizing this loss results in language models of very good quality. We show that it is possible to fine-tune these…

计算与语言 · 计算机科学 2019-01-16 Vadim Popov , Mikhail Kudinov

Pre-trained Language Models (PLMs) have achieved great success on Machine Reading Comprehension (MRC) over the past few years. Although the general language representation learned from large-scale corpora does benefit MRC, the poor support…

计算与语言 · 计算机科学 2021-05-19 Fangkai Jiao , Yangyang Guo , Yilin Niu , Feng Ji , Feng-Lin Li , Liqiang Nie

Recent studies have demonstrated the overwhelming advantage of cross-lingual pre-trained models (PTMs), such as multilingual BERT and XLM, on cross-lingual NLP tasks. However, existing approaches essentially capture the co-occurrence among…

计算与语言 · 计算机科学 2021-03-23 Xiangpeng Wei , Rongxiang Weng , Yue Hu , Luxi Xing , Heng Yu , Weihua Luo

The performance of large language models (LLMs) across diverse downstream applications is fundamentally governed by the quality and composition of their pretraining corpora. Existing domain reweighting algorithms primarily optimize data…

机器学习 · 计算机科学 2025-05-28 Simin Fan , Maria Ios Glarou , Martin Jaggi

Recently, there has been a surge in the use of generated data to enhance the performance of downstream models, largely due to the advancements in pre-trained language models. However, most prevailing methods trained generative and…

计算与语言 · 计算机科学 2023-09-26 Tong Wu , Hao Wang , Zhongshen Zeng , Wei Wang , Hai-Tao Zheng , Jiaxing Zhang

Large language models (LLMs) have been garnering increasing attention in the recommendation community. Some studies have observed that LLMs, when fine-tuned by the cross-entropy (CE) loss with a full softmax, could achieve…

信息检索 · 计算机科学 2024-08-27 Cong Xu , Zhangchi Zhu , Mo Yu , Jun Wang , Jianyong Wang , Wei Zhang

Diffusion-based text-to-image models have demonstrated impressive achievements in diversity and aesthetics but struggle to generate images with legible visual texts. Existing backbone models have limitations such as misspelling, failing to…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Wenbo Li , Guohao Li , Zhibin Lan , Xue Xu , Wanru Zhuang , Jiachen Liu , Xinyan Xiao , Jinsong Su

The lack of labeled data is a major obstacle to learning high-quality sentence embeddings. Recently, self-supervised contrastive learning (SCL) is regarded as a promising way to address this problem. However, the existing works mainly rely…

计算与语言 · 计算机科学 2022-03-01 Junhan Yang , Zheng Liu , Shitao Xiao , Jianxun Lian , Lijun Wu , Defu Lian , Guangzhong Sun , Xing Xie

Existing large language model (LLM)-based embeddings typically adopt an encoder-only paradigm, treating LLMs as static feature extractors and overlooking their core generative strengths. We introduce GIRCSE (Generative Iterative Refinement…

计算与语言 · 计算机科学 2026-02-09 Yu-Che Tsai , Kuan-Yu Chen , Yuan-Chi Li , Yuan-Hao Chen , Ching-Yu Tsai , Shou-De Lin

Chinese text recognition is more challenging than Latin text due to the large amount of fine-grained Chinese characters and the great imbalance over classes, which causes a serious overfitting problem. We propose to apply Maximum Entropy…

计算机视觉与模式识别 · 计算机科学 2020-07-10 Changxu Cheng , Wuheng Xu , Xiang Bai , Bin Feng , Wenyu Liu

Non-autoregressive translation (NAT) models are typically trained with the cross-entropy loss, which forces the model outputs to be aligned verbatim with the target sentence and will highly penalize small shifts in word positions. Latent…

计算与语言 · 计算机科学 2022-10-11 Chenze Shao , Yang Feng

Machine-translated data is widely used in multilingual NLP, particularly when native text is scarce. However, translated text differs systematically from native text. This phenomenon is known as translationese, and it reflects both traces…

计算与语言 · 计算机科学 2026-02-19 Jenny Kunz

In recent years, neural machine translation (NMT) has become the dominant approach in automated translation. However, like many other deep learning approaches, NMT suffers from overfitting when the amount of training data is limited. This…

计算与语言 · 计算机科学 2019-10-01 Inigo Jauregi Unanue , Ehsan Zare Borzeshi , Massimo Piccardi

Post-training large language models with reinforcement learning is bottlenecked by the reward signal. Existing approaches require either ground-truth verifiable rewards, restricting training to domains with automatic correctness checks…

机器学习 · 计算机科学 2026-05-29 Matt Gorbett , Hossein Shirazi