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Transformers are powerful for sequence modeling. Nearly all state-of-the-art language models and pre-trained language models are based on the Transformer architecture. However, it distinguishes sequential tokens only with the token position…

计算与语言 · 计算机科学 2020-12-17 He Bai , Peng Shi , Jimmy Lin , Yuqing Xie , Luchen Tan , Kun Xiong , Wen Gao , Ming Li

Sentence embedding is an important research topic in natural language processing (NLP) since it can transfer knowledge to downstream tasks. Meanwhile, a contextualized word representation, called BERT, achieves the state-of-the-art…

计算与语言 · 计算机科学 2020-06-02 Bin Wang , C. -C. Jay Kuo

Recent studies on open-domain question answering have achieved prominent performance improvement using pre-trained language models such as BERT. State-of-the-art approaches typically follow the "retrieve and read" pipeline and employ…

计算与语言 · 计算机科学 2020-03-02 Yuyu Zhang , Ping Nie , Xiubo Geng , Arun Ramamurthy , Le Song , Daxin Jiang

Recent research on sequence labelling has been exploring different strategies to mitigate the lack of manually annotated data for the large majority of the world languages. Among others, the most successful approaches have been based on (i)…

计算与语言 · 计算机科学 2024-07-30 Anar Yeginbergen , Maite Oronoz , Rodrigo Agerri

When pre-trained on large unsupervised textual corpora, language models are able to store and retrieve factual knowledge to some extent, making it possible to use them directly for zero-shot cloze-style question answering. However, storing…

Massively multilingual sentence representation models, e.g., LASER, SBERT-distill, and LaBSE, help significantly improve cross-lingual downstream tasks. However, the use of a large amount of data or inefficient model architectures results…

计算与语言 · 计算机科学 2024-05-31 Zhuoyuan Mao , Chenhui Chu , Sadao Kurohashi

We propose a new encoder-decoder approach to learn distributed sentence representations that are applicable to multiple purposes. The model is learned by using a convolutional neural network as an encoder to map an input sentence into a…

计算与语言 · 计算机科学 2017-07-28 Zhe Gan , Yunchen Pu , Ricardo Henao , Chunyuan Li , Xiaodong He , Lawrence Carin

The zero-shot evaluation of time series foundation models (TSFMs) for classification typically uses a frozen encoder followed by a task-specific classifier. However, this practice violates the training-free premise of zero-shot deployment…

机器学习 · 计算机科学 2026-02-03 Juntao Fang , Shifeng Xie , Shengbin Nie , Yuhui Ling , Yuming Liu , Zijian Li , Keli Zhang , Lujia Pan , Themis Palpanas , Ruichu Cai

Unsupervised sentence representation learning aims to transform input sentences into fixed-length vectors enriched with intricate semantic information while obviating the reliance on labeled data. Recent strides within this domain have been…

计算与语言 · 计算机科学 2024-06-21 Bowen Zhang , Kehua Chang , Chunping Li

Sentence encoders are typically trained on language modeling tasks with large unlabeled datasets. While these encoders achieve state-of-the-art results on many sentence-level tasks, they are difficult to train with long training cycles. We…

计算与语言 · 计算机科学 2018-08-27 Viresh Ranjan , Heeyoung Kwon , Niranjan Balasubramanian , Minh Hoai

Even as pre-trained language encoders such as BERT are shared across many tasks, the output layers of question answering, text classification, and regression models are significantly different. Span decoders are frequently used for question…

计算与语言 · 计算机科学 2019-09-24 Nitish Shirish Keskar , Bryan McCann , Caiming Xiong , Richard Socher

Text classification of unseen classes is a challenging Natural Language Processing task and is mainly attempted using two different types of approaches. Similarity-based approaches attempt to classify instances based on similarities between…

计算与语言 · 计算机科学 2023-07-25 Tim Schopf , Daniel Braun , Florian Matthes

Prior research notes that BERT's computational cost grows quadratically with sequence length thus leading to longer training times, higher GPU memory constraints and carbon emissions. While recent work seeks to address these scalability…

计算与语言 · 计算机科学 2020-11-02 Yatin Chaudhary , Pankaj Gupta , Khushbu Saxena , Vivek Kulkarni , Thomas Runkler , Hinrich Schütze

Despite the impressive capabilities of Large Language Models (LLMs) in various tasks, their vulnerability to unsafe prompts remains a critical issue. These prompts can lead LLMs to generate responses on illegal or sensitive topics, posing a…

计算与语言 · 计算机科学 2024-07-10 Jinseok Kim , Jaewon Jung , Sangyeop Kim , Sohyung Park , Sungzoon Cho

Intent classification (IC) plays an important role in task-oriented dialogue systems. However, IC models often generalize poorly when training without sufficient annotated examples for each user intent. We propose a novel pre-training…

计算与语言 · 计算机科学 2023-11-15 Mujeen Sung , James Gung , Elman Mansimov , Nikolaos Pappas , Raphael Shu , Salvatore Romeo , Yi Zhang , Vittorio Castelli

Simultaneous translation, which starts translating each sentence after receiving only a few words in source sentence, has a vital role in many scenarios. Although the previous prefix-to-prefix framework is considered suitable for…

计算与语言 · 计算机科学 2022-01-03 Zhengxin Yang

Semantic segmentation models are limited in their ability to scale to large numbers of object classes. In this paper, we introduce the new task of zero-shot semantic segmentation: learning pixel-wise classifiers for never-seen object…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Maxime Bucher , Tuan-Hung Vu , Matthieu Cord , Patrick Pérez

Few-shot transfer often shows substantial gain over zero-shot transfer~\cite{lauscher2020zero}, which is a practically useful trade-off between fully supervised and unsupervised learning approaches for multilingual pretrained model-based…

计算与语言 · 计算机科学 2022-07-01 Shanu Kumar , Sandipan Dandapat , Monojit Choudhury

Multilingual contextual embeddings have demonstrated state-of-the-art performance in zero-shot cross-lingual transfer learning, where multilingual BERT is fine-tuned on one source language and evaluated on a different target language.…

计算与语言 · 计算机科学 2020-10-07 Phillip Keung , Yichao Lu , Julian Salazar , Vikas Bhardwaj

Pretrained contextual representation models (Peters et al., 2018; Devlin et al., 2018) have pushed forward the state-of-the-art on many NLP tasks. A new release of BERT (Devlin, 2018) includes a model simultaneously pretrained on 104…

计算与语言 · 计算机科学 2019-10-04 Shijie Wu , Mark Dredze